Abstract: Tethered balloon is applied in many scopes by it’s characteristic, and have a great future. The ambient wind influences flight stability, so wind-resistant performance becomes the important guide line of whole system. There is no method to validate test for air attitude, and computer simulation is introduced as usual.The parts that compose the whole are introduced in this article, the flight state is described, the correlation curve is investigated between pitch angle and time and between roll angle and time by modeling dynamic equation and putting on 1-consine discrete-gust model. The numerical simulation is reference to this tethered balloon design, and is helpful to aerostat safety.

Key words: Tethered balloon, Wind-resistant performance, Discrete-gust model, Dynamic simulation