publication . Conference object . Thesis . 2005

active and passive flow control over the flight deck of small naval vessels

Daniel Shafer; Terence Ghee;
Open Access
  • Published: 27 Apr 2005
  • Publisher: American Institute of Aeronautics and Astronautics
  • Country: United States
Abstract
Helicopter operations in the vicinity of small naval surface vessels often require excessive pilot workload. Because of the unsteady flow field and large mean velocity gradients, the envelope for flight operations is limited. This experimental investigation uses a 1:144 scale model of the U.S. Navy destroyer DDG-81 to explore the problem. Both active and passive flow control techniques were used to improve the flow field in the helicopterâ s final decent onto the flight deck. Wind tunnel data was collected at a set of grid points over the shipâ s flight deck using a single component hotwire. Results show that the use of porous surfaces decreases the unsteadiness...
Subjects
free text keywords: backward facing step, frigate ship airwake, flow control, helicopter/ship operations, airwake, Hangar, Flow control (data), Shear layer, Engineering, business.industry, business, Cockpit, Flow (psychology), Flight operations, Marine engineering, Deck, Scale model
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publication . Conference object . Thesis . 2005

active and passive flow control over the flight deck of small naval vessels

Daniel Shafer; Terence Ghee;