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What is the angle of incidence limiting?(a) Warning indication to the pilot during high angles of incidence(b) The minimum angle of attack that can be measured(c) Keeping angle of incidence under safety limits whilst maneuvering(d) Reducing the error that occurs in an angle of incidence indicatorThis question was posed to me by my school principal while I was bunking the class.The query is from Control Laws in FBW in division Fly by Wire Flight Control of Avionics

Answer»

Correct choice is (c) Keeping angle of INCIDENCE under safety limits whilst maneuvering

Easiest EXPLANATION: The incidence terms from the airstream sensors can be blended with the pitch rate error terms and the ‘gearings’ (or gain coefficients) of these terms adjusted as higher ANGLES of attack are approached. This enables the angle of incidence to be kept within the SAFE limits whilst maneuvering at high angles of incidence, i.e., the angle of incidence LIMITING.



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