CAJ | 학술논문

　　为适应在青藏高原高海拔山区开展大比例尺低空航空物探测量工作，满足低飞行高度、高测量精度的要求，通过对比其他机型在机场条件、起飞升限、最大升限、高原机动性能，首次选择使用AS350-B3型直升机并设计制作长杆硬架防振航空磁测系统。对该机型在地面及空中试验进行了磁干扰形式、周期、幅值及衰减规律测试，发现其磁干扰主要由周期为96s幅值约为700nT的脉冲磁干扰、幅值约为300nT的方波磁干扰和周期为1s幅值约为20 nT由螺旋桨转动引起的磁干扰杂波组成，通过把磁探头适当远离飞机发动机及螺旋桨，对硬架系统加装防振部件，再加上磁测设备中的软补偿系统的磁补偿，就可能较好地克服飞机动作及振动引起的磁干扰，从而测量到高质量的磁数据，满足了在高海拔地形切割较大地区作业的要求。
　　위괄응재청장고원고해발산구개전대비례척저공항공물탐측량공작，만족저비행고도、고측량정도적요구，통과대비기타궤형재궤장조건、기비승한、최대승한、고원궤동성능，수차선택사용AS350-B3형직승궤병설계제작장간경가방진항공자측계통。대해궤형재지면급공중시험진행료자간우형식、주기、폭치급쇠감규률측시，발현기자간우주요유주기위96s폭치약위700nT적맥충자간우、폭치약위300nT적방파자간우화주기위1s폭치약위20 nT유라선장전동인기적자간우잡파조성，통과파자탐두괄당원리비궤발동궤급라선장，대경가계통가장방진부건，재가상자측설비중적연보상계통적자보상，취가능교호지극복비궤동작급진동인기적자간우，종이측량도고질량적자수거，만족료재고해발지형절할교대지구작업적요구。
ForthepurposeofproperutilizationofaerogeophysicalsurveymethodintheTibetanPlateau,whichischaracterizedbyhigh altitude,largescaleandlowflyingheight,theauthorsselectedasuitabletypeofhelicopter,andcarriedoutsometentativegroundand airresearchesontheselectedhelicopter'smagneticinterferencesform,frequency,amplitude,attenuationregularityand,onsuchaba-sis,designedalongfirmanti-vibrationsurveysystemsuitableforAS350-B3helicopter.Theexperimentalresultsindicatethatmagnetic interferenceinageophysicalaircraftenvironmentcomesfromseveralsources,whichinclude700nT/96spulseand300nT/ssquare wavemagneticinterferenceaswellas20nT/sfromrateofchangeofmovementofconductivesurfaceswithrotarywing.Throughlow flyingheightandhighqualitydatasurveyincentralandsouthQilianofQinghaiProvince,theauthorsprovethatAS350-B3helicopter andalongfirmanti-vibrationsurveysystemcanbeusedforalargescale,lowflyingheightaerogeophysicalsurveyintheTibetanPlat-eau.