Force Measurement of Large-scale Scramjet Model within Short Test Duration
極短時間内での大型スクラムジェット膜型の力計測

Hideyuki TANNO, Masatoshi KODERA, Katsuhiro ITOH, Kazuo SATO, Tomoyuki KOMURO, Masahiro TAKAHASHI
2005 TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B  
Aerodynamic force measurement technique was developed for large scramjet models withir short test time. The technique was based on direct acceleration measurement with miniature accelerometers mounted on a test model, which was suspended with stainless steel wires to make the restorative force negligible. In order to cancel the natural mode of vibrations of the test model, sum averaging signal processing technique was proposed. The technique was applied on drag force measurement of a 3 m length
more » ... rectangular duct scramjet in the high enthalpy shock tunnel HIEST. Measurement result was evaluated with a three-dimensional Navier -Stokes numerical simulation. The evaluation with numerical simulation showed that the difference between measurement and numerical simulation is less than 5%. It is demonstrated that the technique has sufficient reliability to measure aerodynamic force with time resolution of 350μs, which is equivalent to frequency response of 2.88 kHz.
doi:10.1299/kikaib.71.1596 fatcat:teodnhiwcba33i66hp4j4xijsu