CAJ | 학술논문

提出了一种采用轨道拖车搭载螺旋桨的临近空间螺旋桨地面试验方法。利用中航工业特种飞行器研究所的高精度拖车试验台控制螺旋桨前进速度，螺旋桨转速由伺服电机控制。针对新设计的临近空间低雷诺数螺旋桨，依据等前进比和等雷诺数相似准则，进行了螺旋桨在不同飞行高度下气动特性的地面试验研究。通过试验数据与片条理论及CFD方法计算结果的对比分析，验证试验方法的可行性及螺旋桨气动性能。结果表明：（1）由于桨尖马赫数较低，等前进比和等雷诺数相似准则适用于新设计的临近空间螺旋桨地面试验；（2）不同飞行高度下螺旋桨地面试验数据与计算结果吻合良好，说明提出的方法是可行的，可为同类螺旋桨试验提供参考。
제출료일충채용궤도타차탑재라선장적림근공간라선장지면시험방법。이용중항공업특충비행기연구소적고정도타차시험태공제라선장전진속도，라선장전속유사복전궤공제。침대신설계적림근공간저뢰낙수라선장，의거등전진비화등뢰낙수상사준칙，진행료라선장재불동비행고도하기동특성적지면시험연구。통과시험수거여편조이론급CFD방법계산결과적대비분석，험증시험방법적가행성급라선장기동성능。결과표명：（1）유우장첨마혁수교저，등전진비화등뢰낙수상사준칙괄용우신설계적림근공간라선장지면시험；（2）불동비행고도하라선장지면시험수거여계산결과문합량호，설명제출적방법시가행적，가위동류라선장시험제공삼고。
A new experimental technology for testing the aerodynamic performance of near space propeller by a railcar on the ground is proposed,in which the advance speed of the propeller is controlled by a high accuracy railcar,and the rotation speed of the propeller is controlled by a servo-electromotor.According to the equal Reynolds number and equal advance ratio similarity criterion,ground experiments including thrust and torque measurement were carried out to inves-tigate the designed near space propeller aerodynamic characteristics at different flight altitudes, and the experimental data was compared with computational results by strip theory and CFD method.The results indicate that:(1 )because the Mach number at the tip of the propeller is lower,the equal Reynolds number and equal advance ratio similarity criterion is appropriate for the designed near space propeller experiment on the ground;(2 )the ground experimental data of propeller at different altitudes agree well with computational results,and thus it is proved that the new experimental method is feasible and can provide a reference for similar propeller tests.