Design, Optimization and Testing of High-Speed Magnetoelectric Generator for Power Supply of Micro-Unmanned Aerial Vehicles

2018 ◽  
Vol 20 (5) ◽  
pp. 267-276
Author(s):  
A.A. Gerasin ◽  
◽  
F.R. Ismagilov ◽  
V.E. Vavilov ◽  
A.M. Veselov ◽  
...  
Keyword(s):  
Design Optimization ◽  
Unmanned Aerial Vehicles ◽  
Power Supply ◽  
High Speed ◽  
Aerial Vehicles

MULTIDIMENSIONAL SIMULATIONS AND TEST FIRES OF A HYDROGEN-FUELED RAMJET WITH AN ANNULAR DETONATIVE COMBUSTOR AT APPROACHING AIR FLOW OF MACH 2 AND 1.5

2020 ◽  
Author(s):  
V. S. IVANOV ◽  
◽  
V. S. AKSENOV ◽  
S. M. FROLOV ◽  
P. A. GUSEV ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicles ◽  
High Speed ◽  
Constant Pressure ◽  
Air Flow ◽  
Thermodynamic Cycle ◽  
Aerial Vehicles ◽  
Mach Numbers

Modern high-speed unmanned aerial vehicles are powered with small-size turbojets or ramjets. Existing ramjets operating on the thermodynamic cycle with de§agrative combustion of fuel at constant pressure are efficient at flight Mach numbers M ranging from about 2 to 6.

Design and flight-stability analysis of a closed fixed-wing unmanned aerial vehicle formation controller

2018 ◽  
Vol 233 (8) ◽  
pp. 1045-1054 ◽  
Author(s):  
Jialong Zhang ◽  
Bing Xiao ◽  
Maolong Lv ◽  
Qiang Zhang
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Collision Avoidance ◽  
High Speed ◽  
Physical Simulation ◽  
Controller Design ◽  
Formation Flight ◽  
External Factors ◽  
Flight Stability ◽  
Aerial Vehicles ◽  
Closed Formation

This article addresses a flight-stability problem for the multiple unmanned aerial vehicles cooperative formation flight in the process of the closed and high-speed flight. The main objective is to design a cooperative formation controller with known external factors, and this controller can keep the consensus of attitude and position and reduce the communication delay between any two unmanned aerial vehicles and increase unmanned aerial vehicles formation cruise time under the known external factors. Known external factors are taken into consideration, and longitude maneuvers using nonlinear thrust vectors were employed with unsteady aerodynamic models, according to the attitude and position of unmanned aerial vehicles, which were employed as corresponding input signals for studying the dynamic characteristics of unmanned aerial vehicles formation flight. In addition, the relative distance between any two unmanned aerial vehicles was not allowed to exceed their safe distance so that the controller could perform collision avoidance. An analysis of formation flight distance error shows that it converged to a fixed value that well ensured unmanned aerial vehicles formation flight stability. The experimental results show that the controller can improve the speed of a closed formation effectively and maintain the stability of formation flight, which provides a method for closed formation flight controller design and collision avoidance for any two unmanned aerial vehicles. Meanwhile, the effectiveness of proposed controller is fully proved by semi-physical simulation platform.

scholarly journals Classification of robotic battery service systems for unmanned aerial vehicles

2018 ◽  
Vol 161 ◽  
pp. 03023
Author(s):  
Tien Ngo ◽  
Mehmet Guzey ◽  
Vladimir Dashevsky
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Power Supply ◽  
Landing Site ◽  
Operating Conditions ◽  
Joint Work ◽  
Operator Experience ◽  
Aerial Vehicles ◽  
Robotic Platforms ◽  
Algorithmic Model

Existing examples of prototypes of ground-based robotic platforms used as a landing site for unmanned aerial vehicles are considered. In some cases, they are equipped with a maintenance mechanism for the power supply module. The main requirements for robotic multi-copter battery maintenance systems depending on operating conditions, required processing speed, operator experience and other parameters are analyzed. The key issues remain questions of the autonomous landing of the unmanned aerial vehicles on the platform and approach to servicing battery. The existing prototypes of service robotic platforms are differed in the complexity of internal mechanisms, speed of service, algorithms of joint work of the platform and unmanned aerial vehicles during the landing and maintenance of the battery. The classification of robotic systems for servicing the power supply of multi-copter batteries criteria is presented using the following: the type of basing, the method of navigation during landing, the shape of the landing pad, the method of restoring the power supply module. The proposed algorithmic model of the operation of battery power maintenance system of the multi-copter on ground-based robotic platform during solving the target agrarian problem is described. Wireless methods of battery recovery are most promising, so further development and prototyping of a wireless charging station for multi-copter batteries will be developed.

scholarly journals ONBOARD PHOTOINTAKES ON THE BASIS OF HIGH-SPEED LOW-FORMAT MATRIXES IN THE INFRARED RANGE

2019 ◽  
Vol 7 ◽  
pp. 22-26
Author(s):  
Andrey Chernikov ◽  
Sergey Kravets ◽  
Vladimir Legky ◽  
Valeriy Edvabnik ◽  
Igor Gibin
Keyword(s):  
Remote Sensing ◽  
Unmanned Aerial Vehicles ◽  
High Speed ◽  
Infrared Range ◽  
Aerial Vehicles ◽  
Spectral Ranges

The analysis of parameters of high-speed small-format matrices operating in the infrared (IR) range is presented. The considered matrices can be placed on unmanned aerial vehicles (UAVs) for remote sensing of underlying surfaces. The types of devices, their purpose, the main spectral ranges and principles of operation are considered.

Análisis Y Diseño De Una Aeronave No Tripulada Para Uso Agrícola

2017 ◽  
Vol 13 (6) ◽  
pp. 135
Author(s):  
Javier Enrique Orna Chávez ◽  
Otto Fernando Balseca Sampedro ◽  
Jorge Isaías Caicedo Reyes ◽  
Diego Fernando Mayorga Pérez ◽  
Edwin Fernando Viteri Núñez ◽  
...  
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Unmanned Aerial Vehicles ◽  
Power Supply ◽  
Agricultural Sector ◽  
Flight Time ◽  
Unmanned Aircraft ◽  
Commercial Application ◽  
Autonomous Flight ◽  
Aerial Vehicles

The present research proposes to diversify the use of unmanned aerial vehicles (UAV) with rotating wings for applications in the agricultural sector. For this we have analyzed and designed an unmanned aircraft. In first instance the applications of this type of aircraft in this sector were reviewed to determine possible design conditions that would aid in the sizing and design of the aircraft. Once the requirements had been determined, aerodynamic analysis was carried out to size up and launch the required power output for the craft. This in order to optimize the weight and autonomous fight time to finally design an aircraft prototype built in carbon fiber with the aid of fault theories as applied to composite materials. At the end of the research, an unmanned aircraft of 6 rotors, each with an installed power supply of 700W was designed. The aircraft has an autonomous flight time of 40 minutes without a payload, 20 minutes with a payload of 3Kg, and 8 minutes with a payload of 5Kg. The commercial application of these aircraft are the monitoring of land and fumigation in inaccessible areas.

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