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Regression Rate Measurements in a Hybrid Rocket Engine with Advanced HTPB-based Fuel Mixtures and Hydrogen Peroxide

Poppe, Georg and Bozic, Ognjan and May, Stefan and Rolfes, Steffen and Koch, Patrick (2018) Regression Rate Measurements in a Hybrid Rocket Engine with Advanced HTPB-based Fuel Mixtures and Hydrogen Peroxide. Space Propulsion Conference 2018, 14.-18. Mai 2018, Sevilla, Spanien.

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Abstract

A new slab combustion chamber employing hydrogen peroxide (H2O2) and hydroxyl-terminated polybutadiene (HTPB) was designed and commissioned by the German Aerospace Center (DLR), Institute for Aerodynamics and Flow Technology (AS) in Braunschweig at the DLR site Trauen. The combustion chamber has four helium-cooled quartz glass windows, which provide an insight into the combustion process above the fuel slab and enable its characterization with optical measurement techniques. The experiment allows studying the combustion process at pressures of up to 25 bars and oxidizer mass flows of up to 250 g/s. A H2O2 catalyst chamber, which delivers a mixture of hot water steam (H2O) and oxygen (O2), enables self-ignition without an additional igniter system. The regression rate during the test runs is measured with two ultrasonic probes and other methods. During the experiments a high-speed camera, a two-color pyrometer and infrared temperature measurements were also used. The first results show a regression rate of about 0.62 mm/s at a mass flux of 86 kg/(m2*s) and a pressure of 20 bars for HTPB with 1% graphite powder.

Item URL in elib:https://elib.dlr.de/120062/
Document Type:Conference or Workshop Item (Speech)
Title:Regression Rate Measurements in a Hybrid Rocket Engine with Advanced HTPB-based Fuel Mixtures and Hydrogen Peroxide
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Poppe, GeorgGeorg.Poppe (at) dlr.dehttps://orcid.org/0000-0001-9003-3057
Bozic, OgnjanOgnjan.Bozic (at) dlr.deUNSPECIFIED
May, Stefanstefan.may (at) dlr.deUNSPECIFIED
Rolfes, SteffenUNSPECIFIEDUNSPECIFIED
Koch, PatrickUNSPECIFIEDUNSPECIFIED
Date:18 May 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:hybrid rocket engine, hydroxyl-terminated polybutadiene, hydrogen peroxide, slab burner, regression rate, Hybridraketentriebwerk, HTPB, Wasserstoffperoxid, Regressionrate
Event Title:Space Propulsion Conference 2018
Event Location:Sevilla, Spanien
Event Type:international Conference
Event Dates:14.-18. Mai 2018
Organizer:3AF - Association Aéronautique et Astronautique de France
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):Project ATEK
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Spacecraft, BS
Deposited By: Poppe, Georg
Deposited On:18 Jun 2018 15:05
Last Modified:18 Jun 2018 15:05

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