A New Actuator Surface Model with Improved Wake Model for CFD Simulations of Rotorcraft [PDF]
, 2017 Simulations of rotorcraft operating in unsteady flow-fields, manoeuvring flight, or with complex rotor configurations pose a significant challenge to current simulation methods.
Barakos, Geogre +3 more
core
Contributions to the Understanding of Ship Airwakes Using Advanced Flow Diagnostic Techniques [PDF]
, 2020 The objective of this research was to better characterize the complex, three dimensional, unsteady aerodynamic flows produced by the superstructure of a ship, which is referred to as an airwake.
Seth, Dhuree
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Real-Time Monocular Vision System for UAV Autonomous Landing in Outdoor Low-Illumination Environments. [PDF]
Sensors (Basel), 2021 Lin S, Jin L, Chen Z.
europepmc +1 more source
Combined numerical and experimental simulations of unsteady ship airwakes [PDF]
, 2018 To aid pilot training for shipboard helicopter operations, computational fluid dynamics (CFD) is increasingly being performed to model ship airwakes. The calculated velocity field data are exported to the flight simulator as look-up tables.
Alanna Wall, Richard Lee, Weixing Yuan
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New Atmospheric Turbulence Model for Shuttle Applications [PDF]
An updated NASA atmospheric turbulence model, from 0 to 200 km altitude, which was developed to be more realistic and less conservative when applied to space shuttle reentry engineering simulation studies involving control system fuel expenditures is ...
Campbell, C. W. +3 more
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The handling qualities and flight characteristics of the Grumman design 698 simulated twin-engine tilt Nacelle V/STOL aircraft [PDF]
This paper describes three government-conducted, piloted flight simulations of the Grumman Design 698 vertical and short takeoff and landing (V/STOL) aircraft.
Eskey, M. A., Wilson, S. B., III
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VTOL shipboard letdown guidance system analysis [PDF]
Alternative letdown guidance strategies are examined for landing of a VTOL aircraft onboard a small aviation ship under adverse environmental conditions. Off line computer simulation of shipboard landing task is utilized for assessing the relative merits
Karmali, M. S., Phatak, A. V.
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Unsteady Aerodynamic Interaction Between Rotor and Ground Obstacle [PDF]
, 2018 The mutual aerodynamic interaction between rotor wake and surrounding obstacles is complex, and generates high compensatory workload for pilots, degradation of the handling qualities and performance, and unsteady force on the structure of the obstacles.
Barakos, George N. +4 more
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Rotorcraft Research at the NASA Vertical Motion Simulator [PDF]
, 2009 In the 1970 s the role of the military helicopter evolved to encompass more demanding missions including low-level nap-of-the-earth flight and operation in severely degraded visual environments.
Aponso, Bimal Lalith +2 more
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A Wind Tunnel Technique for the Identification of Ship Airwake/Rotor Downwash Coupling [PDF]
, 2011 A wind tunnel study is performed to analyze the interaction between ship airwakes and helicopter rotor downwash. This interaction is of interest to naval aviators and researchers as this phenomenon is thought to limit helicopter flight envelopes and ...
Doane, Stargel R.
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