Refine Search

New Search

Results: 5

(searched for: doi:10.2514/6.1968-566)
Save to Scifeed
Page of 1
Articles per Page
by
Show export options
  Select all
, N. T. Clemens, , B. Bathel, R. Parker, T. Wadhams, M. Holden, B. Kirk
Journal of Spacecraft and Rockets, Volume 52, pp 243-252; https://doi.org/10.2514/1.a32946

Abstract:
Planar laser-induced fluorescence of nitric oxide was used to visualize the interaction of reaction control system jet flows on the afterbody of a hypersonic capsule reentry vehicle at the Calspan-University at Buffalo Research Center’s Large Energy National Shock Tunnel I reflected shock tunnel facility. The interaction of pitch and roll jets with the flowfield was investigated. Additionally, thin-film sensors were used to monitor heat transfer on the surface of the model to detect localized heating resulting from the firing of the reaction control system jets. Visualizations of the capsule shear layer using both planar laser-induced fluorescence and schlieren imaging compared favorably. The structure of the roll jet was found to be significantly altered due to interactions with the flowfield. Additionally, the presence of the roll jet appeared to change the nature of the shear layer from steady laminar to unsteady. The pitch jet structure was only disturbed in the far field. Comparison of the planar laser-induced fluorescence jet-fluid visualizations and the surface heat flux distributions indicate that the regions of enhanced aeroheating are not caused by the jet fluid itself impinging on the surface, but rather by the presence of jet-induced horseshoe vortices and shock wave/boundary-layer interactions.
Page of 1
Articles per Page
by
Show export options
  Select all
Back to Top Top