D-331 超音速小型ルートヴィーク管の試作と予備的検定

概要

論文の詳細を見る
Supersonic/hypersonic ground test facilities for clarifying spaceplane aerodynamics need to generate calm flows without shocks and pressure disturbances, and sufficiently long duration for flow field settling and measurements. The Ludwieg tube is selected for satisfaction of such requirements. Its flow characteristics are predicted by quasi-one-dimensional calculation. Design points for flow speeds ranging from Mach 2 to 6 are selected. Its primary components, such as high-pressure tubes, a highspeed opening valve, and contoured nozzles of Mach 2 and 3 are designed, constructed and assembled experimentally. Preliminary runs with measurements of the pressure histories in the tube and schlieren visualization of the nozzle flow show good agreement with the theoretical prediction. A steady-state flow duration of about 50 milliseconds is attained. In addition, a six-component internal balance for measuring aerodynamic forces and moments is introduced and being calibrated.
日本流体力学会の論文
2003-07-28