关键词: 气动载荷, 飞机机动, 飞机技术规范, 发动机故障

Abstract: Unsymmetrical power maneuver condition is one of the important strength design conditions in Military Airplane Strength and Rigidity Specification. A study on determining the flight loads of multiengine airplane in unsymmetrical power maneuver has been carried out.A calculation example for an airplane with four turbopropeller engines is presented.The main fac- tors affecting the flight loads in unsymmetrical thrust condition are pointed out.Procedures to perform unsymmetrical power simulation maneuver are described.In addition. some faults in the item dealing with unsymmetrical power maneuver in Airnlane Strength and Rigidity Specifica-tion are discussed and amendment is also given in this paper.The present paper is important for the flight loads calculation and strength demonstration flight test of new multiengine airplane

Key words: aerodynamic load, aircraft maneuvers, airplane specifications, engine failure