scholarly journals A Mission Performance Evaluation Approach for Civil UAS Applications

2018 ◽  
Vol 221 ◽  
pp. 05006
Author(s):  
Ekaterina Fokina ◽  
Jens Feger ◽  
Mirko Hornung
Keyword(s):  
Performance Evaluation ◽  
Aircraft Design ◽  
Unmanned Aircraft ◽  
Evaluation Tool ◽  
Design And Optimization ◽  
Evaluation Approach ◽  
Air Vehicle ◽  
Simulation And Evaluation ◽  
Mission Simulation ◽  
Uas Applications

The Unmanned Aircraft Systems (UAS) mission fulfilment grade is determined by performance capabilities of the system elements, such as UAV flight performance, sensor parameters, energy consumption and communication abilities. The mission simulation and evaluation tool chain developed at the Institute of Aircraft Design allows to assess the system effectiveness in terms of civil and commercial UAS applications and by this to evaluate trade off studies regarding the compatibility between the air vehicle, the sensor payload and the mission. The presented approach for mission performance evaluation is based on the calculation of an overall mission performance index implemented in the UAS design and optimization processes.

scholarly journals A rapid performance evaluation approach for lower mobility hybrid robot based on gravity-center position

2020 ◽  
Vol 103 (2) ◽  
pp. 003685042092713
Author(s):  
Chensheng Wang ◽  
Fang Su ◽  
Yanqin Zhao ◽  
Hongda Liu ◽  
Yonghao Guo ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Evaluation Index ◽  
Vector Model ◽  
Gravity Center ◽  
Design And Optimization ◽  
Evaluation Approach ◽  
Center Position ◽  
Lower Mobility ◽  
Performance Evaluation Index ◽  
Natural Frequency Analysis

This article develops a rapid performance evaluation approach for lower mobility hybrid robot, which provides guidance for manipulator evaluation, design, and optimization. First, a general position vector model of gravity center for the lower mobility hybrid robot in the whole workspace is constructed based on a general inverse kinematic model. A performance evaluation index based on gravity-center position is then proposed, where the coordinates pointing to the supporting direction are selected as the evaluation index of the robot performance. Furthermore, the credibility of the evaluation approach is verified from a 5-DOF hybrid robot (TriMule) by comparing with the condition number and the first natural frequency. Analysis results demonstrate that the evaluation index can not only reflect the performance spatial distribution in the whole workspace but also is sensitive to the performance difference caused by mass distribution. The proposed performance evaluation approach provides a new index for the rapid design and optimization of the cantilever robot.

scholarly journals Wing and Engine Sizing by Using the Matching Plot Technique

2017 ◽  
Vol 5 (1) ◽  
pp. 48-59 ◽  
Author(s):  
Nikolajs Glīzde
Keyword(s):  
Design Process ◽  
Systems Engineering ◽  
Design Method ◽  
Aircraft Design ◽  
Unmanned Aircraft ◽  
Development Phase ◽  
Unmanned Aircraft System ◽  
Air Vehicle ◽  
Aircraft System ◽  
Concise Description

Abstract The research focuses on the development of an Unmanned Aircraft System. For design purposes, a rather new design method called Systems Engineering Approach is used. Development of the whole system takes much time and effort. This paper contains a concise description of the research on the preliminary development phase of Unmanned Aircraft System air vehicle. The method was first introduced by NASA and later developed by authors of books on aircraft design used for information purposes for design and are mentioned in references. The obtained results are rather realistic and promising for further design process. The method is simple and understandable, and it should be used more often to make it more steady and reliable.

OBE performance evaluation tool for Electrical Engineering laboratory

2010 ◽  
Author(s):  
Nani Fadzlina Naim ◽  
Hadzli Hashim ◽  
Mohd Fuad Abdul Latip ◽  
Husna Zainol Abidin ◽  
Suzi Seroja Sarnin
Keyword(s):  
Performance Evaluation ◽  
Electrical Engineering ◽  
Evaluation Tool

scholarly journals Port performance evaluation tool based on microsimulation model

2017 ◽  
Vol 101 ◽  
pp. 05011
Author(s):  
Jzolanda Tsavalista Burhani ◽  
Febri Zukhruf ◽  
Russ Bona Frazila
Keyword(s):  
Performance Evaluation ◽  
Microsimulation Model ◽  
Evaluation Tool

Development of a Hypersonic Aircraft Design Optimization Tool

2014 ◽  
Vol 553 ◽  
pp. 847-852 ◽  
Author(s):  
Benjamin J. Morrell ◽  
David J. Munk ◽  
Gareth A. Vio ◽  
Dries Verstraete
Keyword(s):  
Structural Design ◽  
Current Practice ◽  
Thermal Stresses ◽  
Aircraft Design ◽  
Material Strength ◽  
Aircraft Structure ◽  
Aerodynamic Loads ◽  
Design And Optimization ◽  
Hypersonic Aircraft ◽  
Strength And Stiffness

The design and optimization of hypersonic aircraft is severely impacted by the high temperatures encountered during flight as they can lead to high thermal stresses and a significant reduction in material strength and stiffness. This reduction in rigidity of the structure requires innovative structural concepts and a stronger focus on aeroelastic deformations in the early design and optimisation of the aircraft structure. This imposes the need for a closer coupling of the aerodynamic and structural design tools than is current practice. The paper presents the development of a multi-disciplinary, closely coupled optimisation suite for hypersonic aircraft. An overview of the setup and structure of the optimization suite is given and the integration between the Tranair solver, used to determine the aerodynamic loads and temperatures, and MSC/NASTRAN, used for the structural sizing and design, will be given.

UAV Autopilot Design for the AUVSI, UAS International Competition

2009 ◽  
Author(s):  
Muhammad M. Mahmood ◽  
Md S. Chowdhury ◽  
Rizwan Ihsan ◽  
Umar M. Yousaf ◽  
Mohamed W. Afifi ◽  
...  
Keyword(s):  
Undergraduate Students ◽  
Flight Control ◽  
Computer Network ◽  
Imaging System ◽  
Aircraft Design ◽  
Unmanned Aircraft ◽  
American University ◽  
Ground Station ◽  
Aerial Imaging ◽  
Safety Features

This paper provides an overview of the first participation of the design developed by the undergraduate students of American University of Sharjah to meet the requirements laid forth in the 2008 Association for Unmanned Vehicle Systems International (AUVSI) Student UAS competition. The overall objective of the competition is to fly autonomously over a GPS waypoint defined route and also to identify and locate ground based targets within a confined area. To meet the objectives an unmanned aircraft is equipped with autonomous functionality and aerial imaging system. A ground station and supportive software to keep track of the aircraft routine and log the raw data gained from the flight is also designed. Achieving complete success depends upon mission elements which include autonomous take-off and landing, autonomous control and waypoint navigation. The onboard equipment used was a flight control computer network, IMU, GPS, an air data system and a camera. Additionally, safety features such as manual override was also installed. Presented in this report are aircraft design and testing, the processes involved in accomplishing the goal, and the results and achievements.

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