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  ..[ ].. > > ( ) ( Department of General military subjec
 


AH-64A/D Apache Attack Helicopter, USA

( ) ( Department of General military subjec


 

02-03-09, 08:22 PM

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AH-64A/D Apache Attack Helicopter, USA



 

AH-64A/D Apache Attack Helicopter, USA

Key Data
Crew
2 - pilot and copilot / gunner
Main Rotor Blade Diameter
14,630cm
Height
3,590cm
Empty Weight
5,352kg
Maximum Cruising Speed
260km/h
Maximum Rate of Climb
942m/min
Maximum Vertical Rate of Climb
474m/min
Full specifications
The Apache is a twin-engined army attack helicopter developed by McDonnell Douglas (now Boeing). It entered service with the US Army in 1984 and has been exported to Egypt, Greece, Israel, the Netherlands, Saudi Arabia, United Arab Emirates and the United Kingdom.
"The Apache is a twin-engined army attack helicopter developed by McDonnell Douglas (now Boeing)."
The US Army has more than 800 Apaches in service, and more than 1,000 have been exported. The Apache was first used in combat in 1989 in the US military action in Panama. It was used in Operation Desert Storm and has supported low intensity and peacekeeping operations worldwide including Turkey, Bosnia and Kosovo.

The AH-64D Longbow has been deployed by the US Army in Afghanistan as part of Operation Anaconda, in support of Operation Iraqi Freedom and, from June 2003, in South Korea.

Article Continues


The AH-64D Longbow is fitted with the Longbow millimetre wave fire control radar and the Longbow Hellfire missile. 501 AH-64A Apaches upgraded to AH-64D standard have been delivered to the US Army. Deliveries completed in August 2006.
13 additional new-build Apaches have been ordered. A further 11 were ordered in November 2006. In January 2007, the US Army ordered 96 additional remanufactured helicopters and, in April 2007, 18 new-build helicopters. The first new-build AH-64D was delivered to the US Army in June 2007 and the first of the additional remanufactured helicopters in October 2007.
INTERNATIONAL ORDERS
The Longbow has also been ordered by the Netherlands (30, deliveries complete), Singapore (20, first delivered in May 2002, deliveries complete), Israel (designated 'Seraph' nine new, nine remanufactured, first delivered April 2005) and Egypt (35, remanufactured, deliveries completed in January 2007).
A number of AH-64A helicopters have been upgraded to AH-64D standard for South Korea. 30 Apaches of United Arab Emirates (UAE) are being upgraded to AH-64D Longbow standard, deliveries are to begin in May 2008. In June 2006, Saudi Arabia requested the upgrade of 12 Apaches to AH-64D standard.
In August 2001, the AH-64D was selected by the Japanese Ground Self-Defence Force with a requirement for 55 helicopters. The Apache for Japan is designated AH-64DJP and is armed with Stinger air-to-air missiles. Deliveries are scheduled to begin in March 2006.
In September 2002, Kuwait ordered 16 AH-64D helicopters. The first was delivered in February 2007. The Kuwaiti Apaches are equipped with BAE Systems HIDAS defensive aids system. In September 2003, Greece signed a contract for 12 (plus four options) AH-64D Longbow, also to be fitted with HIDAS. The first was delivered in January 2007.
BLOCK UPGRADES
The first of the upgraded Block II Apaches was delivered to the US Army in February 2003. Block II includes upgrades to the digital communications systems to improve communications within the 'tactical internet'.
In July 2005, the US Army awarded Boeing a development contract for Block III improvements, to enter service from 2011.
"Block III improvements, slated for 2008 onwards, include increasing digitisation."
Block III improvements, slated for 2008 onwards, include increasing digitisation, the joint tactical radio system, enhanced engines and drive systems, capability to control UAVs and new composite rotor blade. The new blades, which successfully completed flight testing in May 2004, increase the Apache's cruise speed, climb rate and payload capability. The Block III System Development and Demonstration (SDD) contract was awarded to Boeing in July 2006.
The US Army plans to upgrade all its Apache fleet to Block III standard.
WAH-64
A consortium of GKN Westland (now AgustaWestland), Boeing, Lockheed Martin, Northrop Grumman and Shorts bid a version of the Longbow Apache for the UK Army attack helicopter requirement which was selected in July 1995. Assembly of the WAH-64 Longbow Apache was carried out in the UK by AgustaWestland.
The first helicopter entered service in January 2001 designated as the AH Mk 1. 67 helicopters have been delivered; the last was formally handed over at the Farnborough Air Show in July 2004.
Initial operating capability was achieved in October 2004 and, in May 2005, the first of three Army Air Corps regiments of 18 helicopters was declared fully operational. The other two regiments are expected to be fully operational by 2010. The AH mk 1 helicopter has also been operated successfully on HMS Ocean helicopter carrier and, in November 2006, made a first landing on Invincible Class aircraft carrier, HMS Ark Royal.
In March 2007, the UK Ministry of Defence announced that, by September 2007, all UK Army Apache helicopters will be based at Wattisham Airbase in Suffolk.
APACHE WEAPONS
A 30mm automatic Boeing M230 chain gun is located under the fuselage. It provides a rate of fire of 625 rounds per minute. The helicopter has capacity for up to 1,200 rounds of ammunition.
The AH-64D is armed with the Lockheed Martin/Boeing AGM-114D Longbow Hellfire air-to-surface missile which has a millimetre wave seeker which allows the missile to perform in full fire and forget mode. Range is 8km to 12km.
"The Apache's 30mm automatic Boeing M230 chain gun has a rate of fire of 625 rounds per minute."
The Apache can be equipped with air-to-air missiles (Stinger, AIM-9 Sidewinder, Mistral and Sidearm) and the Advanced Precision Kill Weapon System (APKWS), formerly known as Hydra, family of guided and unguided 70mm rockets. From 2008, it will be armed with the Advanced Precision Kill Weapon System (APKWS) II, a laser-guided version of the Hydra. The US Army awarded BAE Systems a contract for the APKWS II in April 2006.
British Army AH Mk 1 helicopters are armed with the CRV7 70mm rocket system from Bristol Aerospace of Winnipeg, Manitoba.
The Longbow Apache carries the combination of armaments chosen for the particular mission. In the close support role, the helicopter carries 16 Hellfire missiles on four four-rail launchers and four air-to-air missiles.
SENSORS
The AH-64D Longbow Apache is equipped with the Northrop Grumman millimetre-wave Longbow radar. The Longbow fire control radar incorporates an integrated radar frequency interferometer for passive location and identification of radar-emitting threats. An advantage of millimetre wave is that it performs under poor-visibility conditions and is less sensitive to ground clutter. The short wavelength allows a very narrow beamwidth, which is resistant to countermeasures.
The Longbow Apache can effect an attack in 30 seconds. The radar dome is unmasked for a single radar scan and then remasked. The processors determine the location, speed and direction of travel of a maximum of 256 targets.
The Target Acquisition Designation Sight, TADS (AN/ASQ-170), and the Pilot Night Vision Sensor, PNVS (AN/AAQ-11), were developed by Lockheed Martin. The turret-mounted TADS provides direct-view optics, television and three-fields-of-view forward-looking infrared (FLIR) to carry out search, detection and recognition, and Litton laser rangefinder/designator. PNVS consists of a FLIR in a rotating turret located on the nose above the TADS. The image from the PNVS is displayed in the monocular eyepiece of the Honeywell Integrated Helmet And Display Sighting System, IHADSS, worn by the pilot and copilot/gunner.
"The AH-64D Longbow Apache is equipped with the Northrop Grumman millimetre-wave Longbow radar."
Lockheed Martin has developed a new targeting and night vision system for the Apache, using second-generation long-wave infrared sensors with improved range and resolution. The new system is called Arrowhead and has a targeting FLIR with three fields of view, a dual field-of-view pilotage FLIR, a CCD TV camera, electronic zoom, target tracker and auto-boresight. Arrowhead entered production in December 2003 and the first unit was delivered to the US Army in May 2005. 704 US Army Apaches are to be equipped with Arrowhead by 2011.
A contract to equip the UK AH Mk1 helicopters with Arrowhead was placed in May 2005. Deliveries are scheduled for between 2009 and 2010.
COUNTERMEASURES
The Apache is equipped with an electronic warfare suite consisting of: AN/APR-39A(V) radar warning receiver from Northrop Grumman (formerly Litton) and Lockheed Martin; Lockheed Martin AN/APR-48A Radar Frequency Interferometer Electronic Support target acquisition system; AN/ALQ-144 infra-red countermeasures set from BAE Systems IEWS (formerly Sanders, a Lockheed Martin company); AN/AVR-2 laser warning receiver from Goodrich (formerly Hughes Danbury Optical Systems then Raytheon); AN/ALQ-136(V) radar jammer developed by ITT; and chaff dispensers.
US Army Longbow Apaches were to be fitted with the ITT AN/ALQ-211 SIRCM (Suite of Integrated Radio Frequency Countermeasures) suite, however the availability of funding for this project is uncertain.
UK AH Mk 1 Apaches are fitted with BAE Systems Helicopter Integrated Defensive Aids Suite (HIDAS), also chosen by Kuwait and Greece. HIDAS, which includes the Sky Guardian 2000 radar warning receiver, entered service on the AH Mk 1 in July 2003.
Israeli AH-64D helicopters are fitted with the Elisra Seraph self-protection system, including SPS-65 missile warner and SPJ-40 radar jammer.
Dutch AH-64D helicopters are being fitted with the Northrop Grumman Directional Infrared Countermeasures (DIRCM) pod.
ENGINES
The Apache is equipped with two turboshaft engines, each providing 1,265kW. The American AH-64D has General Electric T700-GE-701 engines and the UK Apache is fitted with RTM322 engines from Rolls-Royce / Turbomeca.


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An Apache Longbow armed with 16 Hellfire missiles, eight under each wing.

 

 


 

   

02-03-09, 08:22 PM

  : 2
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An Apache Longbow armed with 16 Hellfire missiles, eight under each wing.



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The Apache has been designed for high survivability in combat.



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The M230 provides a fire rate of 625 rounds per minute.



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The AH-64D Longbow Apache entered service with the 1st Battalion of the 227th Aviation Regiment in October 1998.



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Apache firing one of its Advanced Precision Kill Weapon System (APKWS), formerly known as Hydra, 70mm rockets.



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Near Real-Time situational awareness schematic.



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The AD-64D Apache Longbow is the most lethal, survivable, deployable and maintainable multimission helicopter in the world.



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British Army Longbow Apaches are equipped with CRV7 70mm rocket systems.

 

 


   


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