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The trailing vortex wake left behind by an airplane can be a safety hazard to following aircraft as illustrated in Figure P2.19. The most

 

 


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The trailing vortex wake left behind by an airplane can be a safety hazard to following aircraft as illustrated in Figure P2.19. The most likely place to encounter the wake of another aircraft is in the vicinity of the airport during takeoff or landing. To minimize References 95 From the simple analysis presented here it is clear that the vortex strength is proportional to the weight of the generating aircraft and inversely proportional to its speed. Therefore large heavy transports flying at approach or takeoff speeds will create the strongest wakes and the greatest hazard to following aircraft. Wake vortices decay slowly in calm atmospheric conditions. Because the wake vortices decay very slowly in a calm atmosphere we will neglect vortex decay in this problem. Develop an expression for estimating the roll moment induced on an air- plane wing when the wing is centered in the vortex core of another aircraft's trailing vortex wake.

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