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Detailed Investigation of the Combustion Efficiency of the DLR API Injector for LOX/H2 Rocket Engine Applications

Deeken, Jan C. and Suslov, Dmitry and Schlechtriem, S. and Haidn, Oskar (2011) Detailed Investigation of the Combustion Efficiency of the DLR API Injector for LOX/H2 Rocket Engine Applications. In: Proceedings. 28th International Symposium on Space Technology and Science (ISTS), 2011-06-05 - 2011-06-12, Okinawa, Japan.

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Since a few years DLR Lampoldshausen has been engaged in the development of a new injection concept for cryogenic liquid propellant rocket engines. This concept bases on the injection of the liquid oxygen through a large number of simple tubes while the entire hydrogen is injected through the porous face plate. The experimental results reported here show results from two different sets of test campaigns, one with 50 mm diameter (API50) and one with 80 mm diameter (API80) combustion chamber, respectively. The API50 part of the paper summarizes test campaigns using gaseous hydrogen at 105 K with two different combustion chamber lengths, which result in L* = 0.46 m and 0.66 m, respectively. It is worthwhile noticing that the combustion efficiency for L* = 0.46 m which is well below any recommendation from the literature is similar to the one measured for L* = 0.66 m. The API80 part of the paper reports results from a test campaigns of an 80 mm diameter subscale chamber having a contraction ratio of 2.56 and a L* of 0.87 m with hydrogen at 45 K. The measured combustion efficiencies are almost pressure independent for the entire combustion chamber pressure range between 5 and 9 MPa.

Item URL in elib:https://elib.dlr.de/72742/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Detailed Investigation of the Combustion Efficiency of the DLR API Injector for LOX/H2 Rocket Engine Applications
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Deeken, Jan C.UNSPECIFIEDhttps://orcid.org/0000-0002-5714-8845UNSPECIFIED
Suslov, DmitryUNSPECIFIEDhttps://orcid.org/0000-0002-5160-9292UNSPECIFIED
Journal or Publication Title:Proceedings
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:API injector, LOX, LH2, rocket engine
Event Title:28th International Symposium on Space Technology and Science (ISTS)
Event Location:Okinawa, Japan
Event Type:international Conference
Event Start Date:5 June 2011
Event End Date:12 June 2011
Organizer:JAXA, JSAS, ISTS
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):W - Antriebsystemtechnik - Schubkammertechnologie und Hochdruckverbrennung (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Rocket Propulsion
Institute of Space Propulsion > Technologie
Deposited By: Hanke, Michaela
Deposited On:12 Dec 2011 11:27
Last Modified:24 Apr 2024 19:38

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