| Pre-Flight Ground Testing of the Full-Scale HIFiRE-1 at Fully Duplicated Flight Conditions |
14 MAY 2008 |
23 pages |
| Authors:
Tim P. Wadhams; Matthew G. MacLean; Michael S. Holden; Erik Mundy; CALSPAN UB RESEARCH CENTER BUFFALO NY
|
 | As part of an experimental study to obtain detailed heating and pressure data over the full-scale HIFiRE-1 flight geometry, CUBRC has completed a 30-run matrix of ground tests, sponsored by the AFOSR, to determine the optimal flight hardware and instrumentation configuration necessary to achieve and make measurements of desired flow phenomena during the flight experiment HIFiRE-1 stands for Hypersonic International Flight Research and Experimentation and the flight vehicle consists of ... |
|
| Experiments in Numerical Studies of Low Density and Real Gas Effects on Regions of Shock Wave/Boundary Layer Interaction in Hypervelocity Flows |
JUN 2006 |
69 pages |
| Authors:
Michael S. Holden; Timothy P. Wadhams; Matthew MacLean; Ronald A. Parker; CALSPAN UB RESEARCH CENTER BUFFALO NY
|
| Experiments with extensive numerical simulations were conducted examining effects of low density flows and real gas effects on aerothermal characteristics of flows in hypervelocity facilities and in simple and complex flowfields in hypervelocity flows. These studies demonstrated that in the absence of real gas effects the DSMC and Navier-Stokes solutions accounting for slip effects were in excellent agreement with measurements. An extensive series of calibration and validation studies were done ... |
|
| Comparisons between Measurements in Regions of Laminar Shock Wave Boundary Layer Interaction in Hypersonic Flows with Navier-Stokes and DSMC Solutions |
01 JAN 2006 |
57 pages |
| Authors:
Michael S. Holden; Timothy P. Wadhams; John K. Harvey; Graham V. Candler; AEROTHERMAL AND AERO-OPTICS EVALUATION CENTER BUFFALO NEW YORK
|
| Experimental studies were conducted in conjunction with computations in a code validation exercise to examine the ability of DSMC and Navier-Stokes techniques to predict the complex characteristics of regions of shock/shock and shock/ boundary layer interactions in hypervelocity flows. In the experimental program, detailed heat transfer and pressure measurements in laminar regions of shock wave/boundary layer interaction, and shock/shock interaction, over hollow cylinder/flare and double cone configurations in hypersonic flow. ... |
|
| CFD Validation for Hypersonic Flight: Hypersonic Double-Cone Flow Simulations |
01 JAN 2006 |
15 pages |
| Authors:
Graham V. Candler; Ioannis Nompelis; Marie-Claude Druguet; Michael S. Holden; Timothy P. Wadhams; Iain D. Boyd; Wen-Lan Wang; MINNESOTA UNIV MINNEAPOLIS DEPT OF AEROSPACE ENGINEERING AND MECHANICS
|
| At the 2001 AIAA Aerospace Sciences Meeting there was a blind comparison between computational simulations and experimental data for hypersonic double-cone and hollow cylinder-flare flows. This code validation exercise showed that in general there was good agreement between the continuum CFD simulations and experiments. Also, in general, there was good agreement between direct simulation Monte Carlo (DSMC) calculations and the experiments in regions of attached flow. However, in almost all ... |
|
| Aerothermal and Propulsion Ground Testing That Can Be Conducted to Increase Chances for Successful Hypervelocity Flight Experiments |
OCT 2005 |
37 pages |
| Authors:
Michael S. Holden; CALSPAN UB RESEARCH CENTER BUFFALO NY
|
| Flight test experiments are significantly more risky and the results are in general less accurate than the equivalent studies in ground test facilities. The requirements for ground test simulation in hypersonic/hypersonic flows generally vary with the object of the study. Above 15,000 ft/s, not only is it extremely difficult to develop the temperatures and pressures required to directly simulate the flight environment, the properties of the gas in the reservoir ... |
|
| Studies Of Nosetip And Seekerhead Performance At Velocities Up To 5 KM/SEC At Duplicated Altitude Conditions |
1994 |
|
| Authors:
Michael S. Holden; James E. Craig; Ronald A. Parker
|
 | The development of the LENS facility during the past year to achieve of up to 15,000 ft/sec at reservoir conditions of over 2,000 atmospheres is reviewed. Additions and refinements to complete the aerothermal and aero-optical instrumentation suites are discussed. The application of the LENS facility for jet interaction, window heating and shroud separation testing is discussed. Experiments to calibrate and validate the performance of the LENS facility are compared with ... |
|
Reports by Author
