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Now showing items 71-80 of 103
Portable Recovery System for an Unmanned Aircraft with a Straight Wing and a Tractor Propeller
(2019-07)
The recovery system development effort for an unmanned aircraft (UA) has been documented and examined. The development effort existed to satisfy a customer's need to recover an 80 lb aircraft on unimproved terrain. The ...
Computational and experimental investigation of Brazilian Free-Tailed bat ear tubercles on an airfoil leading edge
(2020-05)
Preliminary experimental data has indicated that the tubercles on Brazilian Free-Tailed bat ears, when applied to an airfoil leading edge, reduce drag and delay aerodynamic stall. This study's objective was to investigate ...
Implementation of a local path planning algorithm for unmanned aerial vehicles
(2021-07)
As the presence of Unmanned Aircraft Systems (UASs) become more prominent today and in the future. They are used in a variety of ways to solve solutions for a variety of tasks. UASs that are battery-powered typically have ...
Design and development of a controllable wing loading unmanned aerial system
(2019-12)
Vertical takeoff and landing (VTOL) unmanned aerial systems (UAS) offer all the benefits of wing borne flight without the need for conventional takeoff and landing (CTOL) infrastructure. There exists many effective VTOL ...
Turboprop performance and acoustic evaluation for a small unmanned aircraft variable-cycle engine
(2019-05)
Range and endurance of small unmanned aircraft systems (sUAS) driven by gas turbine engines are constrained by high thrust specific fuel consumption (TSFC) resulting from low overall efficiency. This study evaluates the ...
Watch your step! Towards predicting osteoarthritis onset based on side-to-side imbalances
(2022-05)
Osteoarthritis (OA) is a debilitating disease characterized by the erosion of articular cartilage at the extremity of bones. OA contributes to economic burdens, pain, and abnormal locomotion to accommodate for loss of ...
Flight dynamics integration approach, proportional robustness analysis, and H_[infinity] S/KW mixed sensitivity controller design for roll control with Active Flow Control
(2021-12)
Recent investigation into use of Active Flow Control (AFC) technology has shown the potential benefits of AFC actuated aircraft control without control surfaces, but because of the complicated nature of such devices no ...
Evaluation of granular distribution and propellant grain length on tri-modal ammonium perchlorate solid rocket motors
(2022-05)
This paper presents an evaluation on the effects that variances in ammonium perchlorate particles size, total aluminum content ratio, and solid rocket motor geometry has on tri-modal ammonium perchlorate composite solid ...
Development of a micro air vehicle for meteorological soundings
(2021-12)
To have accurate forecasting models for weather systems, data must be collected on the thermodynamic structure of the Atmospheric Boundary Layer (ABL). Currently this information is gathered using weather balloons, but ...
Comparative study of small UAS fuel tank fabrication methods
(2023-05)
This paper will discuss the development, manufacturing, and testing of various fuel tanks intended for use in small unmanned aircraft with the intent of limiting weight, cost, and manufacturing complexities. The main goals ...