7) a) What is the conventional sign of the following longitudinal stability derivative: Cma What happens...
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7) a) What is the conventional sign of the following longitudinal stability derivative: Cma What happens to these stability and control derivatives in the following cases: i) A canard is fitted to the aircraft. The canard has a fixed orientation with respect to the aircraft. All aircraft parameters remain the same. ii) The horizontal tail length 1 is doubled. Note that all other parameters may be assumed to remain unchanged. iii) The center of gravity is moved forward. All other aircraft parameters remain the same. b) What is the conventional sign of the following lateral stability derivative: C, What happens to these stability and control derivatives in the following cases: i) Increase of dihedral T. All other aircraft parameters remain the same. ii) Increase of wing sweep angle. All other aircraft parameters remain the same. iii) The horizontal tail length l is doubled. Note that all other parameters may be assumed to remain unchanged. Give your answer in terms of the following statements: more/less negative/positive or unchanged. Cm q Cn B Sign <0 >0 Case a Less neg 0 Case b More neg More pos or 0 Case c More neg More pos 7) a) What is the conventional sign of the following longitudinal stability derivative: Cma What happens to these stability and control derivatives in the following cases: i) A canard is fitted to the aircraft. The canard has a fixed orientation with respect to the aircraft. All aircraft parameters remain the same. ii) The horizontal tail length 1 is doubled. Note that all other parameters may be assumed to remain unchanged. iii) The center of gravity is moved forward. All other aircraft parameters remain the same. b) What is the conventional sign of the following lateral stability derivative: C, What happens to these stability and control derivatives in the following cases: i) Increase of dihedral T. All other aircraft parameters remain the same. ii) Increase of wing sweep angle. All other aircraft parameters remain the same. iii) The horizontal tail length l is doubled. Note that all other parameters may be assumed to remain unchanged. Give your answer in terms of the following statements: more/less negative/positive or unchanged. Cm q Cn B Sign <0 >0 Case a Less neg 0 Case b More neg More pos or 0 Case c More neg More pos
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Related Book For
Engineering Economy
ISBN: 978-0132554909
15th edition
Authors: William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
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