Optimal Climbing Trajectories of Hypersonic Aircraft based on Direct Methods of Flight Dynamics

M.A. Kiselev , A.Yu. Chekin , Ya.V. Moroshkin

DOI Number XXX-YYY-ZZZ

Conference Number HiSST2018_37001100

This paper shows the results of research for finding optimal climbing for reaching cruise flight of hypersonic aircraft. The problem to find optimal control has two cases. In the first case the optimization criterion is fuel consumption mass. In the second one it’s a time to achieve the cruise speed. The research object is a hypersonic aircraft with 300 tones take-off weight and maximum speed of 6 Machs. A propulsion system consists of 6 turbo ramjets. As fuel the engines use kerosene and hydrogen. The problem of optimal control is solved by modifying the direct variational method, which has been developed by one of the authors. The method provides high accuracy of the trajectory using cubic splines interpolation. The amount of splines is determined in each case on the basis of the convergence of the solution. In addition, the method provides the limitations of the magnitude and rate of vertical g-force and roll.

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direct methods, flight dynamics, HiSST 2018, hypersonic aircraft., Trajectory Optimization

In Categories: HiSST 2018, Hypersonic Aerodynamics, Hypersonic Flight Dynamics, Operations and Environment

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