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Assignment 3 V2_AERO 410.pdf - AERO 410 - DESIGN AND...

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1 V2AERO 410 - DESIGN AND CERTIFICATION PROCESS IN AEROSPACEWinter 2020Assignment 3 V2For aircraft designed to the current FAR Part 25 requirement the three-wheel braked roll case(FAR 25.493(b)(1)) usually is the most critical for the forward fuselage in up (positive) bending.Under this condition, the forward fuselage structure must withstand the up load and bendingfrom the nose landing gear during aircraft taxiing with a constant (steady) application of mainlanding gear brakes (“braked roll” condition). The nose gear vertical reaction Consists of theaircraft weight and the added nose down force caused by steady braking. Account for theadditional dynamic loads of the nose gear and fuselage caused by the initial pitching motion ofthe aircraft due to sudden application of the main landing gear brakes.The nose gear vertical dynamic reaction may be determined as follows:where:VN= Nose gearvertical reactionWT= Maximum aircraft take-off weightA = Distance between the aircraft C.G. and the nose wheel ground contact point
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Tags
Force, Brake, 1 g, Landing, aircraft data

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