M247 约克中士 | |
|---|---|
| 国家 | 美国 |
| 作用 | 40毫米自行高射炮 |
| 设计 | 1977–1985 |
| 建立 | 50 |
M247 中士约克的照片库， M247 约克中士 基于M48A5巴顿中型坦克底盘。它由大陆AVDS-1790-2D柴油发动机提供动力，开发750马力。M247配备全稳定双40毫米博福斯高射炮。这些枪提高了射击率。车辆可以在移动时准确开火。M247 发射 HE 和 HE-FRAG 子弹对空中目标和 AP 子弹对装甲车。共进行了580发子弹。重新加载需要不到 15 分钟。
源： 维基百科上的M247
| M247 Sergeant York | |
|---|---|
| 摄影师 | Unknow |
| 本地化 | 未知 |
| 照片 | 93 |
| M247 Sergeant York Walk Around | |
|---|---|
| 摄影师 | Cal Cochran |
| 本地化 | 未知 |
| 照片 | 47 |
另请参阅：
The Shield that Never Stood
这 M247 约克中士 is one of the most famous “what-if” failures in US military history. Designed in the late 1970s to protect mechanized divisions from Soviet attack helicopters and jets, it combined an M48 Patton tank chassis with twin 40mm Bofors cannons and a radar system derived from the F-16 fighter. While it looked formidable, the project was plagued by technical glitches, massive cost overruns, and embarrassing performance during live-fire trials. It was ultimately canceled in 1985 by Secretary of Defense Caspar Weinberger after only 50 units were produced.
| Attribute | Technical Specification (M247) |
|---|---|
| 作用 | Self-Propelled Anti-Aircraft Gun (SPAAG) |
| 船员 | 3 （指挥官， 枪手， 司机） |
| 主要武器装备 | 2 × 40 mm Bofors L/70 autocannons |
| Chassis | Modified M48A5 Patton tank hull |
| Radar System | Westinghouse AN/APG-66 (Pulse-Doppler) |
| Rate of Fire | 600 rounds per minute (combined) |
| 发动机 | Continental AVDS-1790-2D V12 diesel (750 hp) |
| 地位 | Project canceled in 1985 |
Design Engineering: Frankenstein’s Turret
- The F-16 Radar Graft: To save money, Ford Aerospace used the AN/APG-66 radar from the F-16. However, a radar designed for the sky struggled to differentiate between low-flying helicopters and ground clutter (trees, hills, and even latrine fans).
- Proximity Fuzed Ammo: The Sergeant York was intended to use advanced 40mm shells that didn’t need a direct hit; they would explode near a target to shred it with shrapnel. This made the 40mm Bofors far more lethal against agile helicopters than traditional “hit-to-kill” rounds.
- Chassis Mismatch: Using the aging M48 Patton chassis was a double-edged sword. It was readily available, but it was much slower than the M1 Abrams and M2 Bradley it was supposed to protect, meaning the anti-aircraft shield would have been left behind in a fast-moving armored dash.
- Turret Weight: The massive armored turret was so heavy that it strained the M48’s hydraulic traverse systems, leading to slow response times when trying to track high-speed jets.
A History of Trials and Errors
- The “Latrine” Incident: During a high-profile demonstration for officials, the M247’s radar reportedly locked onto a spinning exhaust fan on a nearby latrine instead of the target drone, highlighting its inability to filter out ground interference.
- Target Tracking Failures: In live-fire tests, the system struggled to hit targets that were moving even slightly, and in one infamous test, it reportedly aimed its guns at the reviewing stand where the brass was sitting.
- The Legacy of Failure: The M247’s cancellation left the US Army without a heavy gun-based air defense system for decades. This gap was eventually filled by the M6 Linebacker (a Bradley with Stinger missiles) and later the M-SHORAD Stryker.
- Museum Pieces: Almost all M247s were used as targets on firing ranges. Only a few survive today in museums, such as the Sgt. York at the Sargeant York State Historic Park in Tennessee.
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