航空科学技术
航空科學技術
항공과학기술
Aeronautical Science and Technology
2015年
9期
42-45
,共4页
螺旋桨飞机%发动机短舱%展向位置%翼展
螺鏇槳飛機%髮動機短艙%展嚮位置%翼展
라선장비궤%발동궤단창%전향위치%익전
propeller aircraft%engine nacelle%spanwise position%wingspan
针对国内某型双发涡桨飞机方案，选取了发动机短舱沿翼展五个展向位置，研究了不同短舱展向位置对气动特性、全机侧翻角、机翼重量的影响。结果表明，升力系数、阻力系数、俯仰力矩系数随机身迎角变化影响很小，滚转力矩系数随侧滑角的变化有一定影响；短舱内移，侧翻角增大，外移侧翻角减小；短舱内移机翼重量增加，外移重量减小。
針對國內某型雙髮渦槳飛機方案，選取瞭髮動機短艙沿翼展五箇展嚮位置，研究瞭不同短艙展嚮位置對氣動特性、全機側翻角、機翼重量的影響。結果錶明，升力繫數、阻力繫數、俯仰力矩繫數隨機身迎角變化影響很小，滾轉力矩繫數隨側滑角的變化有一定影響；短艙內移，側翻角增大，外移側翻角減小；短艙內移機翼重量增加，外移重量減小。
침대국내모형쌍발와장비궤방안，선취료발동궤단창연익전오개전향위치，연구료불동단창전향위치대기동특성、전궤측번각、궤익중량적영향。결과표명，승력계수、조력계수、부앙력구계수수궤신영각변화영향흔소，곤전력구계수수측활각적변화유일정영향；단창내이，측번각증대，외이측번각감소；단창내이궤익중량증가，외이중량감소。
Five different spanwise positions of the aircraft were studied in the paper. The aerodynamic charateristics, landing gear side turn-over angle and wing weight were calculated and analyzed. The result shows that impact of the lift , drag , pitching moment coefifcient with the angle of attack is smal. The roling moment coefifcient with the angle of sideslip has certain effect. The side turn-over angle and wing weight are increased as the naceles are moved inward.
