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Prevent bird strike | |||||||||||||||||
"The Federal Aviation Administration estimates the problem costs US aviation 600 million dollars annually and has resulted in 195 worldwide deaths since 1988. Estimating that 80% of bird strikes are unreported, there were 4,300 bird strikes listed by the United States Air Force and 5,900 by US civil aircraft in 2003". The actual solution for bird aircraft strike hazard is not focus in the plane. Kind of solutions are: "some approaches try to scare away the birds using frightening devices, for example sounds, lights, pyrotechnics, radio-controlled airplanes, decoy animals/corpses, lasers, etc". A solution that I propose is to built a curved funnel before the turbines that it can be constructe of several materials. I think it can be located near the cockpite, with a safety length from the engine´s airinflow. The device must have the same projection straight line of the engines. So if a bird is flying in the same projected straight line of the engine, it will come inside the curved funnel and the curved will permit to throw the bird far away from the plane. This apparatus will prevent objects to come inside the turbine. This apparatus can be unfolded at safety heights.
megozcue, Jun 12 2007
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Wouldn't the same effect that redirects the bird also redirect the air flow.? If so, the efficiency of the engine would be compromised.
Yes, but the funnel could be design not stop airflow but stop or redirect a bird.
You will have to do a better job of explaining how such a device blocks birds and not air flow. Engineers have been working on how to bird-proof jet engines for years without compromising the massive airflow to the engine or the lifting ability of the wings..
This is off the top of my head; I haven't put any real effort into this idea.
Any restriction to airflow would probably reduce engine efficiency. However, a vortex will throw solids to the outside of the vortex while letting airflow pass.
Could a vortex be created through flight surfaces in front of the engine to reject solids, while increasing engine efficiency in some way? Perhaps pre-compressing the air somewhat before entering the turbine.
I suspect that because commercial airliners are traveling at about 500 mph, that a vortex might approach supersonic speeds and cause problems. But smaller aircraft fly at speeds between 85 mph and 350 mph.
As I said, this is flippant rant. Does anyone have some aerodynamic engineering background to reasonably speak to this museful idea?
I think I couldn´t exposed my idea clearly. This apparatus, could be far away from the engines. I was thinking it could be located near de cockpit. I think it is around 30-40 feets long. I do not know if that distance makes engines inefficent. It could be design so air could pass thru, like a net. And it can be folded a safety heights.