航空科学技术2025，Vol.36Issue(8)：27-33,7.DOI:10.19452/j.issn1007-5453.2025.08.004
交错六旋翼飞行器地效影响下的着陆特性研究
Analysis on Vertical Landing Stability for Intermeshing Hexacopter Under Ground Effects
摘要
Abstract
The intermeshing rotorcraft often encounters ground effects during the landing process,which generate additional lift and disturbance forces on the rotors,leading to dynamic rebound or even tipping of the aircraft,severely threatening landing safety.This paper analyzes the variation of lifts on a hexacopter with intermeshing rotors under different rotational speeds and altitudes above the ground through ground effect experiments.A theoretical model of lift for the intermeshing hex rotor was derived using potential flow and image method,and a dynamic landing dynamics model was established,considering the initial landing height of the aircraft,the foot-to-ground friction force,and landing velocity.The simulation results indicate that the rotorcraft is significantly affected by ground effects at high rotational speeds,requiring a certain initial descent velocity for landing.There exists an optimal descent velocity that minimizes the structural forces on the aircraft now of touchdown.It provides a theoretical basis for the safe and stable landing of hexacopter under complex ground effects.关键词
气动干扰/地面效应/多旋翼飞行器/着陆稳定性/数值仿真Key words
aerodynamic interference/ground effect/multirotor aircraft/landing stability/numerial simulation分类
航空航天引用本文复制引用
朱赫,韦少雄,聂宏,魏小辉,杜俞浩..交错六旋翼飞行器地效影响下的着陆特性研究[J].航空科学技术,2025,36(8):27-33,7.基金项目
国家自然科学基金(52202443,52275114) （52202443,52275114）
航空科学基金(2023Z010052002) （2023Z010052002）
中国博士后科学基金(2023M731656) （2023M731656）
直升机动力学全国重点实验室基金(2023-JCJQ-LB-067-05e) （2023-JCJQ-LB-067-05e）
江苏省自然科学基金(BK20220898) National Natural Science Foundation of China(52202443,52275114) （BK20220898）
Aeronautical Science Foundation of China(2023Z010052002) （2023Z010052002）
China Postdoctoral Science Foundation(2023M731656) （2023M731656）
National Key Laboratory of Helicopter Aeromechanics Foundation(2023-JCJQ-LB-067-05e) （2023-JCJQ-LB-067-05e）
Natural Science Foundation of Jiangsu Province(BK20220898) （BK20220898）
