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Feasibility study on improving of 5-seater helicopter forward flight speed

In this study, two 5-seater helicopters that are in the same FAR 27 category were chosen for the forward flight speed comparison. In order to improve the helicopter cruising speed, the main rotor blade of a helicopter that posses a lesser flight speed was modified through the usage of different numb...

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Main Author: Nik Mohd., Nik Ahmad Ridhwan
Format: Thesis
Language:English
Published: 2006
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/5565/1/NikAhmadRidhwanMFKM2006.pdf
http://eprints.utm.my/id/eprint/5565/
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spelling my.utm.55652018-09-17T03:03:08Z http://eprints.utm.my/id/eprint/5565/ Feasibility study on improving of 5-seater helicopter forward flight speed Nik Mohd., Nik Ahmad Ridhwan TJ Mechanical engineering and machinery In this study, two 5-seater helicopters that are in the same FAR 27 category were chosen for the forward flight speed comparison. In order to improve the helicopter cruising speed, the main rotor blade of a helicopter that posses a lesser flight speed was modified through the usage of different number of main rotor blade (from 3 to 4 blades), different value of blade solidity and the usage of new engine with better performance. For design and analysis purposes, the appropriate theory i.e. the closed-form equation from blade element theory (BET) which deals with both the blade dynamics and aerodynamics was used. By considering the retreating blade stall, figure of merit and the growth of reverse flow area, the new combination of rotor and engine that is suitable for a better helicopter cruising speed performance were obtained. For data comparison, the results obtained from BET analysis then were compared with the results obtained from the computational fluid dynamic (CFD) based analysis. Using CFD approach, the FLUENT software was used and the multiple reference frames (MRF) method was used to simulate the helicopter main rotor at steady and level flight condition. Finally, the performance results of the current and the new rotor design obtained from the BET and CFD analysis then were compared with the other helicopter forward flight speed performance and found that they were in good agreement. 2006-07 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/5565/1/NikAhmadRidhwanMFKM2006.pdf Nik Mohd., Nik Ahmad Ridhwan (2006) Feasibility study on improving of 5-seater helicopter forward flight speed. Masters thesis, Universiti Teknologi Malaysia, Faculty of Mechanical Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:61961
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Nik Mohd., Nik Ahmad Ridhwan
Feasibility study on improving of 5-seater helicopter forward flight speed
description In this study, two 5-seater helicopters that are in the same FAR 27 category were chosen for the forward flight speed comparison. In order to improve the helicopter cruising speed, the main rotor blade of a helicopter that posses a lesser flight speed was modified through the usage of different number of main rotor blade (from 3 to 4 blades), different value of blade solidity and the usage of new engine with better performance. For design and analysis purposes, the appropriate theory i.e. the closed-form equation from blade element theory (BET) which deals with both the blade dynamics and aerodynamics was used. By considering the retreating blade stall, figure of merit and the growth of reverse flow area, the new combination of rotor and engine that is suitable for a better helicopter cruising speed performance were obtained. For data comparison, the results obtained from BET analysis then were compared with the results obtained from the computational fluid dynamic (CFD) based analysis. Using CFD approach, the FLUENT software was used and the multiple reference frames (MRF) method was used to simulate the helicopter main rotor at steady and level flight condition. Finally, the performance results of the current and the new rotor design obtained from the BET and CFD analysis then were compared with the other helicopter forward flight speed performance and found that they were in good agreement.
format Thesis
author Nik Mohd., Nik Ahmad Ridhwan
author_facet Nik Mohd., Nik Ahmad Ridhwan
author_sort Nik Mohd., Nik Ahmad Ridhwan
title Feasibility study on improving of 5-seater helicopter forward flight speed
title_short Feasibility study on improving of 5-seater helicopter forward flight speed
title_full Feasibility study on improving of 5-seater helicopter forward flight speed
title_fullStr Feasibility study on improving of 5-seater helicopter forward flight speed
title_full_unstemmed Feasibility study on improving of 5-seater helicopter forward flight speed
title_sort feasibility study on improving of 5-seater helicopter forward flight speed
publishDate 2006
url http://eprints.utm.my/id/eprint/5565/1/NikAhmadRidhwanMFKM2006.pdf
http://eprints.utm.my/id/eprint/5565/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:61961
_version_ 1643644358138789888
score 13.211869

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