Conventional airframes require heavy structural material to transfer the fuselage's weight laterally to landing gear and wheels under the wings.
传统机身设计要求使用重型结构材料，以便把机身横向重量转移到机翼下方的起落架和机轮上。
2
Since the gear engagement is a common coupling form between rotors, the transfer matrix of skew gear engagement in global coordinate system is deduced based on the concept of coupling element.