A so-called High-Altitude Platform (HAP) is designed for flight at very high altitudes and for a prolonged period. However, flight at low altitudes, especially in the presence of atmospheric perturbations, is challenging. Therefore, thorough investigations of the aircraft’s landing capabilities and the associated limiting wind conditions are crucial to reducing the risk of a loss of the aircraft during landing. This Master’s Thesis deals with landing simulations in the presence of lateral wind of different types. For this purpose, a model for lateral friction forces of a skid was developed and a lateral controller, based on THCS and a guidance block was implemented.