JSF and A400M at risk?
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for Lyneham Lad
Seattlepi.com has a video of the A400M doing its "full four" engine runs, and also mentions that, according to Flightblogger, the "word on the street" is that first flight could be on Monday 25/11 ...
AND ...
The sound on the video even at minimum volume goes straight to the sternum ...
AND ...
The sound on the video even at minimum volume goes straight to the sternum ...
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This is the video. I thought it might have been this week too or by next Monday, but the A400M still needs to do high-speed taxi trials and an aborted take-off first, apparantely.
YouTube - A400 Essais Moteurs
YouTube - A400 Essais Moteurs
Hola, TT!
Good to see that your aircraft is about to launch - hope all is well with you!
Still managing to track down a vindaloo outlet or two?
Good to see that your aircraft is about to launch - hope all is well with you!
Still managing to track down a vindaloo outlet or two?
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Direction of Rotation?
Probably a v/silly question from an ex Herc member of SODC(not AT) fraternity but are not the engines supposed to turn in the same direction? Video shows 1&3 going anticlock and 2&4 clockwise??
Mind you, even after 30 odd years on Albert I still can't remember which way those went but I think they were all the same direction.
But then I didn't have a window seat.
XFT
Mind you, even after 30 odd years on Albert I still can't remember which way those went but I think they were all the same direction.
But then I didn't have a window seat.
XFT
No, the A400M propeller rotation directions are as you observed - they do not all rotate in the same direction.
I understand that this has positive benefits regarding acoustic fatigue effects on the airframe and confers significant aerodynamic advantages.
Another advanced Airbus design feature!
I understand that this has positive benefits regarding acoustic fatigue effects on the airframe and confers significant aerodynamic advantages.
Another advanced Airbus design feature!
Champagne anyone...?
Tested on the P-38 back in the 1940-41 era
The A400M props rotate towards each other, as BEags says, to reduce interference vibration and noise and to reduce the yawing thrust effects of assymetric flight.
That's the term I've also heard, TT.
Doubtless when StopStart becomes an A400M Staneval examiner, one of his Cat questions will be to explain the advantages of 'down between' rather than 'up between'?
Doubtless when StopStart becomes an A400M Staneval examiner, one of his Cat questions will be to explain the advantages of 'down between' rather than 'up between'?
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I half remember asking this before but can’t remember what the answer was: doesn’t DBE rotation reinforce the formation of tip vortices on the mainplanes? Doesn’t that have a drag penalty?
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Reuters - Price rise may be only option To Save A400
In todays Reuters ( Link Here );
Basically, article states that price per unit may need to rise, and for deliveries in any given period to be reduced from current targets. Suggestions of a possible 25% unit cost increase. It would also appear that Germany and not the UK are the sticking point with any potential contract changes.
Article raises further interesting information. Well worth a peruse.
Hval
Basically, article states that price per unit may need to rise, and for deliveries in any given period to be reduced from current targets. Suggestions of a possible 25% unit cost increase. It would also appear that Germany and not the UK are the sticking point with any potential contract changes.
Article raises further interesting information. Well worth a peruse.
Hval
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"They do not rotate in the same direction"
But does this mean that in the event of an engine change down route there is a possibility of getting the wrong one sent out?
But does this mean that in the event of an engine change down route there is a possibility of getting the wrong one sent out?
Champagne anyone...?
But does this mean that in the event of an engine change down route there is a possibility of getting the wrong one sent out?
PS. Same engines, different gearboxes. Not sure if you can do an engine change "down route" and swap gearboxes across or if the engine would need to ship out with the correct gearbox on...
Last edited by StopStart; 26th Nov 2009 at 10:53. Reason: Interruption by Potter of The Auxilliaries.
But does this mean that in the event of an engine change down route there is a possibility of getting the wrong one sent out?
After ensuring that 'right hand side, co-pilot's windscreen' had been requested through the supply system, guess what turned up..... Still, a couple more days of CHING!! in the USA whilst the Eng and Supply folks back in the UK sent the correct one wasn't unwelcome.
Getting the wrong windscreen wasn't anything like the surprise a V-bomber crew chief once had when he opened the boxed up PFCU motor he'd been waiting to be delivered to Offutt - only to find it actually contained a Bedford 4-tonner crankshaft..
Of course being a high quality Airbus product, the likelihood of engine or prop failure is somewhat remote....
But I'd put money on someone sending the wrong prop one day in the future!
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The MoD loggies will get it exactly correct, so long as the engine unit with the CW gearbox has a different NATO Stock Number to the one with the ACW gearbox (as it should) and those “down the line” demand the correct one. 