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Guidance Command Generation and Nonlinear Dynamic Inversion Control for Reusable Launch Vehicles

Acquatella B., Paul and Briese, Lale Evrim and Schnepper, Klaus (2018) Guidance Command Generation and Nonlinear Dynamic Inversion Control for Reusable Launch Vehicles. In: Proceedings of the International Astronautical Congress, IAC. 69th International Astronautical Congress, 1-5 October 2018, Bremen, Germany.

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Official URL: https://iafastro.directory/iac/proceedings/IAC-18/

Abstract

Future launch vehicle concepts and technologies for expendable and reusable launch vehicles are currently investigated by the DLR research projects Akira and X-tras. In particular, the winged Liquid Fly-back Booster concept Lfbb based on an LOX/LH2 propellant combination for vertical takeoff and vertical landing (VTVL), as well as the delta-winged horizontal takeoff and horizontal landing (HTHL) concept Aurora based on an LOX/Kerosene propellant combination are considered in these projects. Because of the complexity and risks involved in on-line trajectory optimization, off-line reference trajectories are still considered important for tracking purposes. In that sense, the goal of this paper is to investigate an off-line and general-purpose guidance and control (G&C) architecture for preliminary studies of reusable launch vehicles. This is done by using trajectory optimization combined with Modelica models for the generation of optimal guidance commands, and then trajectory tracking is performed by means of inner-loop feedback controls in terms of nonlinear dynamic inversion with prescribed desired dynamics. We showcase the advantages of this baseline G&C architecture in terms of early stability and controllability aspects during the preliminary design studies of an example configuration of a reusable launch vehicle investigated in the context of the research projects above mentioned.

Item URL in elib:https://elib.dlr.de/123144/
Document Type:Conference or Workshop Item (Lecture)
Title:Guidance Command Generation and Nonlinear Dynamic Inversion Control for Reusable Launch Vehicles
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Acquatella B., Paulpaul.acquatella (at) dlr.deUNSPECIFIED
Briese, Lale EvrimLale.Briese (at) dlr.deUNSPECIFIED
Schnepper, KlausKlaus.Schnepper (at) dlr.deUNSPECIFIED
Date:October 2018
Journal or Publication Title:Proceedings of the International Astronautical Congress, IAC
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Status:Published
Keywords:Trajectory optimization; Guidance; Nonlinear control; Reusable space launchers
Event Title:69th International Astronautical Congress
Event Location:Bremen, Germany
Event Type:international Conference
Event Dates:1-5 October 2018
Organizer:International Astronautical Federation
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):Proj RLV-Schlüsseltechnologien, R - Projekt X-TRAS
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Space System Dynamics
Institute of System Dynamics and Control > Aircraft System Dynamics
Deposited By: Acquatella B., Paul
Deposited On:19 Nov 2018 10:29
Last Modified:16 Jul 2019 13:16

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