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L/4 We L 13 kN/m L/4 Ww FT 30° MT t H

L/4 We L 13 kN/m L/4 Ww FT 30° MT t H

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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3) The force, FT = 1 kN, and moment, MT = 0.5 kN-m, at the tip are caused by a wing tip vortex
and a winglet, not shown. L = 12 m and the spar has an elastic modulus of E = 70 GPa and a
Poisson’s ratio of n = 0.33. The mass of the wing is 4000 kg, and the weight of the engine is 107
kN. Use 9.8 m/s 2 for the acceleration due to gravity. b = 0.4 m, d =0.5 m , t =0.1 m.
a) The aerodynamic center is 0.1 m from the y axis (neutral axis). Calculate the
twist angle caused by the lift force. 
b) Calculate the reactions at the fixed end. 
c) Assume the engine applies a torque around the x – axis of the spar of 100 kN-m,
calculate the angular delfection of the wing at x = 3 m due to the engine.
L/4 We L 13 kN/m L/4 Ww FT 30° MT t H
Transcribed Image Text:L/4 We L 13 kN/m L/4 Ww FT 30° MT t H
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