Failure of the reentry vehicle to separate from the third stage changed the reentry trajectory
, reducing the angle of attack at the point of maximum heating.
Since the plan currently involves attaching a rocket to control HST's reentry trajectory
, why not use that rocket to boost it to a higher orbit instead, maybe a thousand kilometers high, where it would represent little danger to other satellites or manned missions and where it could wait in relative safety until the technology to bring it back to Earth in one piece becomes available?
Reentry trajectory optimization usually needs to consider multiple performance indicators.
Reentry trajectory design must consider the influence of aerodynamic thermal protection system (TPS).
The horizontal aerodynamic load constraint of HGV reentry is not serious, so reentry trajectory design mainly considers vertical aerodynamic load [n.
Previous researches in reentry trajectory optimization are summarized as follows.
The results show that the new method not only significantly improves the computational efficiency of trajectory optimization since using fewer nodes will achieve a higher accuracy for the steady glide reentry trajectory but also has an extensive applicability in considering more final constraints even with the bank reversal.
Alighanbari, "Particle swarm optimization applied to spacecraft reentry trajectory," Journal of Guidance, Control, and Dynamics, vol.
The European ferry undocked on 28 October at 08:55 GMT (09:55 CET) and manoeuvred itself into a safe reentry trajectory
about 100 km below the Station.
Abrahamson, Boost through Reentry Trajectory
Planning for Maneuvering Reentry Vehicles, Massachusetts Institute of Technology, 2007.