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Flight Test Results of Investigation of Acceleration Effects on a Gun Launched Rocket Engine

Lancelle, Daniel and Bozic, Ognjan and Köke, Hardy (2012) Flight Test Results of Investigation of Acceleration Effects on a Gun Launched Rocket Engine. 16th EML Symposium, 15.-19. Mai 2012, Peking, China.

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Abstract

Nowadays a lot of research is done in the field of electromagnetic driven Lorentz Rail Accelerators (LRA). To apply this technology to launch a sophisticated payload carrying vehicle, mechanical loads due to high acceleration have to be taken into account. The German Aerospace Center (DLR) is doing research in the field of a hybrid rocket propelled payload carrier which shall be launched from a Lorentz Rail Accelerator. The structure of the hybrid rocket engine is the most critical component, regarding mechanical stress. To investigate the effects of high acceleration during the launch from an LRA, an experimental setup is created. An 80% scale model of a hybrid rocket engine is mounted on a 155 mm howitzer shell. The experimental setup is then launched from a Panzerhaubitze 2000 with an acceleration of 3300 g. The model is equipped with strain gauge sensors to determine deformation during the acceleration phase. An acceleration sensor is integrated to measure the acceleration during launch. Data of the strain gauge bridges and the accelerometer are sampled by an electronic device mounted on the projectile, and buffered in the internal RAM. Following the data are transmitted to a ground station, during free flight, by a telemetry device, which is mounted on the howitzer shell instead of an igniter. The flight path of the projectile is tracked by different radar stations, to determine the impact point, so that the experiment can be recovered. The test shows that the hybrid rocket engine structure can withstand the mechanical loads that are caused by high acceleration that would occur during a launch from a LRA. Therefore a hybrid rocket engine is suitable for high acceleration launch. The sampled data are compared with FEM-calculations. Differences in simulation and measurement are observed.

Item URL in elib:https://elib.dlr.de/80425/
Document Type:Conference or Workshop Item (Paper)
Title:Flight Test Results of Investigation of Acceleration Effects on a Gun Launched Rocket Engine
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lancelle, Danieldaniel.lancelle (at) dlr.deUNSPECIFIED
Bozic, Ognjanognjan.bozic (at) dlr.deUNSPECIFIED
Köke, Hardyhardy.koeke (at) dlr.deUNSPECIFIED
Date:May 2012
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Flight Test, High Acceleration, Structure, Hybrid Rocket Engine
Event Title:16th EML Symposium
Event Location:Peking, China
Event Type:international Conference
Event Dates:15.-19. Mai 2012
Organizer:IEEE
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 - Vorhaben AHRES (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Lancelle, Daniel
Deposited On:09 Jan 2013 14:53
Last Modified:12 Dec 2013 21:57

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