Affordable Access

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

Authors
Publisher
DLR Göttingen
Publication Date
Keywords
  • Hochgeschwindigkeitskonfigurationen
Disciplines
  • Physics

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.

There are no comments yet on this publication. Be the first to share your thoughts.