Difference between revisions of "M247"

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m (Removed category (not a radar))
(Added basic armour, gun and ammunition data, and media link. Velocity and filler amount for HE ammo taken from manual TM 43-0001-28 (April 1994))
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== General info ==
 
== General info ==
 
=== Survivability and armour ===
 
=== Survivability and armour ===
−
''Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat?''
+
<!--''Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat?''
  
−
''If necessary use a visual template to indicate the most secure and weak zones of the armour.''
+
''If necessary use a visual template to indicate the most secure and weak zones of the armour.''-->
 +
'''Armour type:'''
 +
 
 +
*Cast homogeneous armour (Hull)
 +
*Rolled homogeneous armour (Rear (low), Roof, Turret)
 +
 
 +
{| class="wikitable"
 +
|-
 +
! Armour !! Front (Slope angle) !! Sides !! Rear !! Roof
 +
|-
 +
| Hull || 85-200 mm (59-74°) ''Front glacis'' <br> 63-200 mm (13-60°) ''Lower glacis'' || 76 mm (8-43°) ''Front'' <br> 51 mm (0-43°) ''Rear'' || 35 mm (26-32°) ''Top'' <br> 25 mm (61-62°) ''Bottom'' || 57 mm
 +
|-
 +
| Turret || 25.4 mm (15-76°) ''Turret front (Upper)'' <br> 12.7 mm (40-69°) ''Turret front (Lower)'' <br> 25.4 mm (0-87°) ''Gun mantlet'' || 12.7-25.4 mm (0-19°) ''Upper'' <br> 12.7 mm (40-69°) ''Lower'' || 12.7 mm (18°) || 12.7 mm
 +
|-
 +
|}
 +
'''Notes:'''
 +
 
 +
* Suspension wheels and tracks are 20 mm thick.
 +
* Belly armour is 38 mm in the front and 25 mm in the rear.
  
 
=== Mobility ===
 
=== Mobility ===
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== Armaments ==
 
== Armaments ==
−
=== Main armament ===
+
<!--''Give the reader information about the characteristics of the main gun. Assess its effectiveness in a battle based on the reloading speed, ballistics and the power of shells. Do not forget about the flexibility of the fire, that is how quickly the cannon can be aimed at the target, open fire on it and aim at another enemy. Add a link to the main article on the gun: <code><nowiki>{{main|Name of the weapon}}</nowiki></code>. Describe in general terms the ammunition available for the main gun. Give advice on how to use them and how to fill the ammunition storage.''-->
−
''Give the reader information about the characteristics of the main gun. Assess its effectiveness in a battle based on the reloading speed, ballistics and the power of shells. Do not forget about the flexibility of the fire, that is how quickly the cannon can be aimed at the target, open fire on it and aim at another enemy. Add a link to the main article on the gun: <code><nowiki>{{main|Name of the weapon}}</nowiki></code>. Describe in general terms the ammunition available for the main gun. Give advice on how to use them and how to fill the ammunition storage.''
+
{{main|Bofors L/70 (40 mm)}}
 +
 
 +
{| class="wikitable" style="text-align:center"
 +
|-
 +
! colspan="6" | [[Bofors L/70 (40 mm)|40 mm M266 Automatic Cannon]] (x2)
 +
|-
 +
! colspan="3" rowspan="1" style="width:5em" |Capacity (Belt capacity each)
 +
! rowspan="1" | Fire rate <br> (shots/minute)
 +
! rowspan="1" | Vertical <br> guidance
 +
! rowspan="1" | Horizontal <br> guidance
 +
|-
 +
| colspan="3" | 560 (280) || 300 || -5°/+85° || ±180°
 +
|-
 +
! colspan="6" | Turret rotation speed (°/s)
 +
|-
 +
! style="width:4em" |Mode
 +
! style="width:4em" |Stock
 +
! style="width:4em" |Upgraded
 +
! style="width:4em" |Prior + Full crew
 +
! style="width:4em" |Prior + Expert qualif.
 +
! style="width:4em" |Prior + Ace qualif.
 +
|-
 +
| ''Arcade'' || 52.8 || ? || ? || ? || ?
 +
|-
 +
| ''Realistic'' || 35.7 || ? || ? || ? || ?
 +
|-
 +
! colspan="4" | Reloading rate (seconds)
 +
|-
 +
! colspan="1" style="width:4em" |Stock
 +
! colspan="1" style="width:4em" |Prior + Full crew
 +
! colspan="1" style="width:4em" |Prior + Expert qualif.
 +
! colspan="1" style="width:4em" |Prior + Ace qualif.
 +
|-
 +
| 6.5 || ? || ? || ?
 +
|-
 +
|}
  
−
=== Additional armament ===
+
=== Ammunition ===
−
''Some tanks are armed with several guns in one or more turrets. Evaluate the additional weaponry and give advice on its use. Describe the ammunition available for additional weaponry. Give advice on how to use them and how to fill the ammunition storage. If there is no additional weaponry remove this subsection.''
+
{| class="wikitable sortable" style="text-align:center" width="100%"
 +
! colspan="8" | Penetration statistics
 +
|-
 +
! rowspan="2" data-sort-type="text" | Ammunition
 +
! rowspan="2" class="unsortable" | Type of <br /> warhead
 +
! colspan="6" | '''Penetration''' '''''in mm''''' '''@ 90°'''
 +
|-
 +
! 10m
 +
! 100m
 +
! 500m
 +
! 1000m
 +
! 1500m
 +
! 2000m
 +
|-
 +
| M811 || HEFI-T* || 5 || 5 || 5 || 5 || 5 || 5
 +
|-
 +
| M822 || HEFI-T* || 5 || 5 || 5 || 5 || 5 || 5
 +
|-
 +
| 40 mm AP-T || AP-T || 93 || 90 || 77 || 62 || 51 || 41
 +
|-
 +
|}
 +
{| class="wikitable sortable" style="text-align:center" width="100%"
 +
! colspan="11" | Shell details
 +
|-
 +
! rowspan="2" data-sort-type="text" | Ammunition
 +
! rowspan="2" class="unsortable" | Type of <br /> warhead
 +
! rowspan="2" |Velocity <br /> in m/s
 +
! rowspan="2" |Projectile<br />Mass in kg
 +
! rowspan="2" | ''Fuse delay''
 +
''in m:''
 +
! rowspan="2" | ''Fuse sensitivity''
 +
''in mm:''
 +
! rowspan="2" | ''Explosive Mass in g<br /> (TNT equivalent):''
 +
! rowspan="2" | ''Normalization At 30° <br> from horizontal:''
 +
! colspan="3" | ''Ricochet:''
 +
|-
 +
! 0%
 +
! 50%
 +
! 100%
 +
|-
 +
| M811 || HEFI-T* || 1100 || 0.87 || 0.2 || 0.1 || 255 || +0° || 79° || 80° || 81°
 +
|-
 +
| M822 || HEFI-T* || 1100 || 0.87 || 0.2 || 0.1 || 185 || +0° || 79° || 80° || 81°
 +
|-
 +
| 40 mm AP-T || AP-T || 1030 || 0.88 || N/A || N/A || N/A || -1° || 48° || 69° || 79°
 +
|-
 +
|}
  
−
=== Machine guns ===
+
===Belt types===
−
''Offensive and anti-aircraft machine guns not only allow you to fight some aircraft, but also are effective against lightly armoured vehicles. Evaluate machine guns and give recommendations on its use.''
+
{|class="wikitable" style="text-align:center" width="100%"
 +
|style="width: 8%" | '''Belts'''
 +
|style="width: 20%" | '''Shell composition'''
 +
| '''Combat usage'''
 +
|-
 +
| ''Default'' || HEFI-T* / AP-T ||align="left"| These work fine, a hit on an aircraft means instant disassembly for it and still is able to hurt ground vehicles, especially if it is side into the side of a enemy tank. These seem like a good I don't know what i will run into belt.
 +
|-
 +
|''40 mm AP-T'' || AP-T / AP-T / AP-T / HEFI-T* ||align="left"| Very powerful ammunition against ground targets with significantly more penetration than other 35-40 mm AP-T projectiles. Will easily destroy any target with side shots even outside point blank range, and can destroy lighter targets and weak spots from the front even against MBTs.
 +
|-
 +
|''M811'' || HEFI-T* / HEFI-T* / HEFI-T* / AP-T ||align="left"| "Poor man's anti-air ammunition." Unlike the M822 shells these require direct hits to do damage, but if you experience problems with M822 detonating too early this belt may be your best choice.
 +
|-
 +
|''M822'' || HEFI-T* / HEFI-T* / AP-T ||align="left"| Proximity-fused shells that absolutely obliterate anything flying, when they work. Somewhat unreliable in if they detonate within range of the target, but when they do the target will be quickly torn apart. The only ammunition for self-propelled anti-aircraft guns that lets you kill planes and helicopters with near misses. Should be your go-to anti-air ammunition, if it works reliably for you.
 +
|}
  
 
== Usage in battles ==
 
== Usage in battles ==
−
''Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but give the reader food for thought. Describe 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 vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but give the reader food for thought. Describe 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 and cons ===
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'''Pros:'''
 
'''Pros:'''
  
−
* Twin L/70 40mm Bofors guns have a better rate of fire compared to the M42 Duster.
+
* Twin 40mm M266 cannon (L/70 40mm Bofors) have a better rate of fire compared to the M42 Duster.
 +
* The M822 ammunition is proximity fused, and will detonate if the projectile passes close enough to the target.
 
* The 40mm's pose a serious threat to lightly-armored vehicles.
 
* The 40mm's pose a serious threat to lightly-armored vehicles.
 
* Uses the M48 Patton's hull (armor included) = one of the best-protected SPAA in the game.
 
* Uses the M48 Patton's hull (armor included) = one of the best-protected SPAA in the game.
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== Media ==
 
== Media ==
−
''An excellent addition to the article will be video guides, as well as screenshots from the game and photos.''
+
<!--''An excellent addition to the article will be video guides, as well as screenshots from the game and photos.''-->
 +
[https://live.warthunder.com/feed/camouflages/?q=#m247 '''Skins''' and '''camouflages''' for the M247 Sergeant York from live.warthunder.com.]
  
 
== See also ==
 
== See also ==

Revision as of 03:28, 4 August 2019

Introducing Wiki 3.0
M247
us_m247.png
M247
USA flag.png USA
VI Rank
Battle rating:
AB RB SB
9.0 9.0 9.0
Class:
Research:190 000 Specs-Card-Exp.png
Purchase:520 000 Specs-Card-Lion.png

Description

The Gun, Air Defence Artillery, Self-Propelled, 40-mm, M247 is a Rank VI American self-propelled anti-aircraft gun with a battle rating of 9.0 (AB/RB/SB). It was introduced in Update 1.81 "The Valkyries".

General info

Survivability and armour

Armour type:

  • Cast homogeneous armour (Hull)
  • Rolled homogeneous armour (Rear (low), Roof, Turret)
Armour Front (Slope angle) Sides Rear Roof
Hull 85-200 mm (59-74°) Front glacis
63-200 mm (13-60°) Lower glacis 		76 mm (8-43°) Front
51 mm (0-43°) Rear 		35 mm (26-32°) Top
25 mm (61-62°) Bottom 		57 mm
Turret 25.4 mm (15-76°) Turret front (Upper)
12.7 mm (40-69°) Turret front (Lower)
25.4 mm (0-87°) Gun mantlet 		12.7-25.4 mm (0-19°) Upper
12.7 mm (40-69°) Lower 		12.7 mm (18°) 12.7 mm

Notes:

  • Suspension wheels and tracks are 20 mm thick.
  • Belly armour is 38 mm in the front and 25 mm in the rear.

Mobility

Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability as well as the maximum speed forward and backward.

Armaments

Main article: Bofors L/70 (40 mm)
40 mm M266 Automatic Cannon (x2)
Capacity (Belt capacity each) Fire rate
(shots/minute) 		Vertical
guidance 		Horizontal
guidance
560 (280) 300 -5°/+85° ±180°
Turret rotation speed (°/s)
Mode Stock Upgraded Prior + Full crew Prior + Expert qualif. Prior + Ace qualif.
Arcade 52.8  ?  ?  ?  ?
Realistic 35.7  ?  ?  ?  ?
Reloading rate (seconds)
Stock Prior + Full crew Prior + Expert qualif. Prior + Ace qualif.
6.5  ?  ?  ?

Ammunition

Penetration statistics
Ammunition Type of
warhead 		Penetration in mm @ 90°
10m 100m 500m 1000m 1500m 2000m
M811 HEFI-T* 5 5 5 5 5 5
M822 HEFI-T* 5 5 5 5 5 5
40 mm AP-T AP-T 93 90 77 62 51 41
Shell details
Ammunition Type of
warhead 		Velocity
in m/s 		Projectile
Mass in kg 		Fuse delay

in m:

Fuse sensitivity

in mm:

Explosive Mass in g
(TNT equivalent): 		Normalization At 30°
from horizontal: 		Ricochet:
0% 50% 100%
M811 HEFI-T* 1100 0.87 0.2 0.1 255 +0° 79° 80° 81°
M822 HEFI-T* 1100 0.87 0.2 0.1 185 +0° 79° 80° 81°
40 mm AP-T AP-T 1030 0.88 N/A N/A N/A -1° 48° 69° 79°

Belt types

Belts Shell composition Combat usage
Default HEFI-T* / AP-T These work fine, a hit on an aircraft means instant disassembly for it and still is able to hurt ground vehicles, especially if it is side into the side of a enemy tank. These seem like a good I don't know what i will run into belt.
40 mm AP-T AP-T / AP-T / AP-T / HEFI-T* Very powerful ammunition against ground targets with significantly more penetration than other 35-40 mm AP-T projectiles. Will easily destroy any target with side shots even outside point blank range, and can destroy lighter targets and weak spots from the front even against MBTs.
M811 HEFI-T* / HEFI-T* / HEFI-T* / AP-T "Poor man's anti-air ammunition." Unlike the M822 shells these require direct hits to do damage, but if you experience problems with M822 detonating too early this belt may be your best choice.
M822 HEFI-T* / HEFI-T* / AP-T Proximity-fused shells that absolutely obliterate anything flying, when they work. Somewhat unreliable in if they detonate within range of the target, but when they do the target will be quickly torn apart. The only ammunition for self-propelled anti-aircraft guns that lets you kill planes and helicopters with near misses. Should be your go-to anti-air ammunition, if it works reliably for you.

Usage in battles

Pros and cons

Pros:

  • Twin 40mm M266 cannon (L/70 40mm Bofors) have a better rate of fire compared to the M42 Duster.
  • The M822 ammunition is proximity fused, and will detonate if the projectile passes close enough to the target.
  • The 40mm's pose a serious threat to lightly-armored vehicles.
  • Uses the M48 Patton's hull (armor included) = one of the best-protected SPAA in the game.
  • Benefits in RB from aim assist thanks to the radar.

Cons:

  • As with all high-rank SPAA, very thin turret armor; a shell strike could instantly end the vehicle.
    • Turret is also vulnerable to strafing aircraft + rockets.
  • Armor advantages are nullified due to the inclusion of the Hull Break mechanic

History

Describe the history of the creation and combat usage of the ground vehicle in more detail than in the introduction. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ History" (example: https://wiki.warthunder.com/(Vehicle-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article.

Media

Skins and camouflages for the M247 Sergeant York from live.warthunder.com.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the series of the vehicles;
  • links to approximate analogues of other nations and research trees.

External links


USA anti-aircraft vehicles
M3 Half-track derivatives  M13 MGMC · M15 CGMC · M16 MGMC
M24 derivative  M19A1
M41 derivative  M42
Radar SPAAG  M163 · M247
Missile SPAA  ADATS · Imp.Chaparral · LAV-AD · XM975

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