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Evaluation of Future Ariane Reusable VTOL Booster stages

Dumont, Etienne and Stappert, Sven and Ecker, Tobias and Wilken, Jascha and Karl, Sebastian and Krummen, Sven and Sippel, Martin (2017) Evaluation of Future Ariane Reusable VTOL Booster stages. In: Proceedings of the International Astronautical Congress, IAC. 68th International Astronautical Congress, 25-29 September 2017, Adelaide, Australia.

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Abstract

Reusability is anticipated to strongly impact the launch service market if sufficient reliability and low refurbishment costs can be achieved. DLR is performing an extensive study on return methods for a reusable booster stage for a future launch vehicle. The present study focuses on the vertical take-off and vertical landing (VTOL) method. First, a restitution of a flight of Falcon 9 is presented in order to assess the accuracy of the tools used. Then, the preliminary designs of different variants of a future Ariane launch vehicle with a reusable VTOL booster stage are described. The proposed launch vehicle is capable of launching a seven ton satellite into a geostationary transfer orbit (GTO) from the European spaceport in Kourou. Different stagings and propellants (LOx/LH2, LOx/LCH4, LOx/LC3H8, subcooled LOx/LCH4) are considered, evaluated and compared. First sizing of a broad range of launcher versions are based on structural index derived from existing stages. Ascent and descent trajectories of the first stage are optimized together in order to reach the highest payload while keeping mechanical loads at reasonable levels. Another important aspect is the aerothermal environment stressing the structure. During the re-entry boost, the first stage is immersed in the engine exhaust plume. Steady state computational fluid dynamics calculations are performed along the re-entry trajectory to characterise the flow field during retro-propulsion around the first stage. The resulting aerothermal database is coupled with a simple structural model to study the time dependent heating of the hull structure. Based on these first iteration results more detailed preliminary designs are performed in a second iteration for selected configurations: a LOx/LH2 launcher and a LOx/LCH4 launcher both equipped with gas generator engines.

Item URL in elib:https://elib.dlr.de/114430/
Document Type:Conference or Workshop Item (Speech)
Additional Information:IAC-17-D2.4.3
Title:Evaluation of Future Ariane Reusable VTOL Booster stages
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Dumont, Etienneetienne.dumont (at) dlr.dehttps://orcid.org/0000-0003-4618-0572
Stappert, Svensven.stappert (at) dlr.deUNSPECIFIED
Ecker, TobiasTobias.Ecker (at) dlr.dehttps://orcid.org/0000-0001-7134-1185
Wilken, JaschaJascha.Wilken (at) dlr.dehttps://orcid.org/0000-0001-5748-1261
Karl, Sebastiansebastian.karl (at) dlr.deUNSPECIFIED
Krummen, Svensven.krummen (at) dlr.dehttps://orcid.org/0000-0002-4126-688X
Sippel, Martinmartin.sippel (at) dlr.dehttps://orcid.org/0000-0001-7356-7575
Date:27 September 2017
Journal or Publication Title:Proceedings of the International Astronautical Congress, IAC
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Status:Published
Keywords:Ariane, reusability, toss-back, vertical landing, VTOL, VTVL, liquid hydrogen, liquid oxygen, liquid methane, liquid propane, subcooled methane, gas generator, staged combustion, RTLS, DRL
Event Title:68th International Astronautical Congress
Event Location:Adelaide, Australia
Event Type:international Conference
Event Dates:25-29 September 2017
Organizer:IAF
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 , Göttingen
Institutes and Institutions:Institute of Space Systems > Space Launcher Systems Analysis
Institute for Aerodynamics and Flow Technology > Spacecraft, GO
Deposited By: Dumont, Etienne
Deposited On:28 Sep 2017 11:14
Last Modified:31 Jul 2019 20:11

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