V-22 on way to air show lands with engine trouble
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V-22 on way to air show lands with engine trouble
Tilt-rotor's compressor stall may not be serious, aircraft experts say
WASHINGTON – One of two Marine Corps V-22 Osprey tilt-rotor aircraft on their way to England for international air shows landed in Iceland instead Monday after suffering compressor stalls in an engine.
The V-22 Osprey, shown here in flight over the North Carolina coast last year, was nearly canceled after two Osprey crashes in 2000 left 23 Marines dead. The incident was an unwelcome start to a trip the Marine Corps views as a demonstration of the helicopter-airplane hybrid's ability to "self-deploy" overseas by refueling in midair and a chance to prove to an international audience that the Osprey's problems are behind it.
The V-22, built by Bell Helicopter Textron Inc. of Fort Worth and Boeing Co.'s helicopter division, was nearly canceled after two Osprey crashes in 2000 left 23 Marines dead.
On Monday, the Marine Corps crew of three made the precautionary landing at Keflavik about four hours into a scheduled nine-hour flight from Goose Bay, Canada, to Farnborough, England, Marine spokesman Lt. Col. Scott Fazekas said.
A spare Rolls-Royce AE1107C turbofan engine will be flown to Iceland and swapped with the engine that suffered the stalls, he said. The engine was in England with mechanics sent to maintain the V-22s during their appearances at two air shows this weekend and next week.
"They're going to replace the engine there on site," Lt. Col. Fazekas said. "A compressor stall doesn't necessarily require an engine replacement; they just decided to do that in this case."
The V-22s are to perform this weekend at the Royal International Air Tattoo show in Fairford, England, and next week at the Farnborough International Airshow, the year's major aerospace trade fair.
"It's not the way you want to start a deployment tour, but on the other hand, this sounds like a low-tech issue," said aerospace industry analyst Richard Aboulafia of the Teal Group, a Washington-area consulting firm.
Bell spokesman Bob Leder said compressor stalls in such engines were "really nothing."
"These kind of engine problems are very normal, not only within military aircraft, but in commercial aircraft," he said.
Hans Weber, president of the California-based technology management consultancy Tecop International Inc., said compressor stalls "can be harmless, but they can also mean there is internal damage to the engine."
Mr. Weber recalled that the pilot of a British Airways 747 that left Los Angeles last year with a load of passengers shut down one of his four engines because of compressor stalls and flew on to England.
Given the V-22's troubled history, "We're all very sensitized to worry about problems with the Osprey, sure," Mr. Weber said. "But this might not be something to worry about. We have to see what ultimately they find out about what caused it."
WASHINGTON – One of two Marine Corps V-22 Osprey tilt-rotor aircraft on their way to England for international air shows landed in Iceland instead Monday after suffering compressor stalls in an engine.
The V-22 Osprey, shown here in flight over the North Carolina coast last year, was nearly canceled after two Osprey crashes in 2000 left 23 Marines dead. The incident was an unwelcome start to a trip the Marine Corps views as a demonstration of the helicopter-airplane hybrid's ability to "self-deploy" overseas by refueling in midair and a chance to prove to an international audience that the Osprey's problems are behind it.
The V-22, built by Bell Helicopter Textron Inc. of Fort Worth and Boeing Co.'s helicopter division, was nearly canceled after two Osprey crashes in 2000 left 23 Marines dead.
On Monday, the Marine Corps crew of three made the precautionary landing at Keflavik about four hours into a scheduled nine-hour flight from Goose Bay, Canada, to Farnborough, England, Marine spokesman Lt. Col. Scott Fazekas said.
A spare Rolls-Royce AE1107C turbofan engine will be flown to Iceland and swapped with the engine that suffered the stalls, he said. The engine was in England with mechanics sent to maintain the V-22s during their appearances at two air shows this weekend and next week.
"They're going to replace the engine there on site," Lt. Col. Fazekas said. "A compressor stall doesn't necessarily require an engine replacement; they just decided to do that in this case."
The V-22s are to perform this weekend at the Royal International Air Tattoo show in Fairford, England, and next week at the Farnborough International Airshow, the year's major aerospace trade fair.
"It's not the way you want to start a deployment tour, but on the other hand, this sounds like a low-tech issue," said aerospace industry analyst Richard Aboulafia of the Teal Group, a Washington-area consulting firm.
Bell spokesman Bob Leder said compressor stalls in such engines were "really nothing."
"These kind of engine problems are very normal, not only within military aircraft, but in commercial aircraft," he said.
Hans Weber, president of the California-based technology management consultancy Tecop International Inc., said compressor stalls "can be harmless, but they can also mean there is internal damage to the engine."
Mr. Weber recalled that the pilot of a British Airways 747 that left Los Angeles last year with a load of passengers shut down one of his four engines because of compressor stalls and flew on to England.
Given the V-22's troubled history, "We're all very sensitized to worry about problems with the Osprey, sure," Mr. Weber said. "But this might not be something to worry about. We have to see what ultimately they find out about what caused it."
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Well, they are both at Fairford now. In normal aircraft mode, they look like an out of control windfarm. Great to see them here though and fascinating too.
Conan
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I almost flew right into one at Arlington when I was learning to fly 
at least that's what it felt like at the time
at least that's what it felt like at the time
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Ospreys over London
Would these be the two Ospreys which were bearing up and down the Thames between Westminster and Tower Bridge this evening. Alternatel in 'hover mode' and 'fixed wing' mode? (I'm sure there are better descriptions for that...)
Hade an extraordinary noise!
Hade an extraordinary noise!
Osprey (2006): 24 troops or 9000 kg of cargo at 500 km/h for 200 km.
Rotodyne (1962): 60 troops or 6700 kg of cargo at 370 km/h for 700 km.
Hmmm.......
Rotodyne (1962): 60 troops or 6700 kg of cargo at 370 km/h for 700 km.
Hmmm.......
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Beagle, I have been expounding on just the same theme this afternoon. Thing is that Rotodyne would have done it with no software, no computers and possibly fitted out by Armitage Shanks. Another great British project buggered by circumstance. Allow me to retreat to "Old farts corner"
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Originally Posted by Footless Halls
Would these be the two Ospreys which were bearing up and down the Thames between Westminster and Tower Bridge this evening. Alternatel in 'hover mode' and 'fixed wing' mode? (I'm sure there are better descriptions for that...)
Hade an extraordinary noise!
Hade an extraordinary noise!
Originally Posted by Conan the Librarian
Beagle, I have been expounding on just the same theme this afternoon. Thing is that Rotodyne would have done it with no software, no computers and possibly fitted out by Armitage Shanks. Another great British project buggered by circumstance. Allow me to retreat to "Old farts corner"
It was one hell of a noisy beast though...........
The Rotodyne was only noisy when the early model tipjets were running. By the time of cancellation they were well on the way to solving the problem. Mind you, the turboprops were as noisy as most of that era.
It could also fly in autogyro mode almost like a conventional aeroplane. Amazing that it did all that with cogs, pulleys and suitable systems of levers long before the age of computers!
Too much glue in the rotor head knackered my Airfix one in 1962 though!
It could also fly in autogyro mode almost like a conventional aeroplane. Amazing that it did all that with cogs, pulleys and suitable systems of levers long before the age of computers!
Too much glue in the rotor head knackered my Airfix one in 1962 though!
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Wasn't the Belvedere a first too?
No, that was the Bristol 173. The Belvedere was the later Type 192.
Had an Airfix one of those too!
In the '50s, most little lads were 'air-minded' enough to know such things, I'll have you know!
Had an Airfix one of those too!
In the '50s, most little lads were 'air-minded' enough to know such things, I'll have you know!
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So was the Bristol 173 the first 'Chinook' type helicopter, did it beat the 'Flying Banana'?