Flutter is not allowed to happen in the range of aircraft flight envelope, if the flutter occurs during the flight, it will cause damage to the aircraft structure, and endanger the safety of the pilot and the passengers’ life safety. By increasing the aircraft's tungsten alloy ailerons counterweights and changing the position of the counterweights to adjust the flutter speed can greatly improve the flutter characteristics of the wing, because tungsten alloy counterweights can reduce or eliminate the flutter, thereby to ensure flight safety.

 

By varying the variable aircraft center of gravity, variable rotational flutter frequency analysis, we can find that if the ailerons are closer to rearward, the pinwheeling frequency is closer to the frequency of wing bending, then then it will be more prone to happen flutter. In this case, we can adjust the gravity position of the aileron by adjusting the density and concentrated quantity of ailerons, i.e. adding different weights of the counterweights respectively in the aileron leading edge. Using the method of protract counterweights can effectively improve the flutter speed without changing the weight of the counterweights. Moreover, if the protract distance is longer, the ailerons’ center of gravity will be more forward, and the flutter speed will also be higher. Therefore, a reasonable choice of counterweights location and the counterweights weight can improve aircraft flutter speed, so makes the stability and balance of the aircraft higher.

 

Because of the narrow and long characteristics of aileron, so the counterweights mounted on the aileron should have the small but high characteristics. And due to the high density properties of tungsten alloy, it can exhibit a better weight ratio in the case of smaller volume, therefore tungsten alloy is an excellent material for the production of aircraft ailerons counterweights.