Answered: The design of an aircraft fuselage skin…

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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Question

The design of an aircraft fuselage skin requires sufficient strength and stiffness in both the longitudinal and hoop direction. Based on this information alone, which of the following material options would be the best option?

A) Aluminum 2024-T3

B) Unidirectional glass/epoxy laminate

Which of the statements below on the Euler buckling load is correct?

A) If the axial load increases, the Euler buckling load will go up.

B) If the axial load decreases, the Euler buckling load will go up.

C) If the lateral load increases, the Euler buckling load will go up.

D) If the lateral load decreases, the Euler buckling load will go up.

Is the following statement true or false: A structure does not need to break (ie: fracture) in order to fail.

Select whether the following statement is true or false: Structural safety is solely the responsibility of the aircraft manufacturer and the airworthiness authorities.

Select whether the following statement is true or false: Damage tolerance is the structural ability to sustain environmental degradation to the extent that economically acceptable maintenance programs can control it

Select whether the following statement is true or false: If a structural component is not inspectable, it can still be certified according to one of the available design philosophies.

Why is the stress concentration factor, Kt, a meaningless parameter for fatigue cracks

A) The stress in front of a crack is lower than the nominal stress in the structure, leading to a stress reduction factor.

B) Cracks are sharp (have a notch root radius of approximately zero) meaning the stress concentration factor approaches infinity.

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