缩短飞行汽车起飞距离的一种滑跑新策略
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摘要
提出了一种车轮-螺旋桨混合驱动的飞行汽车起飞滑跑策略:使用车轮驱动起步、加速至切换速度,随即将动力切换至螺旋桨,采用螺旋桨驱动完成后续滑跑及爬升。分别建立了车轮-螺旋桨混合驱动和常规螺旋桨驱动两种滑跑策略的数学模型,运用发动机台架试验数据修正仿真模型,通过实例计算验证两种滑跑策略下的滑跑距离。仿真结果表明,采用的车轮-螺旋桨混合驱动滑跑策略能够有效缩短飞行汽车滑跑距离。
In this paper, a new take-off taxiing strategy was proposed for flying car driven by wheel-propeller: wheel drive was used to accelerate the flying car to the switch speed during the take-off process, then power was switched to propeller from wheels to complete the subsequent taxiing and climbing process in the following stage. Two mathematics models were established respectively for the wheel-propeller hybrid driving strategy and the strategy which used only propeller to drive. The models were amended by the experimental data of flying car engine bench testing. With real case,the taxiing distances of the two strategies were calculated and verified. The results show that taxiing distance of flying car is effectively shortened by using the wheel-propeller hybrid driving strategy.
In this paper, a new take-off taxiing strategy was proposed for flying car driven by wheel-propeller: wheel drive was used to accelerate the flying car to the switch speed during the take-off process, then power was switched to propeller from wheels to complete the subsequent taxiing and climbing process in the following stage. Two mathematics models were established respectively for the wheel-propeller hybrid driving strategy and the strategy which used only propeller to drive. The models were amended by the experimental data of flying car engine bench testing. With real case,the taxiing distances of the two strategies were calculated and verified. The results show that taxiing distance of flying car is effectively shortened by using the wheel-propeller hybrid driving strategy.
引文
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[3]Nneji C V,Stimpson A,Cummings M,et al.Exploring Concepts of Operations for On-Demand Passenger Air Transportation[C]//17thAIAA Aviation Technology,Integration,and Operations(ATIO)Conference.Denver,Colorado:AIAA,2017:3085.
[4]Lim D,Justin C,Mavris D.Advanced General Aviation Concept Study for a Roadable Aircraft[C]//15thAIAAAviation Technology,Integration,and Operations(ATIO)Conference.Dallas,TX:AIAA,2015:3001.
[5]Ott W.HELIos,a VTOL Flying Car:SAE-1998-985535[R].Warrendale,PA:1998.
[6]Head R.“Converticar”-The Roadable Helicopter:SAE-1998-985513[R].Warrendale,PA:1998.
[7]Kobayashi H,Nishizawa A.Decrease in Ground-Run Distance of Small Airplanes by Applying ElectricallyDriven Wheels[J].Japan Society of Aeronautical Space Sciences,2008,56:416-424.
[8]吴大卫,李寒冰,李书,等.基于仿真模型的短距起飞性能优化[J].北京航空航天大学学报,2014,40(6):756-761.
[9]王健,王飞跃,王家廞,等.先进短距起飞垂直着陆飞机的建模与仿真研究[J].系统仿真学报,2003,15(6):760-764.
[10]宋花玉,蔡良才,郑汝海.飞机起飞滑跑距离数值积分改进算法[J].交通运输工程学报,2007,7(2):24-28.
[11]石坚,卓斌,李伟华.汽车加速工况的仿真实验[J].上海交通大学学报,2000,34(4):437-440.
[12]聂宏,房兴波,魏小辉,等.舰载飞机弹射起飞动力学研究进展[J].南京航空航天大学学报,2013,45(6):727-738.
[13]余志生.汽车理论[M].5版.北京:机械工业出版社,2009:3-31.
[14]何庆芝.飞机设计手册[M].北京:航空工业出版社,1996:305-309.
[15]毛务本.一种计算汽车加速时间的新方法[J].江苏理工大学学报,2000,21(1):32-35.
[16]马菲.塞斯纳172型飞机发动机失效后螺旋桨风车状态对飞行阻力的影响分析[J].科学技术与工程,2011,11(30):7570-7572.