Minimum fuel rocket maneuvers in horizontal flight.

Near Minimum Fuel Maneuvers for Multi Spacecraft Interferometric Imaging in Near Earth Orbit

In this article a methodology to obtain near-minimum fuel maneuvers for space-based interferometric imaging systems located in near-earth orbits, subject to the Clohessy-Wiltshire equations, is proposed. The methodology consists of a hierarchical controller consisting of higher level Non Linear Programming problem and a lower level Linear Quadratic Regulator. The solutions are obtained with the...

Fuel/Time Optimal Control of Spacecraft Maneuvers

which clearly reduces to the vacuum case deŽ ned by Eq. (3) as ̄ ! 0. The velocity- ight-path-angle proŽ le is shown in Fig. 2 for a range of drag parameters ̄ . It can be seen that as the effect of air drag increases, the trajectory curves more quickly toward the local vertical.Because the effect of drag is to increasethe effectivethrustweight ratio of the vehicle, the descentmaneuvermay be com...

Mathematical Models for Human Pilot Maneuvers in Aircraft Flight Simulation

Mathematical models are presented in this paper to describe human maneuvers for aircraft flight simulation. Input parameters for the human pilot model (HPM), such as the course deviation indicator (CDI) and the heading change, are defined for the model, and are related mathematically to those in the proportional-integral-derivative (PID) controller for automatic control. Similarities are discus...

RTDs in Australia: expensive designer drinks or cheap rocket fuel?

INTRODUCTION AND AIMS The ready-to-drink (RTD) market is growing rapidly, and this product category has been shown to be particularly appealing to young drinkers. The purpose of this study was to identify and describe the range and availability of RTDs available in New South Wales (NSW) (including metropolitan, regional and rural areas), with a particular focus on the variations in alcohol cont...

Minimum Fuel Trajectory in a 3/ D Time Scheduled Climb