scholarly journals An Adaptive Configuration Method to Multi-Cards in Launch Vehicle Ground Test System

2015 ◽  
Author(s):  
Y.W. Cai ◽  
G.F. Xu
Keyword(s):  
Launch Vehicle ◽  
Test System ◽  
Ground Test

Lessons Learned in Predicting Launch Vehicle Vibroacoustic Environments

1997 ◽  
Vol 40 (2) ◽  
pp. 38-42
Author(s):  
Carole Tanner
Keyword(s):  
Launch Vehicle ◽  
Lessons Learned ◽  
Prediction Methods ◽  
Launch Vehicles ◽  
Flight Data ◽  
Vehicle Systems ◽  
Ground Test

Lessons learned in predicting the vibroacoustic environments for launch vehicles are reviewed. Elements cover prediction methods, ground test experiences, use of flight data in extrapolating environments, and flight data results for DoD launch vehicle systems.

Modeling and Analysis of the Ground Experiment for Restricted Three-Body Problem

2014 ◽  
Vol 926-930 ◽  
pp. 3084-3087
Author(s):  
Hao Yang Li ◽  
Zhi Kun She ◽  
Bai Xue ◽  
Wang Jie Qiu ◽  
Zhi Ming Zheng
Keyword(s):  
Mathematical Model ◽  
Body Problem ◽  
Test System ◽  
Body Motion ◽  
Ideal Condition ◽  
Restricted Three Body Problem ◽  
Three Body Problem ◽  
Ground Test ◽  
Three Body ◽  
The Ideal

This paper analyzes the restricted three-body problems in the ground test systems. First, under the ideal condition, after analyzing the forces on the spacecraft in the rotating coordinates, a mathematical model of elliptic restricted three-body motion is founded. Second, for the restricted three-body problem in the ground test system, the forces on the test ball are analyzed and the corresponding elliptic mathematical model apart from the perturbation is founded. Then, based on the two models founded above, the similarity between the ideal spatial model and the ground simulation model is analyzed.

Study on Special Vehicle’s Handling Stability by Test Technology

2014 ◽  
Vol 623 ◽  
pp. 3-9
Author(s):  
Yuan Zhao ◽  
Hong Jie Cheng ◽  
Yan Liu ◽  
Zhao Jun Wu
Keyword(s):  
Detection System ◽  
Test System ◽  
Test Method ◽  
Steering Wheel ◽  
Fast Evaluation ◽  
The Road ◽  
Circular Test ◽  
Special Vehicle ◽  
On Line ◽  
Ground Test

According to handling stability problem in using process of special vehicle, its evaluation test method is researched and analyzed. Referring to national profession norm, the on-line detection system of handling stability of special vehicle is constructed, and the design idea of evaluation software is also illustrated. Finally, based on the constructed testing system, the proving ground test of special vehicle is carried out, including the transient response test of steering wheel impulse input, the test of steering wheel returnability, and the steady static circular test. The test results indicate the feasibility and validity of the constructed test system, which provides technical support for detection on-line and fast evaluation of handling stability of special vehicle in riding process, and enhance the road safety during the riding process of missile weapon system.

scholarly journals Estimation of Vibration Characteristics of a Space Manipulator From Air Bearing Supported Test Data

2021 ◽  
Vol 8 ◽  
Author(s):  
Haiquan Li ◽  
Qingqing Wei ◽  
Jianxun Liang ◽  
Weiyan Ren ◽  
Zixin Tang ◽  
...  
Keyword(s):  
Test Data ◽  
Joint Stiffness ◽  
Test System ◽  
Vibration Characteristics ◽  
Air Bearing ◽  
Air Bearings ◽  
Space Manipulator ◽  
Space Manipulators ◽  
Ground Test ◽  
Stiffness And Damping

Space manipulators have attracted much attention due to their implications in on-orbit servicing in recent years. Air bearing based support equipment is widely used for ground test to offset the effect of gravity. However, an air bearing support introduces a new problem caused by additional inertial and mass properties. Additional mass and inertial load will influence the dynamics behavior, especially stiffness information and vibration response of the whole ground test system. In this paper, a set of procedures are presented to remove the influence of air bearings and identify the true equivalent joint stiffness and damping from the test data of a motor-braked space manipulator with an air bearing support. First, inertia parameters are identified. Then, the equivalent joint stiffness and damping are determined by using a genetic algorithm (GA) method. Finally, true vibration characteristics of the manipulator are estimated by removing the additional inertia caused by the air bearings. Moreover, simulations and experiments are carried out to validate the presented procedures.

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