CAJ | 학술논문

小展弦比飞翼布局的纵横向气动特性差异大，对天平测量与校准提出了较大挑战。专用天平针对其气动载荷特点和气动力试验需求，通过对常规片梁和柱梁组合的组合测量元件进行改进，提高了横向载荷的测量灵敏度，使得组合元件满足天平除轴向力外的5个分量的灵敏度测量需要。天平选用横Π型梁作为轴向力的测量梁，降低了其他分量对轴向力的干扰。在天平校准时通过施加纵向冲击振动的工程方法完成天平加载头的安全拆卸并应用于模型的拆卸。研制的天平已完成了相关风洞测力试验。
소전현비비익포국적종횡향기동특성차이대，대천평측량여교준제출료교대도전。전용천평침대기기동재하특점화기동력시험수구，통과대상규편량화주량조합적조합측량원건진행개진，제고료횡향재하적측량령민도，사득조합원건만족천평제축향력외적5개분량적령민도측량수요。천평선용횡Π형량작위축향력적측량량，강저료기타분량대축향력적간우。재천평교준시통과시가종향충격진동적공정방법완성천평가재두적안전탁사병응용우모형적탁사。연제적천평이완성료상관풍동측력시험。
There is a large difference between the longitudinal and lateral aerodynamic charac-teristics of a small aspect ratio flying wing aircraft,which presents a major challenge to the meas-urement and calibration of a strain gauge balance.According to the aerodynamic characteristics and to meet the aerodynamic test requirements of the aircraft,a specialized balance is designed by improving the combination element which is made up of sheet-beams and bar-beams.The sensi-tivities of the five components of the babance except for the axial force component are high e-nough for measurement,with the lateral components especially improved in the balance design. The lengthening thwart Π beam is adopted as the axial force element of the balance which can re-duce the interference to the axial force measurement.Longitudinal shock vibration is enforced on the load-adapter to take down it from the balance,and this is also the way to take down the test model.The balance has already passed relevant force tests in the wind tunnel.