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[SEAOC] Re: [SEAOC] aircraft on bridges[Subject Prev][Subject Next][Thread Prev][Thread Next]
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- Subject: [SEAOC] Re: [SEAOC] aircraft on bridges
- From: quinnair(--nospam--at)ix.netcom.com (Patrick F. Quinn )
- Date: Fri, 21 Jun 1996 18:37:23 -0700
As a pilot, I believe there are other considerations you should include in your load calculations. 1. At the moment of touchdown, we are trained to achieve a full aerodynamic stall by increasing the angle of attack; therefore there is no lift from the wings. 2. The landing gear is designed to handle impact with the runway at a vertical descent rate of 500 FPM (on my airplane)and not every landing is a "greaser". Landings are basically controlled collisions with the ground. 3. Many aircraft have a higher takeoff allowable weight than allowable landing weight, presumably because the possible impact load of the landing on the airframe. 4. Runway pavement design thickness is usually greatest at the end of the runway where the aircraft is accelerating from a stop, because there is no lift below stall speed and the aircraft is fully fueled and fully loaded. You may want to obtain an Army/Air Force manual on Pavements and Airfields for more on aircraft ground loads. At any rate do a thorough job, I may be depending on you. ...
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