民用飞机增升装置载荷设计技术研究

High lifting device load design technology for civil aircraft

增升装置是机翼上用来改善气流状态和增加升力的一套活动面板,可在飞机起飞、着陆和低速机动飞行时增加机翼剖面弯曲度和有效迎角,因此对提升大型民用飞机的起飞和降落等低速性能,包括进场姿态有着决定性的影响。飞机在起降中一般要求尽量减小飞行速度和缩短滑行距离,同时要达到比较大的升力系数,这就意味着增升装置此时也具有较大的偏度,作用在上面的载荷也会比较大。因此,大型民用飞机增升装置的载荷计算是其设计工作中的重中之重,在民用飞机载荷设计过程中有非常重要的意义。主要介绍了民用飞机增升装置载荷的计算原理及设计方法,给出了一套襟缝翼气动和惯性载荷的工程算法。

The high lifting device is a set of movable panel on the wing to improve the air flow and increase the lifting force.It can increase the curvature and effective angle of attack of the wing section when the aircraft takes off,lands and maneuvers at low speed.Therefore,it has a decisive influence on improving the low-speed performance for large civil aircraft,including the approach attitude.In the low-speed takeoff and landing,it is generally required to reduce the flight speed and the taxiing distance as much as possible,and at the same time to achieve a higher lift coefficient,which means that the lifting device also has a large deflection at this time,and the load acting on it will be relatively large.Therefore,the load calculation of high lifting device for the large transport aircraft is one of the key tasks in its design,which is of great significance in the load design process for civil aircraft.This paper mainly introduces the calculation principle and design method of the lifting device load for the civil aircraft,and gives a set of engineering algorithm for the aerodynamic and inertial loads of the flap slat.