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Bell-Boeing's MV-22 Osprey heads to Iraq
The MV-22 will have serve a seven month tour of duty in Iraq

Bell-Boeing's V-22 Osprey first took to the air nearly 20 years ago and the road to active duty has been a long one. When DailyTech last visited the tilt-rotor aircraft, the Air Force's CV-22 Osprey was criticized for its "poor aircraft availability" and "marginal operational availability" during desert testing at Kirkland Air Force Base.

"Frequent part and system failures, limited supply support, and high false alarm rates in the built-in diagnostic systems caused frequent flight delays and an excessive maintenance workload," claimed the report which was released earlier this year.

"This produces a maintenance and support burden that the Marines really can’t afford. All of the reliability problems that they continue to have here in the [United] States -- it’s going to drive them crazy overseas," said Philip Coyle, senior advisor for the Center for Defense Information.

Despite the troubles, the U.S. Marines will be deploying seven of its similar MV-22 Ospreys to Iraq in September. The Marines are hoping that the Osprey’s speed will allow it to quickly transport troops and make it less of a target for insurgents than slower, traditional helicopters.

"It is our fervent feeling that this aircraft is the most capable, survivable aircraft that we carry our most important weapons system in, which is the Marine or rifleman," said Lt. Gen. John Castellaw, the deputy commandant for aviation for the Marines. "If you've ever gone rabbit hunting, you know that it's harder to shoot a rabbit that's running than the one that's sitting still."

The push for the Osprey to enter regular military service has been a long time coming. In 2007 alone, there have been six crashes involving U.S. helicopters in Iraq. The Osprey's enviable speed (top speed 316MPH), ability to take-off and land like a helicopter and an operating range that is three to five times that of traditional helicopters should make it a great workhorse during its seven month deployment.

The V-22 Osprey is destined to replace the Marines' CH-46 Sky King by 2018. When compared to the CH-46, the Osprey has a range that is three times farther and has six to seven times the survivability in the field.

The tilt-rotor aircraft has been in development for over 20 years at a cost of over $20 billion USD.



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RE: biggest waste of taxpayer's money EVER
By DBRfreak on 4/16/2007 2:14:10 PM , Rating: 2
First, the V22 has a drive system which requires the failure of both turbines before the props lose power. Second, the wing of a V22 actually does provide enough lift to allow the craft to glide a bit.


RE: biggest waste of taxpayer's money EVER
By Jafo79 on 4/16/2007 11:38:54 PM , Rating: 2
You're right in that there is a "synch shaft" that provides redundancy should 1 engine fail the other prop still gets power. You're wrong about the glide, see here all you non-believers::
http://www.g2mil.com/V-22safety.htm


RE: biggest waste of taxpayer's money EVER
By masher2 (blog) on 4/17/2007 7:13:11 AM , Rating: 2
> "You're wrong about the glide, see here all you non-believers: (link)..."

I read your link and it doesn't attempt to refute the glide landing capability of the V-22. In fact, it seems to explicitly support my earlier remark, in that it says the V-22 cannot conduct a survivable emergency landing "with all engines inoperative" when its in helicopter mode and below 2000 feet.

In any case, I wouldn't put too much weight into an article written by an anonymous person, on a website run by a man with the mission goal of exposing "important issues [that] are ignored by editors fearful of upsetting their corporate advertisers or government sponsors"


RE: biggest waste of taxpayer's money EVER
By Jafo79 on 4/17/2007 1:11:41 PM , Rating: 2
It doesn't? I am talking about when the contraption is in helicopter mode and there is dual engine failure.
quote:
The single autorotation test in V-22 also demonstrated that the attempt to recover from autorotation to a safe landing by using stored rotor energy to arrest the rate of descent failed markedly. The test data indicate that the aircraft would have impacted the ground at a rate of descent of about 3700 ft/min (61.7 ft/sec) ¾ a fatal rate-of-descent. Authoritative proponents, e.g., the NASA Review Team, have argued that autorotation is not a needed capability for the V-22 due to the low probability of a two-engine failure. My analysis of Navy safety data shows that the Navy/USMC experiences a dual engine failure in a helicopter about once every 3 to 4 years due to fuel contamination onboard a ship. Historically, such accidents have usually been survivable because the helicopter autorotates into the water and the crew and passengers quickly scramble out. If such an event were to occur in V-22, it will probably be fatal to crew and passengers because the aircraft will not smoothly enter autorotation, but most probably depart from controlled flight, and because the cabin is too cramped for a rapid egress.


By masher2 (blog) on 4/17/2007 1:34:49 PM , Rating: 2
From your own link:
quote:
From higher altitudes, or when operating in airplane it is generally believed that V-22 is capable of conducting a survivable, all engines-inoperative emergency landing...
A glide landing, in other words. Except-- as we've already said many times-- when in helo mode AND at a low altitude AND experiences loss of both engines.


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