comanche, page 1
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reply posted on 5-2-2004 @ 05:08 PM by dreamrebel
This is an article on it:

Quote:

"RAH-66 COMANCHE RECONNAISSANCE/ATTACK HELICOPTER, USA
The Comanche RAH-66 is the US Army's new Reconnaissance and Attack Helicopter being developed by Boeing Sikorsky. The first flight of the Comanche took place on 4th January 1996. The program entered Engineering and Manufacturing Development (EMD) in June 2000, which requires the construction of nine aircraft in addition to the two prototypes by 2006. Critical design review of the overall weapon system was completed in June 2003 to be followed by assembly of the development helicopters. Low rate initial production of 78 helicopters in three batches will begin in 2007. The armed reconnaissance Block I version is scheduled for initial operating capability in 2009 and heavy attack Block II version in 2011. The US Army requirement is for 650 Comanche helicopters.

Production of the Comanche will take place at Sikorsky's new site in Bridgeport, Connecticut. Boeing is responsible for manufacturing and assembling the composite tail section and rotor blades. Sikorsky manufactures the main fuselage and gearbox and is responsible for integration and final assembly of the airframe.

In an armed reconnaissance mission, Comanche can recognise and identify targets and digitally transmit the information to the battlefield commander in near real-time, select the optimum force deployment and co-ordinate the attack.

DESIGN

The airframe is crashworthy and ballistically tolerant to 23mm gunfire. The radar cross section has been minimised, primarily by the precisely shaped fuselage and internal weapons configuration. The helicopter has a composite five-bladed bearingless main rotor and an enclosed composite fantail tailrotor for increased anti-torque capability. The rear rotor is able to withstand impact by 12.7mm rounds and provides a 180° turn in 4.7 seconds in hover mode and an 80 knot snap-turn-to-target in 4.5 seconds.

COCKPIT

The Comanche has two identical cockpits for the pilot and the co-pilot, which are sealed and have a positive pressure air system for protection against chemical and biological warfare. The fly-by-wire flight control system is triple redundant. The cockpit is fitted with a pilot's night vision system from Lockheed Martin and the pilots have a wide field of view (35° x 52°) Kaiser Electronics Helmet Integrated Display Sighting System (HIDSS). HIDSS employs active matrix liquid crystal display (AMLCD) technology. The targets are designated and the weapons fired from collective and sidestick control push buttons. Each integrated cockpit has Harris Corp. flat screen liquid crystal displays, a colour display for a digital moving map system, tactical situation and night operation display.

Northrop Grumman is providing the Comanche's integrated Communications, Navigation and Identification (CNI) suite. The CNI suite will feature secure multi-wave, multiband multimode wireless communications, Link 16, satellite communications and Enhanced Position Locating Reporting System (EPLRS) via the tactical internet.

WEAPONS

The Comanche carries its weapons internally and has a weapons bay on each side of the fuselage. The missiles are mounted on the weapon bay doors which open sideways. The internal weapon bay can be fitted with Stinger, Starstreak or Mistral air-to-air missiles; TOW II, Hot II or Longbow Hellfire air-to-ground missiles; Sura D 81mm, Snora 81mm, Hydra 70 rockets; or the Army Counter Air Weapon System. The number of missiles on each door mounting varies, for example each door will hold three Hellfire or six Stinger missiles. The helicopter can be reconfigured with optional stub wings fitted with multiple weapon pylons which carry an additional four Hellfire or eight Stinger missiles.

The Comanche is equipped with a turreted gun system from General Dynamics Armament Systems. The stowable externally-powered three-barrel 20mm Gatling gun is capable of firing 750 or 1,500 rounds per minute. The gun is mounted on a Giat composite turret (weighing 127kg) under the nose of the helicopter. The 500 round ammunition supply system can be reloaded in less than 8 minutes by two crew members.

COUNTERMEASURES

The helicopter countermeasures suite includes an AN/AVR-2A(V) Advanced Laser Warning Receiver from Goodrich Electro-Optical Systems (formerly Raytheon) of Danbury, Connecticut and the ITT AN/ALQ-211 SIRCM (Suite of Integrated Radio Frequency Countermeasures) suite, as well as infrared jammers.

FIRE CONTROL AND OBSERVATION

The Comanche is equipped with a suite of passive sensors and a computer-aided Northrop Grumman mission planning system, which carries out sensor data fusion, high-speed analysis and correlation of the sensor data. Northrop Grumman TASS (Target Acquisition System Software) functions include automatic target tracking and target threat management. The analysed data is presented to the crew in the cockpit displays or transmitted to other elements of the force, providing direct relay of near real time intelligence.

Lockheed Martin Missiles and Fire Control has developed the EOSS (Electro-Optics Sensor System) which comprises: EOTADS target acquisition and designation system, including solid-state TV sensor, two-colour laser rangefinder/designator and second-generation focal plane array long-wave FLIR (forward-looking infrared); and NVPS Night Vision Pilotage System with a second FLIR. The first complete EOSS system was delivered in June 2003.

The Comanche will be fitted with a fire control radar (based on the Longbow millimetre wave radar on the AH-64D Apache helicopter) being developed by Northrop Grumman Land Combat Systems and Lockheed Martin Missiles & Fire Control.

NAVIGATION AND COMMUNICATIONS

The helicopter has a global positioning system, a radar altimeter and an attitude heading reference system (AHRS) from Northrop Grumman (formerly Litton).

It is equipped with an identification friend or foe (IFF) interrogator and a dual jam resistant VHF-FM / UHF-AM Have Quick tactical communications system.

ENGINES

The Comanche is equipped with two T-800-LHT-801 turboshaft engines from LHTec with a maximum rated power of 1,563 shaft horsepower each. The internal fuel capacity of the helicopter is 1,142 litres. "




[Edited on 5-2-2004 by dreamrebel]


reply posted on 5-2-2004 @ 07:08 PM by Valhall
Here is a thread I posted awhile back:

Originally posted by Valhall
"After 20 years and $6 billion, the latest of many restructuring efforts could finally save the Army's endangered RAH-66 helicopter development program"

That's the blurb across the first two pages of an article written by Ron Laurenzo in the October issue of Aerospace America entitled "New life for Comanche?"

After those 20 years, and 6 billion dollars, all the Army has to show for it's patience, mismanagement, delusions of grandeur and our money, are 2 prototypes.

Everything in the world has set back this program. As Laurenzo puts it "...the Comanche has become something of a poster child for what can go wrong in a high-tech procurement program." The reasons range from mission creep due to grandiose ideas in the military branch (mainly fueled by the dynamics of the possible enemy and the face of the possible battlefield weaponry) to the lean mean years of Clinton's military underfunding.

Well, we still don't have our Comanche...BUT, things are looking up for the "horse-warriors" of the skies. The program has been restructured to make deliverables and technological improvements in a "spiral" project path. In other words, cut to the chase and give us the basic model, the retrofit, add ons, advance as the program proceeds on.

"The Army has requested $1.1 billion in R&D money for Comanche in 2004. All four congressional defence committes have now approved that amount."

They are aiming for operational capabilities in late 2009, with 9 Comanches being delivered from 2005-2006 (new prototypes). The Pentagon will then decide, sometime in 2007 if te Comanche is ready for a low level production rate (73 production aircraft!) "It is slated to replace the services' OH-6s and OH-58s special operations and scout helicopters."

Some specs and capabilities of the Comanche:

Can cruise at 175 kt (exceed 200 kt in a dive)
Radar cross section is 360 times less that the radar signature of a AH-64 Apache; 250 times less than the Kiowa Warrior (OH-58D)
The bearingless five-bladed rotor and fantail design makes it 50% quieter than other helicopters (but also reduces the infrared signature).
Can endure more damage and is easier repaired in-field.
Power-pack: 2 T802 engines (1500 shp each).
"The chin turret will hold a three barrel-20 mm cannon."
The weapons bays will be able to hold up to six of either the Hellfires or the Stingers, as well as the Hydra rocket. Later project cycles will increase munitions carrying capabilities even further than these.
The Comanche can now "take off and climb vertically at 500 ft/min in 'mission configuration' at an altitude of 4000 ft above SL and temperature of 95F...a critical flight performance requirement.

But..."the most exciting thing about Comanche, say program officials and aviation analysts, is the way it is wired into the rest of the joint warfighting machine." It will actually serve to point out targets to other aircraft and missile systems.

The next big step in the development is the software package that will not only integrate the Comanche but achieve "digitzation, sound modification and information management". Program managers believe the delivery date will be met.

Future improvements will take place concurrent with the project's basic deliverables. There are between 200 and 250 different efforts underway to reduce the Comanche's weight, and talks about the appropriateness of increasing engine output; formerly reduce to achieve longer life.

Concerning connectivity: "One goal is to close a T-1 link to a 1-ft terminal on a moving vehicle...If you have a battalion in the field with a number of satcom links, they will have connectivity back into the greater network. Once the data gets into the battalion, it can be relayed wirelessly out to the individual solder, who should be able to pull data onto a handheld unit from a data center back in CONUS without caring that it is moving over an RF or laser link."

'Bout time!



www.abovetopsecret.com...


reply posted on 23-2-2004 @ 06:38 PM by madmartinez
really annoyed now after reading

www.atsnn.com...

such a class lookin machine that does the job should not be canceled.

8 billion christ ( soz if ur religious ) that machine scares the hell out of me and would probly do so to many countrys, but now they say move on to sumfin else why????? could of pumped that 8 bill in to my account and id be very happy
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