航空计算技术
航空計算技術
항공계산기술
AERONAUTICAL COMPUTER TECHNIQUE
2015年
3期
8-11,16
,共5页
静气动弹性%气动力影响系数矩阵%CFD%非线性气动力%飞行载荷%气动载荷%弹性飞机
靜氣動彈性%氣動力影響繫數矩陣%CFD%非線性氣動力%飛行載荷%氣動載荷%彈性飛機
정기동탄성%기동력영향계수구진%CFD%비선성기동력%비행재하%기동재하%탄성비궤
static aeroelasticity%aerodynamic influence matrix%CFD%nonlinear aerodynamic data%flight loads%aerodynamic loads%flexible aircraft
为了研究气动力非线性对飞机静气动弹性特性及飞行载荷的影响，发展了一种基于非线性气动力的飞机静气弹及飞行载荷计算方法。通过引入CFD计算结果，实现对线性方法中的气动力影响系数矩阵的非线性修正，采用模态法求解静气弹配平方程得到飞机非线性的气弹变形及飞行载荷。以某翼身组合体构型为计算算例，分别针对刚性模型和柔性模型，基于非线性气动力完成了飞机静气动弹性分析及载荷计算，并与线性结果进行了对比分析。结果表明，非线性方法可对大迎角范围内飞机静气弹变形及飞行载荷做出较合理的预测。
為瞭研究氣動力非線性對飛機靜氣動彈性特性及飛行載荷的影響，髮展瞭一種基于非線性氣動力的飛機靜氣彈及飛行載荷計算方法。通過引入CFD計算結果，實現對線性方法中的氣動力影響繫數矩陣的非線性脩正，採用模態法求解靜氣彈配平方程得到飛機非線性的氣彈變形及飛行載荷。以某翼身組閤體構型為計算算例，分彆針對剛性模型和柔性模型，基于非線性氣動力完成瞭飛機靜氣動彈性分析及載荷計算，併與線性結果進行瞭對比分析。結果錶明，非線性方法可對大迎角範圍內飛機靜氣彈變形及飛行載荷做齣較閤理的預測。
위료연구기동력비선성대비궤정기동탄성특성급비행재하적영향，발전료일충기우비선성기동력적비궤정기탄급비행재하계산방법。통과인입CFD계산결과，실현대선성방법중적기동력영향계수구진적비선성수정，채용모태법구해정기탄배평방정득도비궤비선성적기탄변형급비행재하。이모익신조합체구형위계산산례，분별침대강성모형화유성모형，기우비선성기동력완성료비궤정기동탄성분석급재하계산，병여선성결과진행료대비분석。결과표명，비선성방법가대대영각범위내비궤정기탄변형급비행재하주출교합리적예측。
In order to investigate the effect of the nonlinear aerodynamics on the characteristics of aero -elasticity and flight loads ,the paper present the analysis method based on nonlinear aerodynamic data ,in which aerodynamic influence matrix in linear method is modified through introducing the nonlinear results from CFD,and the static aeroelastic/trim equation is solved using modal method to obtain aircraft deform-ation and flight loads .As a numerical example , the aeroelastic characteristics and flight loads of rigid model and flexible model of a wing body configuration are studied respectively based on nonlinear aerody -namic data,and compared with those based on linear aerodynamic data .After the comparison,it can be concluded that:for high angle of attack ,the nonlinear method can provide the rational aeroelastic results and flight loads .
