一种飞行迎角和侧滑角解算方法研究

水陆两栖飞机的机身外形复杂，采用单一迎角传感器难以消除侧滑角的影响。对某大型水陆两栖飞机的前机身模型进行风洞试验，根据机身两侧迎角传感器受侧滑角影响的特点，在机身两侧对称位置安装迎角传感器，研究左右两侧迎角传感器的测量值随模型迎角、侧滑角的变化规律；根据左右两侧测量值的均值和差值，反算得到飞行迎角和侧滑角，并对此迎角、侧滑角解算方案进行试飞验证。结果表明：机身两侧安装迎角传感器可以消除侧滑角影响，从而得到准确的迎角信号，还可根据左右迎角差值计算得到侧滑角，采用机身左右两侧的迎角传感器解算飞行迎角和侧滑角是可行的。

A method for calculating angle of attack and sideslip angle

The angle of attack and sideslip signal is an important parameter of the flight control system. According to the characteristics of the angle of attack sensors on both sides of the fuselage that are affected by the angle of sideslip, a pair of angle of attack sensors are used to calculate the angle of attack and sideslip.Wind tunnel tests were carried out on the front fuselage model of a large amphibious aircraft, and angle of attack sensors were installed symmetrically at both sides of the fuselageto study the variation of the measured values of the two sides of the angle of attack sensors with the angle of attack and sideslip angle of the model, the angles of attack and sideslip are calculated from the mean and difference of the measurements on the left and right sides. The scheme is verified by flight test. The preliminary flight test results show that it is feasible to calculate the angle of attack and sideslip angle by using the angle of attack sensors on the left and right sides of the fuselage.