超音速旅客机设计中两个重要的技术要求

超音速旅客机SSA(Supersonic Airliner)是未来商用运输机发展的一个重要方向.在研究新一代SSA载荷、航程、速度等指标的基础上,推导出SSA设计中2个重要的技术要求.一是通过创造性地仿照亚音速客机机身布局方法,提出适用于SSA的机身布局方法,推出SSA乘客总数对机身布局的要求.算例分析表明,这种机身布局方法具有一定的合理性和工程实用性.二是作相关假设后,对布雷盖(Breguet)航程公式进行变形,再利用重量估算方法,导出起飞总重量、任务燃油消耗量与巡航升阻比的关系,得到运营经济性对SSA巡航升阻比的要求.所揭示的这2个技术要求在进行SSA多学科综合优化设计中具有重要作用和指导意义.

Two significant technique requirements in supersonic airliner design

Supersonic airliner (SSA) is a significant development orientation for the future commercial transport. Two significant technique requirements, based on the study of the payload, range and velocity of new supersonic airliner, was deduced for SSA design. At first, a fuselage arrangement technique applicable to SSA was derived from imitating subsonic airliner fuselage arrangement method in a creative way. The demand of the passenger total to fuselage arrangement was indicated. A sample analysis shows that this technique is reasonable and available in engineering. Secondly, transforming the Breguet range equation with several relative assumptions and using weight estimate gains the relation between the takeoff weight, fuel used in mission and lift-drag radio in cruise. The requirement of SSA operating economics to the lift-drag radio in cruise was obtained. The gained two requirements have significant roles and directional value in multidisciplinary optimization design of SSA.