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1 Số Trang Bị Cho Máy Bay
Súng Máy Tự Động 20mm

Nhìn Ác

70mm Rocket

The HYDRA 70 (70mm) Rocket System is a family of 2.75" unguided rockets.The 2.75 inch Folding-Fin Aerial Rocket (FFAR) was originally developed by the US Navy for use as a free-flight aerial rocket in the late 1940s. Used during both the Korean and Vietnam wars, their role has expanded to include air-to-ground, ground-to-air, and ground-to-ground. The 2.75 inch rocket system has a rich history of providing close air support to ground forces from about 20 different firing platforms, both fixed-wing and armed helicopters, by all US armed services. When the requirements of this system were changed to a new air-to-ground role for fixed and rotary wing aircraft, new fuzing and warhead performance characteristics, as well as a modified motor for low speed aircraft became necessary. The HYDRA 70 family of rockets was designed to fill this role. The Hydra 70 rocket system is used by US Army Special Operations Forces, the US Marine Corps, the US Navy, and the US Air Force. The Hydra-70 rocket is fired from all armed Army Helicopters and the armed helicopters of most sister services. The rocket is also fired from many U.S. fixed wing platforms and is a major export munition to many allied nations. The Army''s Hydra-70 PM at Rock Island, IL is assigned as the single item manager responsibile for meeting the rocket needs of all users.
The war reserve unitary and cargo warheads are used for anti-materiel, anti-personnel, and suppression missions. The Hydra 70 family of Folding-Fin Aerial Rockets (FFAR) also includes smoke screening, illumination, and training warheads. These rockets are used by rotary, wing, fixed and ground platforms. The most widely used application is on helicopters for air-to-ground engagements.
In the US Army, Hydra 70 rockets are fired from the AH-64A Apache/AH-64D Apache Longbow using M261 19-tube rocket launchers, and the OH-58D Kiowa Warrior and the AH-1F "modernized" Cobra using seven-tube M260 rocket launchers. The AH-1G Cobra and the UH-1B "Huey" used M200 19-tube rocket launchers. The Navy uses the 19 round LAU-61C/A and the seven round LAU-68 D/A rocket launchers. These reusable launchers have an external thermal coating that greatly prolongs cook-off protection time. Full production of these launchers began in June 1985.
To provide some stability the four rocket nozzles are scarfed at an angle to impart a slight spin to the rocket during flight. The modified motor provides increased stand-off range and reduced ballistic dispersion. The MK 66 rocket motor was designed to provide a common 2.75-inch rocket for helicopters and high-performance aircraft. Compared to the MK 40 motor, it has a longer tube, an improved double base solid propellant, and a different nozzle and fin assembly. Increased velocity and spin provide improved trajectory stability for better accuracy. The launch signature and smoke trail have been significantly reduced. The MK 66 Mod 1 is not hazards of electromagnetic radiation to ordnance safe. It can be inadvertently ignited by electromagnetic radiation, especially by radio frequencies found aboard Navy ships. Both the Mod 2 and Mod 3 have HERO filters, and the Mod 2 filter may prevent the AH-1 rocket management system from inventorying. The Mod 1 is the standard motor for Army use as will be the Mod 3 when it is fielded.
The HYDRA-70/2.75 Inch Rocket System is managed by Project Management Office, 2.75-Inch (70mm) Rockets. This office is a new Project Management Office, effective 01 October 1997. The 2.75"/HYDRA Rocket Acquisition Team received the Secretary of the Army Award for Excellence for Systems Contracting at a ceremony on 14 December 1998. Currently, General Dynamics is the general contractor for the rocket system and Thiokol produces flare rockets.
Components
The HYDRA-70 Rocket System is the Army name for the improved 2.75 Inch Rocket System and includes the following items:
* M260/M261 Light Weight Launchers (LWLs)
* MK66 Rocket Motor, Mods 1, 2, & 3
* M151 (10 lb) HE Warhead with M423 PD Fuze
* M229 (17 lb) HE Warhead with M423 PD Fuze
* M255A1 Flechette Warhead with M439 RS Fuze
* M257 Illumination Warhead with M442 Fuze (delay)
* M261 MPSM/HE Warhead
* M264 Smoke Screening (RP) Warhead with M439 Fuze
* M267 MPSM Practice Warhead
* M274 Smoke Signature Practice Warhead
* M278 IR Flare Warhead with M439 RS Fuze
The M260 Light Weight Launcher is a seven-tube launcher.
Configuration Center of Gravity
(In Inches from Front) Weight
(lbs)
Empty
35.2

35.2
M229/M423/MK66 (HE)
25.3

196.2
M151/M423/MK66 (HE)
32.9

202.5
M151/M433/MK66 (HE)
32.3

317.7
M257/MK66 (Illumination)
28.9

205.0
M264/MK66 (Smoke)
31.8

192.7
M261, M267/MK66 (MPSM)
28.4

225.6
M255A1/MK66 (Flechette)
28.4

225.6
M274/MK66 (Practice)
32.9

196.2
The M261 Light Weight Launcher is a nineteen-tube launcher.
Configuration Center of Gravity
(In Inches from Front) Weight
(lbs)
Empty
35.8

82
M229/M423/MK66 (HE)
27.2

660
M151/M423/MK66 (HE)
33.1

518
M257/M442/MK66 (Illumination)
29.0

542
M264/M439/MK66 (Smoke)
32.4

493
M261/M439/MK66 (MPSM)
28.5

598
M255A1/M439/MK66 (Flechette)
28.4

604
M274/MK66 (Practice)
32.9

516.0

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