F-89D

F-89D

F-89B

F-89D

F-89B

USA

V Rank

Battle rating:

AB	RB	SB
6.7	7.0	7.3

Class:

PREMIUM

Fighter

Jet fighter

Purchase:Bundle or Gift

This page is about the American jet fighter F-89D. For other version, see F-89B.

Description

The F-89D is a premium rank V American jet fighter with a battle rating of 6.7 (AB), 7.0 (RB), and 7.3 (SB). It was introduced in Update 1.91 "Night Vision".

The F-89D Scorpion was designed and built to be an all-weather interceptor intended to neutralize any potential invading Soviet bomber force. The USAAF was intent of replacing the P-61 Black Widow with another night fighter, one specifically which would fly faster (minimum 530 mph/850 kph) almost assuredly requiring the usage of jets, six sixty-calibre machine guns or 20 mm autocannons and armed with internally stored aerial rockets. To round out the aircraft for ground attack if needed, it would also need to accommodate 1,000 lb bombs and eight larger rocket types externally. Initial wind tunnel testing of the fighter determined that the proposed swept-wings were insufficient at slow speeds and were changed out with straight wings. Though causing a loss of high-end performance, increased stability at low speeds was necessary.

Other changes to the horizontal stabilizer also increased the effectiveness of the elevators and rudder. Concerns about the fuel tanks situated right over the engines were nullified when it was determined that efforts made by Northrop to protect them were considered sufficient, anything else would have required a complete redesign of the aircraft.

Other key features of the Scorpion was the usage of decelerons or clamshell-style split ailerons which work as a standard aileron, however, can open up as a dive brake or be utilized as a takeoff/landing flap. Last-minute changes by the Air Force required upgrading the engines and outfitting an afterburner, adding a radar system, fire control system, permanent wingtip fuel tanks, reconfigured nose guns and easy access to lower the entire engine to make for easier maintenance.

Having determined that the six autocannons originally specced with the F-89A and B models would be less effective against bomber formations as it requires relative precision to damage or destroy the enemy bombers. On the other hand, a new requirement for the F-89 to house 104 Folding-Fin Mighty Mouse Aerial Rockets and underwing HVAR rockets would allow the F-89 (now designated as the F-89D) the ability to launch salvos of rockets and quickly targeting another bomber to launch more and allow for the potential of one or more rockets in the salvo to accomplish the required amount of damage necessary to destroy them or cause them to turn around and retreat. Though unguided and not terribly accurate, a salvo of rockets typically allowed for one or two rockets to explode near enough to be a successful hit.

To aid in the aerodynamics of the rocket launchers, they were outfitted around the wing-tip fuel tanks. Engineered so that the launching rockets would not damage the fuel tanks, the underwing still allowed for the mounting of the larger HVAR rockets to be used against bombers, but also along with the FFAR rockets be used against ground targets. The F-89D though best used with higher speeds, can be used as a dive-bomber of sorts, when going against ground targets, the fighter should throttle back, extend dive brakes, line up the shot and fire the rockets. Immediately when finished firing, retract the brakes and full-throttle the engines to gain speed and distance from any enemy fighters which may have targeted you.

General info

Flight performance

Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle.

Characteristics
Stock
Max Speed (km/h at ??,??? m)		Max altitude (meters)	Turn time (seconds)		Rate of climb (meters/second)		Take-off run (meters)
AB	RB		AB	RB	AB	RB
????	????	14996	??.?	??.?	??.?	??.?	????
Upgraded
Max Speed (km/h at ??,??? m)		Max altitude (meters)	Turn time (seconds)		Rate of climb (meters/second)		Take-off run (meters)
AB	RB		AB	RB	AB	RB
????	????	14996	??.?	??.?	??.?	??.?	????

Details

Features
Combat flap	Take-off flap	Landing flap	Air brakes	Arrestor gear
✓	✓	✓	✓	X

Limits
Wing-break speed (km/h)	Gear limit (km/h)	Combat flap (km/h)	Max Static G
			+	-
920	379	???	~??	~??

Optimal velocities
Ailerons (km/h)	Rudder (km/h)	Elevators (km/h)	Radiator (km/h)
< ???	< ???	< ???	> ???

Compressor (RB/SB)
Setting 1
Optimal altitude	100% Engine power	WEP Engine power
0 m	???? kgf	???? kgf

Survivability and armour

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.

Armaments

Suspended armament

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.

Usage in battles

Describe the tactics of playing in an aircraft, the features of using vehicles 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).

Pros and cons

Pros:

• Fearsome rocket armament
• Decent high-speed manoeuvrability

Cons:

• No gun armament
• Rockets are inaccurate
• Not very manoeuvrable at low speeds

History

F-89D at cruzing altitude.

Almost immediately after WWII, the Nothrop Corporation began developing an experimental jet fighter-interceptor to meet the new requirements for that class of aircraft. The American interceptor’s primary targets were supposed to be Soviet bombers, so the projected model’s flight characteristics and armament had to meet this objective. At first the two-seater twin-engine jet was developed to have a rather interesting four gun turret. This turret was to be mounted on the aircraft’s nose and could fire on targets either automatically or manually along a vertical plane either forward, up, down or, in some cases, backward. However, when the experimental model of the aircraft was ready, the turret still hadn’t undergone testing yet, so the military decided to install traditional static frontal guns on it, as well as HVARs on the wing pylons. It was with this loadout that the Scorpion F-89A and F-89B went into service. The armament was switched exclusively to rockets somewhat later. To make the change to rockets, the designers implemented an interesting solution: Mighty Mouse unguided rockets were installed on the front of the wing-mounted fuel tanks in such a way that the rocket and fuel sections of this part of the design were separated by a fireproof barrier. This also made it possible to install heavier, more destructive HVARs under the wing. The F-89D or “rocket” version of the Scorpion went on to become the most widespread version of the aircraft in the US air force – 682 of them were manufactured.

- From Devblog

Media

Images

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See also

• F-89B - Cannon-armed variant of the fighter.

External links

• [Development] F-89B and F-89D Scorpion: Jet Bros