Autonomous flight test using angle of UAV’s velocity vector

The paper describes the existing problems in determination of all scheduled evaluations of missile warhead performance during flight tests and puts forward one of the possible methods of problem solving. Besides, the paper gives the results of investigation of the properties of the factor of dynamic relations between the velocity vector modulus and longitudinal acceleration of missile warheads within the atmospheric passive flight leg – the dynamic relation factor is constant in different flight test conditions. The notion of the reference dynamic relation factor is reasonably introduced for both parameters under study in order to provide reliable determination of parameter estimates, and hence, to conduct a complete analysis of experimental launch results.

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Designing Autonomous Flight Capabilities for UAV and OPV – A Comparison of Development and Flight Test Experiences

AIAA AVIATION 2020 FORUM ◽

10.2514/6.2020-3269 ◽

2020 ◽

Author(s):

Martin E. Kügler ◽

Florian Holzapfel

Keyword(s):

Flight Test ◽

Autonomous Flight

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Autonomous Flight-Test Data in Support of Safety of Flight Certification

Journal of Air Transportation ◽

10.2514/1.d0220 ◽

2020 ◽

pp. 1-14

Author(s):

Donald H. Costello ◽

Jason Jewell ◽

Huan Xu

Keyword(s):

Test Data ◽

Flight Test ◽

Autonomous Flight

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MEMS-SINS/GPS/Magnetometer Integrated Navigation System for Small Unmanned Aerial Vehicles

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.568-570.976 ◽

2014 ◽

Vol 568-570 ◽

pp. 976-986 ◽

Cited By ~ 1

Author(s):

Cun Xiao Miao ◽

Juan Juan Cao ◽

Yang Bin Ou

Keyword(s):

Low Power ◽

Real Time ◽

Navigation System ◽

Inertial Sensors ◽

Unscented Kalman Filter ◽

Flight Test ◽

Integrated Navigation ◽

Autonomous Flight ◽

Integrated Navigation System ◽

Small Uav

The constraints of weight, volume and power for Small unmanned air vehicle (UAV) restrict the application of sensors with heavy and good performance and powerful processors. This paper presents a real-time solution of autonomous flight navigation and its results for small UAV by applying small, cheap, low precision and low-power integrated navigation system, which includes Strap-down Inertial Navigation System (SINS) based on Micro-electro-mechanical system (MEMS) inertial sensors, Global Positioning System (GPS) receiver and magnetometer. The Square-Root Unscented Kalman filter (SR-UKF) for data fusion using in this MEMS-SINS/GPS/ magnetometer integrated navigation system provides continuous and reliable navigation results for the loops of guidance and control for the small UAV with autonomous flight. The whole integrated navigation system algorithm is implemented within low-power embedded microprocessors. The real-time flight test results show that the MEMS-SINS/GPS/magnetometer integrated navigation system is effective and accurate.

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Control System Designed for a Four Rotors Unmanned Aerial Vehicle

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.716-717.1527 ◽

2014 ◽

Vol 716-717 ◽

pp. 1527-1530

Author(s):

Wei Ming He ◽

Guo Jing He ◽

Jian Qi Zhang

Keyword(s):

Control System ◽

Flight Control ◽

Self Assembly ◽

Flight Test ◽

The Body ◽

Body Frame ◽

Hardware Platform ◽

Autonomous Flight ◽

Aerial Vehicle ◽

Set Up

In order to achieve the autonomous flight control of the quadrotor, an autonomous flight control hardware platform was set up, with a self-assembly aircraft as the body frame. The control system was designed according to the principle of quadrotor. It includes the hardware and code. A flight control model for the four rotor aircraft was established, so as to analyze and optimize the performance. Flight test was down. And the results showed that the quadrotor was able to flight stably and be well controlled.

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Galactic orbits of stars

Symposium - International Astronomical Union ◽

10.1017/s0074180900105340 ◽

1966 ◽

Vol 25 ◽

pp. 93-97

Author(s):

Richard Woolley

Keyword(s):

Globular Cluster ◽

Potential Field ◽

High Velocity ◽

Velocity Vector ◽

Variable Stars ◽

The Sun ◽

Proper Motions ◽

Rr Lyrae ◽

The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

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