The method of eigenvalue analysis is used to investigate the ground resonance stability of the helicopter rotor/body coupled system with two connections of dampers.
采用特征分析法计算了两种减摆器连接形式的直升机地面共振稳定性。
Semi-Active Adaptive Control of Helicopter Ground Resonance;
直升机“地面共振”半主动自适应控制
Characteristics of Magneto-rheological Damper with Squeeze Mode and Its Effect on Helicopter "Ground Resounance" Dynamic Stability;
挤压式磁流变减摆器特性及其对直升机“地面共振”的影响研究
The enemy supported ground troops with gunships.
敌军以武装直升飞机支援地面部队
Trimming of Helicopter with Consideration of the Ground Effect;
悬停时考虑地面效应的直升机的配平
Design of Double-mode Ground Manipulation System for Unmanned Helicopter
无人直升机双模式地面操控系统设计
Random Vibration Analysis of Mounting Rack for Helicopter-Borne Equipment
直升机载设备安装架的随机振动分析
The Landing Gear Damper Vibration Study of a Kind of Helicopter
某型直升机主起落架缓冲器振动研究
A place for helicopters to land and take off.
直升飞机场用于直升飞机着陆或起飞的地方
Design of a New Type of Piezoelectric Linear Motor Based on Non-resonant Vibration
一种新型非共振压电直线电机的设计
Vibration Characteristics and Control Stability of a Helicopter Transmission System;
某型直升机主减系统振动特性与控制稳定性
Study on Adaptive Control Law Design of Active Control for Helicopter Vibration;
直升机振动主动控制自适应控制律设计研究
Character Simulation Research on the Absorber for Stabilized Platform on the Armed Copter
武装直升机用稳定平台减振器特性的仿真研究
Lateral-torsional coupled vibration characteristics of transmission of a new type helicopter
某新型直升机传动系统弯-扭耦合振动特性研究
Experiments of Vibration Reduction Effect of Particle Damping on Helicopter Rotor Blade
颗粒阻尼对直升机旋翼桨叶减振效果的试验
Time-domain Simulation of Active Control of Structural Response for Helicopter in Frequency Domain
直升机结构振动频域主动控制的时域仿真
The Design and Simulation of the ground Test System to the Avonics for the Modern Attack Helicopter;
现代武装直升机电子设备地面综合测试系统的设计研究
and there were no engines light enough at that time to provide the power to lift a helicopter and its pilot off the ground.
而且当时也没有那么轻的发动机提供动力把沉重的直升飞机和飞行员提升起来脱离地面。