Nol Hypersonic Tunnel No 4
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| Author | : James E. Danberg |
| Publisher | : |
| Total Pages | : 84 |
| Release | : 1964 |
| Genre | : Hypersonic wind tunnels |
| ISBN | : |
NOL's Hypersonic Tunnel No. 4 is a continuous blow-down hypersonic tunnel designed for research and development testing of models, instrumentation, and wind tunnel components. It can operate at Mach numbers from 5 to 10 with supply pressures up to 52 atmospheres and supply temperatures up to 1700 R. This report summarizes the pertinent aerodynamic design criteria and operating experience compiled during its first eleven years of operation. Included are descriptions of the major components and their performance along with the flight simulation capability of the facility and a bibliography of previously published reports. (Author).
| Author | : |
| Publisher | : |
| Total Pages | : 68 |
| Release | : 1955 |
| Genre | : |
| ISBN | : |
| Author | : James E. Danberg |
| Publisher | : |
| Total Pages | : 1 |
| Release | : 1964 |
| Genre | : |
| ISBN | : |
NOL's Hypersonic Tunnel No. 4 is a continuous blow-down hypersonic tunnel designed for research and development testing of models, instrumentation, and wind tunnel components. It can operate at Mach numbers from 5 to 10 with supply pressures up to 52 atmospheres and supply temperatures up to 1700 R. This report summarizes the pertinent aerodynamic design criteria and operating experience compiled during its first eleven years of operation. Included are descriptions of the major components and their performance along with the flight simulation capability of the facility and a bibliography of previously published reports. (Author).
| Author | : L. L. LICCINI |
| Publisher | : |
| Total Pages | : 23 |
| Release | : 1955 |
| Genre | : |
| ISBN | : |
| Author | : P. Wegener |
| Publisher | : |
| Total Pages | : |
| Release | : 1955 |
| Genre | : |
| ISBN | : |
| Author | : Eva Winkler |
| Publisher | : |
| Total Pages | : 12 |
| Release | : 1952 |
| Genre | : |
| ISBN | : |
| Author | : R. Kenneth Lobb |
| Publisher | : |
| Total Pages | : 40 |
| Release | : 1955 |
| Genre | : |
| ISBN | : |
| Author | : R. Kenneth Lobb |
| Publisher | : |
| Total Pages | : 14 |
| Release | : 1952 |
| Genre | : |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 40 |
| Release | : 1954 |
| Genre | : |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 45 |
| Release | : 1952 |
| Genre | : |
| ISBN | : |
Results of a diffuser investigation in the continuous 12 x 12 cm on Hypersonic Tunnel No. 4 are presented. A brief introduction describes previous supersonic diffuser work. The diffuser investigated and the experimental techniques are then discussed. The results show first that air condensation has little or no effect on diffuser performance. Data on diffuser throat areas and overall pressure ratios needed to start and maintain hypersonic flow are given for a Mach number range from 5.9 to 9.6. The effect of two different throat locations and different diffuser configurations on tunnel performance is investigated. A peaked throat diffuser with 3 deg wall divergence aft of the throat was selected for a more detailed study. The pressure recovered by this optimum diffuser in the range 5.9
