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Wave Drag Reduction Approach for Blunt Bodies at High Angles of Attack

Schülein, Erich (2008) Wave Drag Reduction Approach for Blunt Bodies at High Angles of Attack. DLR-Interner Bericht. DLR-IB 224 - 2008 A 18, 19 S. DLR Göttingen.

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Abstract

Proof-of-concept experiments for a spike aligned into the oncoming flow at the nose of a supersonic blunt body were performed to investigate its aerodynamic effectiveness over a wide range of body's angles of attack. The investigations have been conducted in the Ludwieg Tube Facility at DLR Göttingen at Mach 2, 3 and 5 for angles of attack from 0 to 30 degrees. The model tested is a cylindrical body with a hemispherical nose. Additionally to the body equipped with an aligned spike, a reference body without a spike and a body with a conventional fixed spike were investigated. Furthermore, a test model with a prototype of a pivoting self-aligning spike-device has also been investigated. The results containing shadowgraph visualizations, direct force measurements and infrared heat flux measurements show the clear advantages of the spikes aligned into the flow.

Item URL in elib:https://elib.dlr.de/56566/
Document Type:Monograph (DLR-Interner Bericht)
Title:Wave Drag Reduction Approach for Blunt Bodies at High Angles of Attack
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schülein, ErichUNSPECIFIEDUNSPECIFIED
Date:1 June 2008
Open Access:No
In DOAJ:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:19
Publisher:DLR Göttingen
Status:Published
Keywords:Bow Shock, Wave Drag, Supersonic, Spike
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Military Technologies (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > High Speed Configurations
Deposited By: Schülein, Dr.rer.nat. Erich
Deposited On:04 Dec 2008
Last Modified:15 Jan 2010 00:37

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