i thought the french government had banned all photography around airports etc……are you finding that thats not being enforced?

re the wing lift………by the looks of the props in the above static images, i think you have up going air leaving the prop and passing across the right hand wing (rotates anti-clockwise from cockpit view?)

I would imagine that if you have the angle of attack just right, in the flare, you could get some energetic air passing over the right wing producing more lift (especially if it meets the leading edge at a positive angle), and also energetic air passing over the left wing, actually reducing lift if its vector is downwards.

with such a light wing loading, it would be fairly easy to make a difference.

of course if the prop rotates the other way, the above is rubbish!

I like the Auster, to my eye its a very ‘classical’ example of the british aviation industry.

coanda

gr8 images!

hmm I am not aware of the legal limit being 1.2. Is that an EASA requirement for large aircraft then? I’m not disputing it, I am just curious, because if the legal minimum limit for large aircraft is 1.2, then we could make lighter aircraft…….

coanda

indeed, you can not be in both the plastic and elastic regions of the stress/strain curve! Once somthing has been stretched (convert this into strain) above the elastic limit of the material it will never return to its original shpe and size.

Worth noting that the wing is probably still capable of carrying the design criteria. I would think that this event has shortened the fatigue life of the aircraft by some amount.

If there was no structural failure, or adequate repairs could be made to the structure, there would be no need to take the aircraft off the line.

I know they grow, and if they are growing, the material is going plastic, which is somthing we do not do today for good reasons.

As an engineering solution it does not make sense to build ‘slack’ into a fuselage and if it doesnt make sense it sets alarm bells ringing in sane engineers.

The only guys who really would know are the design team (not field engineers, or maintenance/repairs engineers) and they would probably have forgotten by now!! I wonder what kind of state their calcs are in??

however……….back to the topic……….

theoretically, you could use a wrinkled surface to channel waves in the direction you want, because there are interactions which send em waves travelling along surfaces, and these waves are bounded by edges. and a wrinkled surface may satisfy this condition.

Matt, i agree, composite parts with wrinkled surfaces are only really fit for the bin!

coanda

my mistake aerospacetech………