Difference between pages "G.55 serie 1" and "VL Pyörremyrsky"

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{{About
 
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| about = Italian fighter '''{{PAGENAME}}'''
 
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| usage = other versions
 
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| link = G.55 (Family)
 
−
}}
 
 
{{Specs-Card
 
{{Specs-Card
−
|code=g_55_serie1
+
|code=pyorremyrsky
 
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
 
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
−
|cockpit=Cockpit g.55 serie 1.jpg
+
|cockpit=cockpit_pyorremyrsky.jpg
 
}}
 
}}
  
 
== Description ==
 
== Description ==
 
<!-- ''In the description, the first part should be about the history of and the creation and combat usage of the aircraft, as well as its key features. In the second part, tell the reader about the aircraft in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
 
<!-- ''In the description, the first part should be about the history of and the creation and combat usage of the aircraft, as well as its key features. In the second part, tell the reader about the aircraft in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
−
The '''{{Specs|name}}''' is a rank {{Specs|rank}} Italian fighter {{Battle-rating}}. It was introduced in [[Update 1.69 "Regia Aeronautica"]].
+
From 1942, the superiority of the Red Army Air Force over the Finnish was becoming increasingly obvious. While 160 modern Messerschmitt Bf 109 G-2, G-6, and other versions were transferred to the Finnish Air Force by Germany between 1942 and 1944, the situation began to deteriorate among the Axis countries; due to the increasing successes (especially from the second half of 1943) of the Allied countries, it became obvious that further deliveries of new Bf 109s as well as spare parts for them would become more and more problematic. In this situation, the command of the Finnish Air Force ordered VL to develop a fighter that was to be made of domestic materials (mainly wood and steel), with characteristics comparable to the Bf 109 G-6. Engineers T.R. Verkola, Arvo Ilinen, and Edward Vigelius proposed an aerodynamically clean low-wing aircraft equipped with a German Daimler-Benz DB 605AC engine developing 1,475 hp (1,085 kW) and driving a three-bladed VDM propeller. In the project, the fairing of the propeller sleeve and the engine hood were borrowed from the German aircraft; this made the new Finnish aircraft, designated Pyörremyrsky (hurricane), very similar in front to the Bf 109 G.
 +
 
 +
It was introduced in [[Update 1.93 "Shark Attack"]] as a [[wt:en/news/6450-development-pyörremyrsky-the-nordic-whirlwind-en|premium pack]], but was removed from the Gaijin store after the [[wt:en/news/7674-shop-may-sale-en|2022 May sale]]. It was re-introduced as a regular in-game premium for {{GE}} in [[Update "Fire and Ice"]]. Although the Pyörremyrsky shares some design traits with the [[Bf 109 (Family)|Bf 109 series]] of German fighters, it is a completely domestic Finnish design and has significantly different flight characteristics. It has a very capable flight performance and can be considered a middle point between regular dogfighters like the Yak-3 and boom-and-zoom fighters like the Bf 109. It has a good rate of climb similar to that of the Bf 109, but its top speed and manoeuvrability are closer to that of Soviet fighters. The aircraft has a relatively small ammo pool, requiring trigger discipline to remain active throughout an entire battle. The aircraft is still outperformed by Japanese Zeros, British Spitfires, and Italian C.205s, so it is not recommended trying to dogfight these types of enemies; instead, play passively in a boom-and-zoom role and try to target slower aircraft.
  
 
== General info ==
 
== General info ==
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{{Specs-Avia-Flight}}
 
{{Specs-Avia-Flight}}
 
<!-- ''Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle.'' -->
 
<!-- ''Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle.'' -->
−
Adequate is the word that comes to mind when referring to the flight characteristics of the G.55. While not particularly good at anything, it isn't particularly bad at anything either, which makes it a solid jack-of-all-trades type plane. Overall, it is a smooth flyer that has decent acceleration, speed and climb rate while sporting a powerful triad of MG 151's which load the feared Minengeschoß round that can tear through planes like a hot knife through butter.    It excels the most in medium altitude (3-5 km) as a powerful energy-based dogfighter which can take advantage of its great engine power to defeat most allied fighters it comes across.
 
  
 
{| class="wikitable" style="text-align:center" width="70%"
 
{| class="wikitable" style="text-align:center" width="70%"
 
! rowspan="2" | Characteristics
 
! rowspan="2" | Characteristics
−
! colspan="2" | Max Speed<br>(km/h at 6,500 m)
+
! colspan="2" | Max Speed<br>(km/h at 5,000 m)
 
! rowspan="2" | Max altitude<br>(metres)
 
! rowspan="2" | Max altitude<br>(metres)
 
! colspan="2" | Turn time<br>(seconds)
 
! colspan="2" | Turn time<br>(seconds)
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|-
 
|-
 
! Stock
 
! Stock
−
| 623 || 607 || rowspan="2" | {{Specs|ceiling}} || 20.9 || 21.6 || 13.5 || 13.5 || rowspan="2" | 300
+
| 596 || 580 || rowspan="2" | {{Specs|ceiling}} || 19.0 || 19.6 || 14.3 || 14.3 || rowspan="2" | 390
 
|-
 
|-
 
! Upgraded
 
! Upgraded
−
| 670 || 646 || 19.1 || 20.0 || 20.7 || 16.7
+
| 647 || 620 || 17.1 || 18.0 || 23.9 || 18.5
 
|-
 
|-
 
|}
 
|}
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! Combat !! Take-off !! Landing !! + !! -
 
! Combat !! Take-off !! Landing !! + !! -
 
|-
 
|-
−
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || 437 || 408 || 260 || ~12 || ~6
+
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || 437 || 408 || 260 || ~14 || ~7
 
|-
 
|-
 
|}
 
|}
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! Ailerons !! Rudder !! Elevators !! Radiator
 
! Ailerons !! Rudder !! Elevators !! Radiator
 
|-
 
|-
−
| < 400 || < 420 || < 450 || > 715
+
| < 450 || < 390 || < 450 || > 715
−
|-
 
−
|}
 
−
 
 
−
{| class="wikitable" style="text-align:center"
 
−
|-
 
−
! colspan="3" | Compressor (RB/SB)
 
−
|-
 
−
! colspan="3" | Setting 1
 
−
|-
 
−
! Optimal altitude
 
−
! 100% Engine power
 
−
! WEP Engine power
 
−
|-
 
−
| 5,700 m || 1,260 hp || 1,399 hp
 
 
|-
 
|-
 
|}
 
|}
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<!-- ''Examine the survivability of the aircraft. Note how vulnerable the structure is and how secure the pilot is, whether the fuel tanks are armoured, etc. Describe the armour, if there is any, and also mention the vulnerability of other critical aircraft systems.'' -->
 
<!-- ''Examine the survivability of the aircraft. Note how vulnerable the structure is and how secure the pilot is, whether the fuel tanks are armoured, etc. Describe the armour, if there is any, and also mention the vulnerability of other critical aircraft systems.'' -->
  
−
* 8 mm Steel - Pilot's seat
+
This aircraft, having only one spar in each wing along with its water coolant system, is not a hugely durable aircraft - though it's not fragile either. The combined 20 mm of spaced armour behind the pilot is fairly effective for protection but a lack of any frontal armour makes the Pyörremyrsky very vulnerable in head-ons or in bomber hunting.
−
* 50 mm Bulletproof glass - Armored windscreen
+
 
−
* Critical components located at the front of aircraft (pilot, engine, controls)
+
* 10 mm Steel - Pilot's seat
−
* Fuel tanks located in wings
+
* 10 mm Steel - Behind pilot
−
* Fuel tank in the fuselage behind the pilot
+
* Self-sealing fuel tank (1 behind pilot)
  
 
=== Modifications and economy ===
 
=== Modifications and economy ===
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{{Specs-Avia-Offensive}}
 
{{Specs-Avia-Offensive}}
 
<!-- ''Describe the offensive armament of the aircraft, if any. Describe how effective the cannons and machine guns are in a battle, and also what belts or drums are better to use. If there is no offensive weaponry, delete this subsection.'' -->
 
<!-- ''Describe the offensive armament of the aircraft, if any. Describe how effective the cannons and machine guns are in a battle, and also what belts or drums are better to use. If there is no offensive weaponry, delete this subsection.'' -->
−
{{main|MG 151 (20 mm)|Breda-SAFAT (12.7 mm)}}
+
{{main|MG 151 (20 mm)|LKk/42 (12.7 mm)}}
  
 
The '''''{{PAGENAME}}''''' is armed with:
 
The '''''{{PAGENAME}}''''' is armed with:
  
−
* 1 x 20 mm MG 151 cannons, nose-mounted (250 rpg)
+
* 1 x 20 mm MG 151 cannon, nose-mounted (150 rpg)
−
* 2 x 20 mm MG 151 cannons, wing-mounted (200 rpg = 400 total)
+
* 2 x 12.7 mm LKk/42 machine guns, nose-mounted (300 rpg = 600 total)
−
* 2 x 12.7 mm Breda-SAFAT machine guns, nose-mounted (300 rpg = 600 total)
 
−
 
 
−
The two cannons are mounted in each wing. A single 20 mm cannon is mounted in the nose of the aircraft, firing through the propeller hub. The two machine guns are nose-mounted, positioned between the pilot and the engine of the aircraft. If fired continuously, the wing-mounted cannons will run out of ammunition before the nose-mounted cannon.
 
−
 
 
−
Do not use the Breda HMG's as a source of damage, as they have very poor ballistics beyond 300 meters. The pilot should use them as scouting weapons in order to line-up shots for the MG 151's to save ammunition, which isn't necessarily needed as the 151's have a large pool of ammunition, but it does help when trying to play more conservatively.
 
  
 
=== Suspended armament ===
 
=== Suspended armament ===
 
{{Specs-Avia-Suspended}}
 
{{Specs-Avia-Suspended}}
 
<!-- ''Describe the aircraft's suspended armament: additional cannons under the wings, bombs, rockets and torpedoes. This section is especially important for bombers and attackers. If there is no suspended weaponry remove this subsection.'' -->
 
<!-- ''Describe the aircraft's suspended armament: additional cannons under the wings, bombs, rockets and torpedoes. This section is especially important for bombers and attackers. If there is no suspended weaponry remove this subsection.'' -->
−
{{main|GP 50 (50 kg)|GP 100 (100 kg)}}
+
{{main|Model 1938 (50 kg)|Model 1938 (100 kg)}}
  
 
The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:
 
The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:
  
 
* Without load
 
* Without load
−
* 2 x 50 kg GP 50 bombs (100 kg total)
+
* 4 x 50 kg Model 1938 bombs (200 kg total)
−
* 2 x 100 kg GP 100 bombs (200 kg total)
+
* 4 x 100 kg Model 1938 bombs (400 kg total)
  
 
== Usage in battles ==
 
== Usage in battles ==
−
<!-- ''Describe the tactics of playing in the aircraft, the features of using aircraft in a team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view, but instead, give the reader food for thought. Examine the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).'' -->
+
<!-- ''Describe the tactics of playing in the aircraft, the features of using aircraft in a team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view, but instead, give the reader food for thought. Examine the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).'' -->This 1945 aircraft is not a great fighter to low-level pursuits where really great top speed is crucial. But instead, use this plane for medium-altitude engagements. Where an altitude advantage allows the Pyörremyrsky to increase the speed and surprise its enemies with a proper turn rate. This aircraft excels in both boom 'n' zoom but is also an excellent dogfighter, sporting fantastic low speed handling characteristics (especially with combat and takeoff flaps), a steady gun platform and, as previously mentioned, a fairly tight turning circle.
−
The G.55's main strong points come down to its engine power, its light construction and its wing profile, which grant it a high sustained rate of climb, a tight turning circle and the power output to endure sustained horizontal manoeuvring. It performs best up to medium altitudes around 5,000 m (16,404 feet), after which it is generally outperformed by its competition. unfortunately, its light construction and its wing profile mean that when the "Centauro" goes into the vertical, it bleeds speed very easily. Its top speed in a dive is unimpressive and it can barely catch up in a zoom climb with its competitors. The armament is very effective as well, however, the MG 151 is not very accurate at range, which should be taken into account when engaging in head-on passes.
 
  
−
You should primarily enforce an energy fighting flying style to take advantage of the aircraft's descent energy retention and solid manoeuvrability, and also to try to cover the Centauro's weakness of mediocre speed. Try to stay above your enemy, but take care to recognize the threat your attacker poses by observing the plane they are flying.
+
The Pyörremyrsky climbs very well and maintains adequate speed up to approximately 5,000 m, this is more than enough speed to initiate combat actions, albeit Finnish pilots can continue the climb to allow themselves more combat choices. Oppositely, they can remain below the 5,000 m and work together with their Swedish brothers to down all the enemy team; the Pyörremyrsky often acting as the decoy. The engine power is favourable, and under WEP produces over 1,400HP which the Pyörremyrsky can maintain almost indefinitely with proper radiator and oil radiator management.
  
−
'''Specific enemies worth noting'''
+
The intercepting role varies somewhat nonetheless. Pyörremyrsky does not offer great frontal protection, so engaging bombers with good turret protection is not the best idea. Specially bombers like the mighty Soviet [[Pe-8]] or the German [[He 219 A-7]] which are loaded with high-calibre weapons able to harm your pilot with a direct shot or break the light Pyörremyrsky apart. The rather reserved ammo count also limits the input damage against bombers. Because of that same reason, head-on attacks are ill-advised, only should be attempted versus planes with a good turn rate and light airframe. Usually the Japanese [[A6M3|Zeros]], The British [[Spitfire (Family)|Spitfires]] or the Italian [[C.205 (Family)|C.205s]]. Though, there are exceptions where the player must know how to engage a specific enemy. When to dive away or when to engage in a turning duel.
  
−
* [[Spitfire F Mk IX]] and [[Spitfire F Mk XIVe]] - These two Spitfire's are some of the most common enemies you will face, and accordingly, some of the most dangerous. The Mk IX has decent speed, amazing climb rate and a turn rate that'll embarrass zeroes, and the XIVe has excellent speed and acceleration, great energy retention and solid performance at high altitude. You should never engage a Spitfire in a turn-fight, so focus on Boom-&-Zoom to use your powerful armament to shred through their weak airframes.
+
=== Ground Battles ===
−
* [[P-51D-30]] - The P-51D-30 is another enemy you should take note of. It is arguably one of the best aircraft at this battle rating thanks to its excellent speed, great climb rate, relatively powerful armament and solid high-speed manoeuvrability due to its Laminar flow wings. The Packard V-1650 is basically a Merlin engine tuned for high altitude, and it can propel the D-30 to speeds the G.55 can only dream of. However, the D-30 has extremely poor manoeuvrability at low speeds due to the same Laminar flow wings that allow it to turn well at high speeds, so if you cannot engage one with an energy advantage you can turn-fight it.
+
The Pyörremyrsky is not the fastest plane in here. Therefore players need to consider 2 main roles if they seek good rewards in the Pyörremyrsky flying over the tank's battlefield.
−
* [[Yak-3P]] - The feared red Russian menace is an extremely dangerous opponent that can engage you on a more than even footing. It turns extremely well and has a solid climb rate while also sporting a relatively powerful set of 3 B-20 cannons, but its performance suffers above 3,000 m where its already mediocre speed becomes crippling. As long as you take care to not turn fight one and engage it above 4,000 m, it is not a threat.
+
 
−
* Late [[Bf 109 (Family)|Bf 109]] models (G2/trop-G6) - While you cannot face one in realistic battles, arcade battles pose this threat. The G-2 and G-6 outclass you in every way, shape and form. Under no circumstances are you to engage these opponents, and if one forces a fight on you, seek assistance from teammates.
+
'''Air Superiority role'''
 +
 
 +
In this role the Pyörremyrsky will take no bombs and instead climb over the battlefield, diving down and taking attacks of opportunity against enemy aircraft. The aircraft excels in this role as it preserves energy well and even if lured into a low level dogfight, will still be in home turf if in the hands of a skilled pilot.
 +
 
 +
Generally, the target planes are attackers with low top speed or fighters with bombs, so the Pyörremyrsky should have no trouble downing them with a surprise advantage.
 +
 
 +
'''Close air support'''
 +
 
 +
Here the Pyörremyrsky performs as a light strike fighter armed with the 4 x 100 kg bombs. This bomb load for a single engined fighter is very good and lends the Pyörremyrsky a fantastic multi-role capability. The bombs can inflict some serious damage and then the aircraft can serve to preserve air superiority over the battle.
 +
 
 +
Crew exposed vehicles or light tanks can also be destroyed with the heavy machine guns or cannons, both of which have good AP belts and can inflict some damage to armoured vehicles from a top-down approach.
  
 
=== Manual Engine Control ===
 
=== Manual Engine Control ===
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! Oil !! Water !! Type
 
! Oil !! Water !! Type
 
|-
 
|-
−
| Not controllable || Controllable<br>Not auto controlled || Controllable<br>Auto control available || Controllable<br>Auto control available || Separate || Not controllable<br>1 gear || Not controllable
+
| Not controllable || Controllable<br>Auto control available || Controllable<br>Auto control available || Controllable<br>Auto control available || Separate || Not controllable<br>1 gear || Not controllable
 
|-
 
|-
 
|}
 
|}
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'''Pros:'''
 
'''Pros:'''
  
−
* Good climb rate
+
* Good armament, MG 151/20 and two 12.7 mm LKk/42 both nose mounted
−
* Exceptional low and mid-altitude performance
+
* The LKk/42 MGs can load entirely AP ammunition that can penetrate 26 mm of armour
−
* Relatively robust airframe
+
* Good turn rate, can outturn some Merlin Spitfires in sustained turnfight
−
* Good turn and roll rate
+
* Decent flaps allow for decreased turn radius
−
* Effective armament with a large ammunition pool
+
* Fantastic engine characteristics (overheating can be negated entirely)
−
* Multi-role fighter which can carry bombs
+
* Very steady and reliable gun platform
  
 
'''Cons:'''
 
'''Cons:'''
  
−
* Lack of armour means the pilot is more prone to being knocked out in a head-on pass
+
* Not hugely fast, Bf 109 series starting F-4 outrun it
−
* Engine overheats quickly on WEP without manual engine control
+
* No frontal armour protection
−
* Roll and yaw are limited at high speeds
+
* Not best suited to bomber hunting
−
* Metal beams on canopy window obstruct the first-person view
 
−
* Mediocre top speed
 
  
 
== History ==
 
== History ==
 
<!-- ''Describe the history of the creation and combat usage of the aircraft in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under <code><nowiki>=== In-game description ===</nowiki></code>, also if applicable).'' -->
 
<!-- ''Describe the history of the creation and combat usage of the aircraft in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under <code><nowiki>=== In-game description ===</nowiki></code>, also if applicable).'' -->
−
The Fiat G.55 serie 1 (G.55/1) was the first production aircraft series of the Fiat G.55 family. The aircraft's origins can be traced to a variant of the Fiat G.50, to be powered by a new Fiat RA.1050 inline engine (a license-built variant of the DB-605). The first G.55 prototype flew on 30 April 1942, immediately exhibiting its great flight performance and handling characteristics. Though initially equipped with a 20 mm MG151/20 cannon and four Breda SAFAT machine guns, the design was revised to include two additional cannons replacing two of the wing-mounted machine guns. This armament scheme became the standard for G.55/1 aircraft, though some had field-modified wing machine guns instead of the cannons.
 
  
−
The aircraft was test flown against its rivals, the C.205 and Re.2005. Of the three, the G.55 exhibited the second best characteristics. As a result, it and the C.205 were both ordered into mass production, with 1,800 G.55 aircraft ordered. The first 34 pre-production aircraft were completed identical to the prototype, and later modified to serie 1 standard, with underwing racks for a single 50 kg or 100 kg bomb. The aircraft's strong high-altitude performance and adequate armament made it well-suited for the bomber interception role it was meant to fulfil, as the Italians intended it to be used against American heavy bombers such as the B-17 and B-24.
+
Pyörremyrsky, meaning hurricane, tornado or whirlwind in Finnish (pyörre > vortex/whirl, myrsky > storm), was the name of a Finnish fighter design at the end of WWII. Designed by Torsti Rafael Verkkola (1909-1977), the chief designer of Valtion lentokonetehdas (VL or "State Aircraft Factory") and the designer of the previous Myrsky fighter and the Pyry trainer, the Pyörremyrsky was conceived as a domestic equivalent to the Messerschmitt Bf 109G.
  
−
The first G.55/1 aircraft began deliveries in summer of 1943, and soon began flying sorties against American bombers. However, the aircraft's complicated construction process meant that only 35 aircraft had been delivered before the Italian Armistice in September of that year. However, several G.55/1s went on to serve with the Northern Italian air force, still loyal to the Nazis. These aircraft served until late 1944, when they were replaced by later variants of the Bf 109.
+
=== Design ===
 +
Conceptually, the Pyörremyrsky was very similar to the Bf 109G: it was powered by the same Daimler Benz DB605 engine and had a similar armament, consisting of one hub-mounted 20 mm MG 151/20 cannon and two 12.7 mm hood-mounted machine guns. However, the design was optimized for domestic production, making maximum use of wooden sub-assemblies, and crucially, unlike the Bf 109, it used a wing-mounted landing gear with a wide ground track, giving the design better handling on the ground.
  
−
In early 1942, the German and Italian air forces exchanged officers for visits to their respective aircraft production lines, to investigate ways to standardize axis aircraft production. In particular, the Germans were interested in the G.55 and its counterparts - so interested that it attracted the attention of Hermann Göring. After various flight tests, the German Air Ministry decided that the G.55 was an excellent fighter and started setting up a production line in Germany as well. As a result, various G.55 variants were produced in Germany. However, due to the relatively short production run before the Armistice, only 35 G.55/1 aircraft were built.
+
=== Testing ===
 +
Design and construction of the Pyörremyrsky met significant delays, and while the original tender called for a prototype to be ready in May 1944, it wasn't until 21 November 1945 that the prototype was ready and made its first flight.
 +
 
 +
The prototype was designated PM-1. PM being its intended type designation and 1 being its airframe number. The designation PM is an abbreviation of '''P'''yörre'''m'''yrsky.
 +
 
 +
Flight trials of the Pyörremyrsky revealed some minor issues, but other than that, the design was very promising. Performance of the Pyörremyrsky was very similar to that of the Bf 109G, but it had a superior climbing speed and proved to be very agile. One major worry, however, was the quality of the glue used to bind the wooden components.
 +
 
 +
=== Fate ===
 +
The end of the War saw Finland's military subjected to severe restrictions under the Moscow Armistice, which also called for a reduction of its forces. This limited the air force to only 60 fighter aircraft. As a result, the Pyörremyrsky became surplus before it even reached production as Finland chose to retain the Messerschmitt Bf 109 G as its primary fighter for economical reasons. The last of the Finnish Bf 109 Gs bowed out of service on March 13th 1954. The sole completed prototype of the Pyörremyrsky was put into storage after its last flight on July 22nd 1947, and stricken from the Finnish Air Force's inventory on April 1st 1953. Fortunately the prototype was preserved: it is now displayed at the Aviation Museum of Central Finland in Tikkakoski.
 +
 
 +
=== Legacy ===
 +
Fortunately the Pyörremyrsky legacy continued even after the prototype was grounded. In 1948, construction started on a replacement of the VL Pyry trainer. The new design reused the wing design of the Pyörremyrsky in combination with a new fuselage. This aircraft, which was constructed by the successor of VL, Valmet, was named Vihuri (Gale) and first flew on February 6th 1951. The Vihuri prototype was designated VH-1, VH being an abbreviation of '''V'''i'''h'''uri.
 +
 
 +
After successful tests the Finnish air force ordered 30 aircraft on 27 February 1951. These were collectively called Vihuri sarja (series) II and carried the numbers VH-2 to VH-31. Series II were entered service in 1953 and this prompted the Finnish air force to order yet another 20 aircraft by autumn 1954. These aircraft were collectively called Vihuri series III and carried the numbers VH-32 to VH-51. All of series III were handed over to the Finnish air force on 15 January 1957.
 +
 
 +
Unlike the Pyörremyrsky the Vihuri was entirely constructed from metal. As a trainer it was a sound design, however it suffered badly in the engine department. The Vihuri design used old Tampere (Bristol) Mercury engines which had been recuperated from scrapped Bristol Blenheim bombers. These engines were already worn out by the time they were installed on the trainers which lead to a lot of breakdowns. After a string of fatal accidents the design was placed under severe suspicion and in March of 1957 all the Vihuri's were grounded after an accident was caused by structural failure. A subsequent inquest showed this particular accident as well as most of the previous ones were caused by pilots violating the flight safety regulations, taking the aircraft beyond its structural limitations. The Vihuri was returned to service in May of 1957, but following two further fatal accidents in 1959 the type was permanently grounded and stricken from the Finnish Air Force's inventory, with 31 out of 32 surviving airframes being sold for scrap; ironically it was outlasted in service by the Pyry (withdrawing in 1962), the design it was supposed to replace as a trainer. The sole surviving complete Vihuri is now displayed next to the sole surviving Pyörremyrsky at the Tikkakoski air force museum.
  
 
== Media ==
 
== Media ==
Line 194: Line 193:
 
;Skins
 
;Skins
  
−
* [https://live.warthunder.com/feed/camouflages/?vehicle=g_55_serie1 Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]
+
* [https://live.warthunder.com/feed/camouflages/?vehicle=pyorremyrsky Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]
  
−
[[File:G.55 serie 1 Francesca Lucchini.mp4|thumb|"Francesca Lucchini" collaboration camouflage|none]]
+
;Images
 +
<gallery mode="packed" heights="150px">
 +
File:Pyorremyrsky WTWallpaper 001.jpg
 +
File:Pyorremyrsky WTWallpaper 002.jpg
 +
File:Pyorremyrsky WTWallpaper 003.jpg
 +
File:Pyorremyrsky WTWallpaper 004.jpg
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;Videos
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{{Youtube-gallery|u_HsKH1DYlc|'''Premium Vehicles: VL Pyörremyrsky''' - ''War Thunder Wiki''|ZPGPaceu1oI|'''Pyörremyrsky "One Hard Hitting Finn!"''' - ''Bo Time Gaming''|AKxlwtWIlSI|'''The Shooting Range #173''' - ''Pages of History'' section at 03:47 discusses the Pyörremyrsky.
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== See also ==
 
== See also ==
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;Aircraft of comparable role, configuration and era
 
;Aircraft of comparable role, configuration and era
  
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* [[Bf 109 G-2/trop]]
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* Yakovlev [[Yak-9 (Family)|Yak-9]]
−
* [[Bf 109 G-6]]
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* Macchi [[C.205 (Family)|C.205]]
−
* [[Ki-61-I hei]]
+
* Fiat [[G.55 (Family)|G.55]]
−
* [[C.205N2]]
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* Reggiane [[Re.2005 serie 0|Re.2005]]
−
* {{Specs-Link|bf-109g-6_finland}}
 
  
 
== External links ==
 
== External links ==
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* ''other literature.'' -->
 
* ''other literature.'' -->
  
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* [[wt:en/news/4812-vehicle-profile-fiat-g-55-serie-1-en|[Vehicle Profile] Fiat G.55 serie 1]]
+
* [[wt:en/news/6448-development-py%C3%B6rremyrsky-the-nordic-whirlwind-en|[Development] Pyörremyrsky: The Nordic Whirlwind]]
−
* [https://forum.warthunder.com/index.php?/topic/364974-fiat-g55-serie-i-centauro/ Official data sheet - more details about the performance]
+
* [[wikipedia:VL_Pyörremyrsky|[Wikipedia] VL Pyörremyrsky]]
 +
* [https://forum.warthunder.com/index.php?/topic/474725-pyorremyrsky/ Official data sheet - more details about the performance]
  
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{{AirManufacturer Fiat}}
+
{{AirManufacturer VL}}
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{{Italy fighters}}
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{{Sweden fighters}}
 +
{{Sweden premium aircraft}}

Latest revision as of 12:20, 26 July 2024

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VL Pyörremyrsky
pyorremyrsky.png
GarageImage VL Pyörremyrsky.jpg
360://https://old-wiki.warthunder.com/images/c/c7/Cockpit_pyorremyrsky.jpg
VL Pyörremyrsky

Description

From 1942, the superiority of the Red Army Air Force over the Finnish was becoming increasingly obvious. While 160 modern Messerschmitt Bf 109 G-2, G-6, and other versions were transferred to the Finnish Air Force by Germany between 1942 and 1944, the situation began to deteriorate among the Axis countries; due to the increasing successes (especially from the second half of 1943) of the Allied countries, it became obvious that further deliveries of new Bf 109s as well as spare parts for them would become more and more problematic. In this situation, the command of the Finnish Air Force ordered VL to develop a fighter that was to be made of domestic materials (mainly wood and steel), with characteristics comparable to the Bf 109 G-6. Engineers T.R. Verkola, Arvo Ilinen, and Edward Vigelius proposed an aerodynamically clean low-wing aircraft equipped with a German Daimler-Benz DB 605AC engine developing 1,475 hp (1,085 kW) and driving a three-bladed VDM propeller. In the project, the fairing of the propeller sleeve and the engine hood were borrowed from the German aircraft; this made the new Finnish aircraft, designated Pyörremyrsky (hurricane), very similar in front to the Bf 109 G.

It was introduced in Update 1.93 "Shark Attack" as a premium pack, but was removed from the Gaijin store after the 2022 May sale. It was re-introduced as a regular in-game premium for Ge icon.png in Update "Fire and Ice". Although the Pyörremyrsky shares some design traits with the Bf 109 series of German fighters, it is a completely domestic Finnish design and has significantly different flight characteristics. It has a very capable flight performance and can be considered a middle point between regular dogfighters like the Yak-3 and boom-and-zoom fighters like the Bf 109. It has a good rate of climb similar to that of the Bf 109, but its top speed and manoeuvrability are closer to that of Soviet fighters. The aircraft has a relatively small ammo pool, requiring trigger discipline to remain active throughout an entire battle. The aircraft is still outperformed by Japanese Zeros, British Spitfires, and Italian C.205s, so it is not recommended trying to dogfight these types of enemies; instead, play passively in a boom-and-zoom role and try to target slower aircraft.

General info

Flight performance

Characteristics Max Speed
(km/h at 5,000 m) 		Max altitude
(metres) 		Turn time
(seconds) 		Rate of climb
(metres/second) 		Take-off run
(metres)
AB RB AB RB AB RB
Stock 596 580 19.0 19.6 14.3 14.3 390
Upgraded 647 620 17.1 18.0 23.9 18.5

Details

Features
Combat flaps Take-off flaps Landing flaps Air brakes Arrestor gear
✓ ✓ ✓ X X
Limits
Wings (km/h) Gear (km/h) Flaps (km/h) Max Static G
Combat Take-off Landing + -
437 408 260 ~14 ~7
Optimal velocities (km/h)
Ailerons Rudder Elevators Radiator
< 450 < 390 < 450 > 715

Survivability and armour

This aircraft, having only one spar in each wing along with its water coolant system, is not a hugely durable aircraft - though it's not fragile either. The combined 20 mm of spaced armour behind the pilot is fairly effective for protection but a lack of any frontal armour makes the Pyörremyrsky very vulnerable in head-ons or in bomber hunting.

  • 10 mm Steel - Pilot's seat
  • 10 mm Steel - Behind pilot
  • Self-sealing fuel tank (1 behind pilot)

Modifications and economy

Armaments

Offensive armament

Main articles: MG 151 (20 mm), LKk/42 (12.7 mm)

The VL Pyörremyrsky is armed with:

  • 1 x 20 mm MG 151 cannon, nose-mounted (150 rpg)
  • 2 x 12.7 mm LKk/42 machine guns, nose-mounted (300 rpg = 600 total)

Suspended armament

Main articles: Model 1938 (50 kg), Model 1938 (100 kg)

The VL Pyörremyrsky can be outfitted with the following ordnance:

  • Without load
  • 4 x 50 kg Model 1938 bombs (200 kg total)
  • 4 x 100 kg Model 1938 bombs (400 kg total)

Usage in battles

This 1945 aircraft is not a great fighter to low-level pursuits where really great top speed is crucial. But instead, use this plane for medium-altitude engagements. Where an altitude advantage allows the Pyörremyrsky to increase the speed and surprise its enemies with a proper turn rate. This aircraft excels in both boom 'n' zoom but is also an excellent dogfighter, sporting fantastic low speed handling characteristics (especially with combat and takeoff flaps), a steady gun platform and, as previously mentioned, a fairly tight turning circle.

The Pyörremyrsky climbs very well and maintains adequate speed up to approximately 5,000 m, this is more than enough speed to initiate combat actions, albeit Finnish pilots can continue the climb to allow themselves more combat choices. Oppositely, they can remain below the 5,000 m and work together with their Swedish brothers to down all the enemy team; the Pyörremyrsky often acting as the decoy. The engine power is favourable, and under WEP produces over 1,400HP which the Pyörremyrsky can maintain almost indefinitely with proper radiator and oil radiator management.

The intercepting role varies somewhat nonetheless. Pyörremyrsky does not offer great frontal protection, so engaging bombers with good turret protection is not the best idea. Specially bombers like the mighty Soviet Pe-8 or the German He 219 A-7 which are loaded with high-calibre weapons able to harm your pilot with a direct shot or break the light Pyörremyrsky apart. The rather reserved ammo count also limits the input damage against bombers. Because of that same reason, head-on attacks are ill-advised, only should be attempted versus planes with a good turn rate and light airframe. Usually the Japanese Zeros, The British Spitfires or the Italian C.205s. Though, there are exceptions where the player must know how to engage a specific enemy. When to dive away or when to engage in a turning duel.

Ground Battles

The Pyörremyrsky is not the fastest plane in here. Therefore players need to consider 2 main roles if they seek good rewards in the Pyörremyrsky flying over the tank's battlefield.

Air Superiority role

In this role the Pyörremyrsky will take no bombs and instead climb over the battlefield, diving down and taking attacks of opportunity against enemy aircraft. The aircraft excels in this role as it preserves energy well and even if lured into a low level dogfight, will still be in home turf if in the hands of a skilled pilot.

Generally, the target planes are attackers with low top speed or fighters with bombs, so the Pyörremyrsky should have no trouble downing them with a surprise advantage.

Close air support

Here the Pyörremyrsky performs as a light strike fighter armed with the 4 x 100 kg bombs. This bomb load for a single engined fighter is very good and lends the Pyörremyrsky a fantastic multi-role capability. The bombs can inflict some serious damage and then the aircraft can serve to preserve air superiority over the battle.

Crew exposed vehicles or light tanks can also be destroyed with the heavy machine guns or cannons, both of which have good AP belts and can inflict some damage to armoured vehicles from a top-down approach.

Manual Engine Control

MEC elements
Mixer Pitch Radiator Supercharger Turbocharger
Oil Water Type
Not controllable Controllable
Auto control available 		Controllable
Auto control available 		Controllable
Auto control available 		Separate Not controllable
1 gear 		Not controllable

Pros and cons

Pros:

  • Good armament, MG 151/20 and two 12.7 mm LKk/42 both nose mounted
  • The LKk/42 MGs can load entirely AP ammunition that can penetrate 26 mm of armour
  • Good turn rate, can outturn some Merlin Spitfires in sustained turnfight
  • Decent flaps allow for decreased turn radius
  • Fantastic engine characteristics (overheating can be negated entirely)
  • Very steady and reliable gun platform

Cons:

  • Not hugely fast, Bf 109 series starting F-4 outrun it
  • No frontal armour protection
  • Not best suited to bomber hunting

History

Pyörremyrsky, meaning hurricane, tornado or whirlwind in Finnish (pyörre > vortex/whirl, myrsky > storm), was the name of a Finnish fighter design at the end of WWII. Designed by Torsti Rafael Verkkola (1909-1977), the chief designer of Valtion lentokonetehdas (VL or "State Aircraft Factory") and the designer of the previous Myrsky fighter and the Pyry trainer, the Pyörremyrsky was conceived as a domestic equivalent to the Messerschmitt Bf 109G.

Design

Conceptually, the Pyörremyrsky was very similar to the Bf 109G: it was powered by the same Daimler Benz DB605 engine and had a similar armament, consisting of one hub-mounted 20 mm MG 151/20 cannon and two 12.7 mm hood-mounted machine guns. However, the design was optimized for domestic production, making maximum use of wooden sub-assemblies, and crucially, unlike the Bf 109, it used a wing-mounted landing gear with a wide ground track, giving the design better handling on the ground.

Testing

Design and construction of the Pyörremyrsky met significant delays, and while the original tender called for a prototype to be ready in May 1944, it wasn't until 21 November 1945 that the prototype was ready and made its first flight.

The prototype was designated PM-1. PM being its intended type designation and 1 being its airframe number. The designation PM is an abbreviation of Pyörremyrsky.

Flight trials of the Pyörremyrsky revealed some minor issues, but other than that, the design was very promising. Performance of the Pyörremyrsky was very similar to that of the Bf 109G, but it had a superior climbing speed and proved to be very agile. One major worry, however, was the quality of the glue used to bind the wooden components.

Fate

The end of the War saw Finland's military subjected to severe restrictions under the Moscow Armistice, which also called for a reduction of its forces. This limited the air force to only 60 fighter aircraft. As a result, the Pyörremyrsky became surplus before it even reached production as Finland chose to retain the Messerschmitt Bf 109 G as its primary fighter for economical reasons. The last of the Finnish Bf 109 Gs bowed out of service on March 13th 1954. The sole completed prototype of the Pyörremyrsky was put into storage after its last flight on July 22nd 1947, and stricken from the Finnish Air Force's inventory on April 1st 1953. Fortunately the prototype was preserved: it is now displayed at the Aviation Museum of Central Finland in Tikkakoski.

Legacy

Fortunately the Pyörremyrsky legacy continued even after the prototype was grounded. In 1948, construction started on a replacement of the VL Pyry trainer. The new design reused the wing design of the Pyörremyrsky in combination with a new fuselage. This aircraft, which was constructed by the successor of VL, Valmet, was named Vihuri (Gale) and first flew on February 6th 1951. The Vihuri prototype was designated VH-1, VH being an abbreviation of Vihuri.

After successful tests the Finnish air force ordered 30 aircraft on 27 February 1951. These were collectively called Vihuri sarja (series) II and carried the numbers VH-2 to VH-31. Series II were entered service in 1953 and this prompted the Finnish air force to order yet another 20 aircraft by autumn 1954. These aircraft were collectively called Vihuri series III and carried the numbers VH-32 to VH-51. All of series III were handed over to the Finnish air force on 15 January 1957.

Unlike the Pyörremyrsky the Vihuri was entirely constructed from metal. As a trainer it was a sound design, however it suffered badly in the engine department. The Vihuri design used old Tampere (Bristol) Mercury engines which had been recuperated from scrapped Bristol Blenheim bombers. These engines were already worn out by the time they were installed on the trainers which lead to a lot of breakdowns. After a string of fatal accidents the design was placed under severe suspicion and in March of 1957 all the Vihuri's were grounded after an accident was caused by structural failure. A subsequent inquest showed this particular accident as well as most of the previous ones were caused by pilots violating the flight safety regulations, taking the aircraft beyond its structural limitations. The Vihuri was returned to service in May of 1957, but following two further fatal accidents in 1959 the type was permanently grounded and stricken from the Finnish Air Force's inventory, with 31 out of 32 surviving airframes being sold for scrap; ironically it was outlasted in service by the Pyry (withdrawing in 1962), the design it was supposed to replace as a trainer. The sole surviving complete Vihuri is now displayed next to the sole surviving Pyörremyrsky at the Tikkakoski air force museum.

Media

Skins
Images
  • Pyorremyrsky WTWallpaper 001.jpg
  • Pyorremyrsky WTWallpaper 002.jpg
  • Pyorremyrsky WTWallpaper 003.jpg
  • Pyorremyrsky WTWallpaper 004.jpg
  • Pyorremyrsky WTWallpaper 005.jpg
  • Pyorremyrsky WTWallpaper 006.jpg
  • Pyorremyrsky WTWallpaper 007.jpg
Videos
Premium Vehicles: VL Pyörremyrsky - War Thunder Wiki
Pyörremyrsky "One Hard Hitting Finn!" - Bo Time Gaming
The Shooting Range #173 - Pages of History section at 03:47 discusses the Pyörremyrsky.

See also

Aircraft of comparable role, configuration and era

External links


Finnish State Aircraft Factory (Valtion Lentokonetehdas)
Fighters  Mörkö-Morane* · VL Myrsky II · VL Pyörremyrsky
  ▄Fokker D.XXI-3* · ▄Fokker D.XXI*
  * Licensed Production / Variants
See Also  Morane-Saulnier · Fokker

Sweden fighters
ASJA  J6B
Saab  J21A-1 · J21A-2 · A21A-3
FFVS  J22-A · J22-B
Foreign Import  J8A · Iacobi's J8A · J9 Early · J11 · J20 · J26 David · J26
Finland 
VL  Mörkö-Morane · VL Myrsky II · VL Pyörremyrsky
(NL) Fokker  ▄Fokker D.XXI-3 · ▄Fokker D.XXI
(DE) Messerschmitt  ▄Bf 109 G-2 · ▄Bf 109 G-6 Erla · ▄Bf 109 G-6
Other  ▄B-239 · ▄Hurricane Mk I/L

Sweden premium aircraft
Fighters  Iacobi's J8A · ▄Fokker D.XXI · Mörkö-Morane · VL Myrsky II · J9 Early · J26 David · VL Pyörremyrsky · ▄Bf 109 G-6
Jet fighters  J29D · J35A · Saab J35XS · JA37DI F21
Strike aircraft  SAAB-105OE · A32A Röd Adam
Bomber  ▄Ar 196 A-5

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