Research on Flight Technique and Hazard Control for Civil Airplane Crosswind Flight Test

Abstract

This paper introduce the flight test method of civil airplane taking-off and landing in strong crosswind condition. Observe and analyse the relationships between pilot's inputs and airplane behaviour. Thus, establish control objectives and precautionary measurements in strong crosswind flight test. In strong crosswind flight test, while airplane is accelerating during take-off, pilots’ objectives are to align the airplane to the center-line of the runway and balance the load of the main wheels with increasing velocity. While approaching and landing, excessive sideslip angle or roll angle should be avoided to prevent airplane damage upon touchdown, during deceleration after touchdown, thrust-reverser may be activated when the airplane is steady aligned with the runway. On this basis, the hazards of losing control, drift off the runway and powerplant failure may be avoided. From the hazards identified, we may deduce that the hazard level of the flight test is high in nature, however, preparations and pre-planning in flight test methods, flight training in advance, and even finding the appropriate test environment may significantly reduce the hazard level.