Aiaa 99-4160 Re-entry Trajectory Planning for a Reusable Launch Vehicle
نویسندگان
چکیده
The Shuttle's two-dimensional entry trajectory planning method is extended to threedimensions. Both angle of attack and angle of bank variations are used to control the entry trajectory. The trajectory planning is done with a third-order system of di erential equations using the drag and lateral accelerations as intermediate controls. The reducedorder planning problem is solved as an optimal control problem. The state and control variables not involved in the planning are computed in a second step.
منابع مشابه
Further Evaluation of an Adaptive Method for Launch Vehicle Flight Control
* Graduate Research Assistant. Student Member AIAA. † Professor. Fellow AIAA. ‡ Lockheed Martin Assistant Professor of Avionics Integration. Member AIAA. Future reusable launch vehicles must be designed to fly a wide spectrum of missions and survive numerous types of failures. The X-33 Reusable Launch Vehicle Technology Demonstrator is used as a simulation platform for testing a neural network-...
متن کاملApplication of Neural Network in Trajectory Planning of the Entry Vehicle for Variable Targets
A method for onboard generation of entry trajectory for variable targets is discussed. Conventional trajectory planning algorithms can only be used for the fixed terminal conditions without considering the variable targets. In case the vehicle needs to alert the entry trajectory due to damage or effectors failure, the entry guidance system must real-time design a feasible entry trajectory accor...
متن کاملAIAA 2000-1046 An Entry Flight Controls Analysis for a Reusable Launch Vehicle
The NASA Langley Research Center has been performing studies to address the feasibility of various single-stage to orbit concepts for use by NASA and the commercial launch industry to provide a lower cost access to space. Some work on the conceptual design of a typical lifting body concept vehicle, designated VentureStarTM has been conducted in cooperation with the Lockheed Martin Skunk Works. ...
متن کاملOptimal Trajectory Reconfiguration and Retargeting for a Reusable Launch Vehicle
Autonomous reusable launch vehicles (RLV) are being pursued as low-cost alternatives to expendable launch vehicles and the Shuttle. The employment of autonomous, reusable launch vehicles requires additional guidance and control robustness to fulfill the role of an adaptive human pilot, in the event of failures or unanticipated conditions. The guidance and control of these vehicles mandate new g...
متن کاملSelection of Favorite Reusable Launch Vehicle Concepts by using the Method of Pairwise Comparison
The contribution of this paper to the space transportation system field is to select promising Reusable Launch Vehicle (RLV) concepts by using a formal evaluation procedure. The vehicle system is divided into design features. Every design feature can have alternative characteristics. All combinations of design features and characteristics are compared pairwise with each other. The innovation an...
متن کامل