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Investigation of flight dynamics and effects of rotational degrees of freedom on the flight performance of asymmetric space transportation systems based on the SpaceLiner 7 concept

Krummen, Sven (2016) Investigation of flight dynamics and effects of rotational degrees of freedom on the flight performance of asymmetric space transportation systems based on the SpaceLiner 7 concept. Master's. DLR-Interner Bericht. SART TN-010/2016. (Unpublished)

Full text not available from this repository.

Abstract

The SpaceLiner 7-3 is a concept for a suborbital spacecraft, which is capable of transporting 50 passengers over ultra-long-haul distances. Since 2005, this concept is has been researched by the German Aerospace Centre (DLR). This study analyzes the flight dynamics of the vehicle during its ascent flight of the reference mission from Australia to Europe. Key point of this study is the development of a flight dynamics simulation of the SpaceLiner, which can determine the evolution of all rotational and translational states of the vehicle. For the flight dynamics simulation of the SpaceLiner, the model definition of the vehicle has been extended from previous studies. Estimations of the vehicle’s moment of inertia are conducted, as well as a draining model of the propellant tanks is determined. Also the aerodynamic database of the SpaceLiner is extended by lateral and dynamic derivatives. In order to determine the control deflections of the thrust vector control during simulation, a flight control model for the SpaceLiner Vehicle is developed. The control design process for this system is automated by the relay auto-tuning method. The flight dynamics model of the SpaceLiner, as well as the corresponding flight control model, is included into a newly developed 6 DOF trajectory simulation, implemented in Simulink. This simulation features numerically robust calculations of the vehicle’s state vector in arbitrary flight conditions. The validity of the implemented simulation is proven in a cross-validation test against the commercial tool ASTOS. Based on the developed flight dynamics simulation, analyses of the flight dynamic characteristics of the SpaceLiner are performed. The aerodynamic stability and trimmability of the vehicle is determined for a nominal ascent flight. The nominal ascent trajectory is also simulated and deviations in respect to a 3 DOF reference trajectory are identified. Furthermore, first analyses of ascent trajectories under wind loads are conducted. Based on the simulation results, the feasibility of the implemented thrust vector control is reviewed.

Item URL in elib:https://elib.dlr.de/110790/
Document Type:Monograph (DLR-Interner Bericht, Master's)
Additional Information:das .pdf ist auf Anfrage bei RY-SRT erhältlich!
Title:Investigation of flight dynamics and effects of rotational degrees of freedom on the flight performance of asymmetric space transportation systems based on the SpaceLiner 7 concept
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Krummen, Svensven.krummen (at) dlr.deUNSPECIFIED
Date:12 September 2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Unpublished
Keywords:SpaceLiner, Flight Dynamics, 6 DOF trajectory Simulation, TRACE, Thrust Vector Control
Institution:DLR
Department:RY-SRT
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 - Raumfahrzeugsysteme - Systemanalyse Raumtransport
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Space Launcher Systems Analysis
Deposited By: Vormschlag, Nele Marei
Deposited On:19 Jan 2017 11:33
Last Modified:19 Jan 2017 11:33

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