The Effect of Pressure Gradients on Transition Zone Length in Hypersonic Boundary Layers

The Effect of Pressure Gradients on Transition Zone Length in Hypersonic Boundary Layers
Author: Roger L. Kimmel
Publisher:
Total Pages: 46
Release: 1993
Genre: Aerodynamics, Hypersonic
ISBN:

Boundary layer transition was measured in zero, favorable, and adverse pressure gradients at Mach 8 using heat transfer. Models consisted of 7 degrees half angle forecones 0.4826 m long, followed by flared or ogive aft bodies 0.5334 m long. The flares and ogives produced constant pressure gradients. For the cases examined, favorable pressure gradients delay transition and adverse pressure gradients promote transition, but transition zone lengths are shorter in favorable pressure gradient. Results of the effect of adverse pressure gradient on transition zone lengths were inconclusive.

Heat-transfer and Flow-field Tests of the McDonnell Douglas-Martin Marietta Space Shuttle Configurations

Heat-transfer and Flow-field Tests of the McDonnell Douglas-Martin Marietta Space Shuttle Configurations
Author: Richard K. Matthews
Publisher:
Total Pages: 112
Release: 1973
Genre: Aerothermodynamics
ISBN:

Aerothermodynamic tests of Phase B space shuttle configurations proposed by McDonnell Douglas--Martin Marietta were conducted at Mach numbers 8 and 10.5. Test conditions provided both Mach number and Reynolds number simulation for typical ascent and reentry trajectories. This report provides a comprehensive analysis of the major test results and also presents data comparisons with theoretical calculations. Specific areas covered are ascent heating and shock interference, booster reentry heating and flow fields, and orbiter reentry analysis which includes leeside heating, windward shock angles and flow fields, windward surface heating, and boundary-layer transition.

Viscous Drag Reduction

Viscous Drag Reduction
Author: C. Sinclair Wells
Publisher: Springer
Total Pages: 497
Release: 2013-12-20
Genre: Technology & Engineering
ISBN: 1489955798