Question

. (1) Transfer functions, FVT and stability. The SWORD missile is an interceptor that employs thrusters thruster force produces an angle of attack, α, that in turn produces a normal force near the nose for control. The Normal Force, N Thruster Force, F Velocity C-E A linearized equation relating the angle-of-attack to the thruster force is mV The parameter values for the SWORD missile are: N,-3893 lb/rad. 1-1.79 slugs-ft2 m=0.77slugs V-2789ft./sec. D-0.1 ft. L-1.44ft. The thruster was sized to deliver 20 pounds of force. Assume the thrust is a step input, so F(t) 20 U,l(t) lb. a. Find the transfer function b. Use the FVT to find the steady-state value of α,ass- c. Find the missile's natural frequency, On a(s) F(s) d. The steady-state normal force is Nss and Nss-Na as," Find Nss. Use the system poles to determine if the missile is stable. e.

Answer 1

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