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Re: SV: Birds vs. Jets




On Sun, 22 Mar 2009, Tommy Tyrberg wrote:
It would have to be very robust, otherwise it would be much more
dangerous than the birds. Also it must not disturb the airstream
appreciably, jet engines being pretty sensitive to inlet turbulence.
Also consider how large it would have to be. You can pull a DC3 airframe
(minus wings and fins) through a modern jet-engine pod.
So, no it's not practical, though detachable grids have been used on
military aircraft to prevent accidents on ground.

You'd also have to consider the extra weight and effect on fuel economy.

Aerodynamically, the old SR71 had conical inlets, so thatmaspect of it
might pass ok...

-----Ursprungligt meddelande-----
Från: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] För Mark
Hallett
Skickat: den 20 mars 2009 21:28

Going back to a related issue-- medium-large birds getting sucked into
jet engine intakes-- would it not be possible to design an aerodynamic,
convex metal grid covering the intake that could deflect bird collisions
and yet withstand the force of the  engine's suction and not obstruct
it? Sort of like a steam locomotive's "cow catcher". --Mark