Theoretical Study of Ground Effect on Fixed Wing and Rotary Wing Aerodynamics |
Author(s): |
| Sonia Chalia , Amity University Haryana; Manish Kumar Bharti, Amity University Haryana |
Keywords: |
| Aerodynamics, Induced Drag, Downwash, Lift, Angle of attack, Wingtip vortices, Ground effect |
Abstract |
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The main objective of the present work is to study the complete phenomena of ground effect and changes in aerodynamic behaviour of the aircraft and helicopter in close proximity to the earth surface because of modified air flow pattern around them due to ground effect. The study is showing that flight in close ground proximity is more aerodynamically efficient than flight in freestream at the same angle of attack. The ground effect results more lift to drag ratio, reduced induced drag, wider wingtip vortex which reduces downwash angle, therefore, less power requirement, cheaper hover flight and high rotor blade efficiency. It also results delaying take-off and landing, reduction in stall angle as ground clearance decreases due to higher adverse pressure gradient. The methods considered by pilots to come out of ground effect (OGE) have also been studied. |
Other Details |
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Paper ID: IJSRDV5I30682 Published in: Volume : 5, Issue : 3 Publication Date: 01/06/2017 Page(s): 668-671 |
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