Results 21 to 30 of about 291 (106)
An investigation of coupling ship/rotor flowfield using steady and unsteady rotor methods
Engineering Applications of Computational Fluid Mechanics, 2017 A coupling numerical methodology has been developed using the Navier–Stokes solver for ship/rotor flowfield simulation during the helicopter shipboard launch.
Yongjie Shi, Yi Xu, Kun Zong, Guohua Xu
doaj +1 more source
The effect of ship shape and anemometer location on wind speed measurements obtained from ships [PDF]
, 2005 Wind speed measurements obtained from ship-mounted anemometers are biased by the distortion of the airflow around the ship's hull and superstructure. These wind speed measurements are used both in numerical weather prediction and in climate studies and ...
Yelland, M.J., Moat, B.I., Molland, A.F.
core
COMPUTATIONAL FLUID DYNAMICS ANALYSIS OF HELICOPTER DOWNWASH/SHIP AIRWAKE INTERACTION FLOWFIELD [PDF]
, 2022 There are problems specific to the helicopter/ship dynamic interface that limit helicopter operations and cause difficulty associated with landing on a moving platform.
Alabaş, Hüsamettin Alperen +1 more
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Study of Flow Control Device For Ship Airwakes
, 2021 Nowadays combined operation of a ship and helicopter is ubiquitous in every naval organization. The operation of a helicopter onto smaller naval ships over the sea is a challenging task and results into very complex flow phenomena due to the presence of ship air wakes, strong velocity gradients coupled with widely varying turbulence length scales. This
openaire +1 more source
NUMERICAL INVESTIGATION OF SHIP AIRWAKES INTERACTION WITH HELICOPETR FUSELAGE
, 2021 In recent years, ship helicopter combined operation strengthens the naval forces across the globe. However, the launch and recovery of a helicopter from the flight deck of a ship can be a formidable task for the experienced test pilot. This difficulty arises due to several harsh environmental conditions like ship’s airwake, wind-over-deck (WOD ...
Shrish Shukla, G. Mulani
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Helicopter Shipboard Operation: Effect of Atmospheric Boundary Layer on Turbulent Ship Airwake and Rotor Aerodynamic Loads [PDF]
, 2022 This paper studies the effect of two different boundary layer models on the airwake of the Simple Frigate Shape 1 and further on the unsteady aerodynamic loads of a scaled helicopter model operating inside the ship airwake.
Morelli, M. C. +3 more
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A Residual PPO Method for Shipboard Helicopter Landing Control
AerospaceShipboard helicopter landing in the near-deck region requires stable attitude regulation and high-precision deck-relative motion control under substantial model uncertainty and environmental disturbances, conditions under which conventional model-based ...
Xiao Chang, Jianliang Ai
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Turbulent Airwake Estimation from Helicopter–Ship Wind-Tunnel Data [PDF]
This paper presents a stochastic approach for modeling the turbulent airwake suitable for real-time simulation of the helicopter–ship dynamic interface.
Taymourtash, Neda, Quaranta, Giuseppe
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AerospaceCarrier-based aircraft recovery is a critical and challenging phase in maritime operations due to the turbulent airwake generated by aircraft carriers, which significantly increases the workload of flight control systems and pilots.
Xiaoxi Yang +4 more
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De-risking flight trials using airwake simulations [PDF]
, 2018 Air operations around naval vessels are inherently challenging and a major contributor to this is the turbulent airflow around the vessels, colloquially known as the airwake.
Ward, C M, C M Ward
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