摘要
在民机概念设计阶段,利用巡航、转场、地面等少数高度下的飞机气动和发动机油耗数据,在满足适航条例规定的转场航程和待机时间条件下,采用迭代和积分方法对转场和待机油耗进行计算,而对于滑跑起飞、爬升、下降、滑跑着陆等阶段的油耗则采用统计数据进行估算,从而得到巡航阶段的油耗,进而计算出飞机航程。由于考虑了对民机备份燃油量的硬性要求,得到的航程值具有实用意义。通过结合上述方法和喷气飞机等高度飞行的最佳飞行参数计算方法,分析了某民机方案等姿态和等速度飞行策略下的实用最佳航程、续航时间以及飞行各阶段的燃油消耗量。
An efficient calculation methodology is developed for application in the conceptual design of civil aircraft.Requiring only limited aerodynamic and engine fuel consumption data,this method calculates,in full compliance with airworthiness regulations regarding minimum diversion range and hold endurance,a civil aircraft＇s maximum range and endurance.Fuel used in hold and diversion is found by iterations before range of the main cruise segment is calculated.Statistical data is used to estimate the fuel consumption during such non-cruise secondary mission segments as takeoff warm-up,climb out,descent and landing.This method produces practical results because the effect of reserve fuel policies on civil aircraft＇s range performance has been accounted for.Finally an analysis of the optimal range performance of a generic medium-haul airliner design is presented to illustrate the use of this method,which includes maximum range,endurance and fuel consumption for both constant attitude and constant speed flight trajectory.
出处
《飞机设计》
2011年第1期9-12,35,共5页
Aircraft Design
关键词
民用飞机
性能
优化
transport aircraft
performance
optimization
