Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 83 for “"Flight testing"”.
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Flight Testing Small UAVs for Aerodynamic Parameter Estimation
<p>A flight data acquisition system was developed to aid unmanned vehicle designers in verifying the vehicle's design performance. The system is reconfigurable and allows the designer to choose the correct combination of complexity, risk, and cost for a given flight test. The designer can also …
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Flight Testing Small, Electric Powered Unmanned Aerial Vehicles
Flight testing methods are developed to find the drag polar for small UAVs powered by electric motors with fixed-pitch propellers. Wind tunnel testing was used to characterize the propeller-motor efficiency. The drag polar was constructed using data from flight tests. The proposed methods were …
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Subsystem development and flight testing of an electroaerodynamic UAV
… with the optimization tool GPkit and with the flight mission goal of steady-level flight. This thesis describes the design and testing of several subsystems of the UAV, including the power system, the communication system, the aircraft tail, and the aircraft launching system. The power system …
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Design, optimization and flight testing of a micro air vehicle
… A detailed description of the manufacture and testing of the prototype is also included in this thesis.
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Opportunities for lean thinking in aircraft flight testing and evaluation
… in cost and cycle time reduction. Recently, the flight testing community has been faced with similar challenges. This paper investigates whether Lean principles can be applied to aircraft flight testing and evaluation to help meet these goals. Specific objectives are to identify opportunities for …
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Study of Rubber Damped Skin Friction Gages for Transonic Flight Testing
… for application in 3D, unsteady, transonic flight conditions. Design conditions required optimum gage performance at altitudes ranging from 15,000 to 45,000 feet, Mach numbers ranging from 0.6 to 0.99 resulting in shear values of 0.3 to 1.5 psf. under vibration conditions up to 8.0 grms over …
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In-Flight Testing & Verification of an Adaptive Distributed Fault-Tolerant Control Architecture
… the development of an experimental setup for testing and validating an adaptive consensus algorithm and a bio-inspired health management architecture. The distributed adaptive consensus algorithm gathers information states from the agents, processes the shared information, and decides the …
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DESIGN, DEVELOPMENT, AND FLIGHT TESTING OF A MODULAR AVIONICS AND VEHICLE MONITORING SYSTEM
… document various issues that can arise during flight, which could lead to unexpected flight performance and/or failure. A modular avionics bay was designed to provide flexibility, allow for new hardware requirements and future system improvements, and ensure reliable and proper connections for …
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Wind and Wake Sensing with UAV Formation Flight: System Development and Flight Testing
… and enhanced control for small UAVs during flight. On the other hand, the existence of wind can be advantageous since it can lead to fuel savings and longer duration flights through dynamic soaring or thermal soaring.;Wakes are an effect of the lift distribution across an aircraft's wing or …
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Evaluation of Pilot and Quadcopter Performance from Open Loop Mission Oriented Flight Testing
Ease of control, portability and efficiency in versatile applications have made Unmanned Aerial Vehicle (UAV) very popular. Considering various usefulness, safe operation of UAV is important and to ensure safe operation, proper synergy between pilot and UAV is mandatory. For this reason, individual …
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Modeling and flight testing of differential thrust and thrust vectoring on a small UAV
… differential thrust, and thrust vectored flight configurations, and verify this modeling through simulation and flight testing experiments. This thesis outlines the modeling process, simulator development, design, and implementation of a propulsion assisted control system for the WVU …
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Design, flight testing and PID control gain tuning for lift-plus-cruise EVTOL octocopter
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-12-01
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L1 adaptive control flight testing and extension to nonlinear reference systems with unmatched uncertainty
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-04-06 without embargo terms
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Low-Speed Flight Testing and System Identification of a Small-Scale Supersonic Uncrewed Aerial Vehicle
… prototype development program, sustained flight of a second-generation demonstrator was achieved. Comprehensive development consisted of: modular design and fabrication; ongoing geometry, inertia, and power accommodations; and semi- and fully autonomous flight testing to acquire state, …
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Delta-development of a critical space mechanism based on on-ground and in-flight testing experience
… and mitigate this issue. Additionally, on-ground testing of LPF engineering qualification model (EQM) highlighted non-idealities in the mechanism, that could have affected the performance. A new baseline GPRM has been defined for LISA, in order to mitigate the anomalies observed during LPF, but …
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UAS Model Identification and Simulation to Support In-Flight Testing of Discrete Adaptive Fault-Tolerant Control Laws
… that is performed using DATCOM followed by the flight test data. This data is acquired from conducting an intensive flight testings program of a fixed-wing UAS to determine the state-space model of the aircraft. A discrete state-space system is reconstructed from these models to derive …
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The assessment of a rotorcraft simulation model in autorotation by means of flight testing a light gyroplane
The simulation and flight testing of a light gyroplane aircraft is performed obtaining results regarding the flight dynamics attributes of the vehicle. The main aim of the work was to assess the ability of a mathematical model to simulate rotorcraft in the autorotative flight state. Additionally, …
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Design and Construction of a 1/3-Scale, 1986 Cessna 172P Flight-Test Aircraft
<p>The incredible cost of prototype flight testing can be a very limiting factor in the optimization of new designs as they proceed from the drawing board to the flight line. The use of low-cost scaled models to predict full-scale prototype performance is the focus of this project. It will be shown …
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Framework for Estimating Performance and Associated Uncertainty of Modified Aircraft Configurations
Flight testing has been the historical standard for determining aircraft airworthiness - however, increases in the cost of flight testing and the accuracy of inexpensive CFD promote certification by analysis to reduce or replace flight testing. A framework is introduced to predict the performance …
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Implementation of a Low Cost Micro Electro Mechanical Systems Inertial Navigation Solution
… solution for General Aviation (GA) aircraft and flight testing aircraft. This low cost solution uses a Global Positioning System (GPS) coupled with an Inertial Navigation Solution (INS) to provide a more accurate, stable navigation solution that can be acceptable for aircraft navigation. Lab VIEW …
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