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Real Time Adaptive Feedforward Guidance for Entry Vehicles

Sagliano, Marco and Oehlschlägel, Thimo and Theil, Stephan and Mooij, Erwin (2015) Real Time Adaptive Feedforward Guidance for Entry Vehicles. In: Proceedings of the 3rd CEAS EuroGNC. 3rd CEAS EuroGNC, Specialist Conference on Guidance, Navigation & Control, 13-15 April 2015, Toulouse, France.

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Official URL: http://eurognc2015.onera.fr

Abstract

One of the most powerful analysis tools to deal with entry guidance problems is the possibility to formulate them as optimal control problems (OCPs). Environmental constraints, actuator limits, and strict requirements on the final conditions can be efficiently transcribed, resulting in a discrete, finite-dimension non-linear programmming (NLP) problem. However, NLP problems require a computational power, which often exceeds the vehicle’s onboard capabilities. Moreover, it is important to ensure that the nominal optimal solution can be adapted to the actual flight conditions, which can significantly differ from the nominal scenario. This paper proposes an approach based on multivariate interpolation to generate entry guidance solutions. The real-time capability is ensured in virtue of the lower CPU efforts required to execute the interpolation operation. The approach is here proposed for initial-conditions variations, but can in principle be applied to every mission parameter, which allows to find a corresponding optimal solution. Results have been generated for SHEFEX-3, an entry demonstrator vehicle scheduled to be launched in 2016.

Item URL in elib:https://elib.dlr.de/96778/
Document Type:Conference or Workshop Item (Speech)
Title:Real Time Adaptive Feedforward Guidance for Entry Vehicles
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Sagliano, MarcoDLRUNSPECIFIED
Oehlschlägel, ThimoThimo.Oehlschlaegel (at) dlr.deUNSPECIFIED
Theil, StephanStephan.Theil (at) dlr.deUNSPECIFIED
Mooij, Erwine.mooij (at) tudelft.nlUNSPECIFIED
Date:14 April 2015
Journal or Publication Title:Proceedings of the 3rd CEAS EuroGNC
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:entry guidance, adaptive feedforward guidance
Event Title:3rd CEAS EuroGNC, Specialist Conference on Guidance, Navigation & Control
Event Location:Toulouse, France
Event Type:international Conference
Event Dates:13-15 April 2015
Organizer:CEAS, ONERA, ENAC, ISAE Supaero
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Shefex III
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Navigation and Control Systems
Deposited By: Sagliano, Marco
Deposited On:25 Jun 2015 09:31
Last Modified:31 Jul 2019 19:53

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