Longitudinal stability and motion of trimaran wing in ground effect model during take-off

Wing in Ground Effect is a relatively new concept in transportation technology. It is more efficient than conventional aircraft and quicker compared to conventional marine vehicles. However WIG is still not widely use as a public transportation. One of the criteria to be fulfilled is stability. Long...

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Main Author:	Saputra, Noverdo
Format:	Thesis
Language:	English
Published:	2011
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/31287/5/NoverdoSaputraMFKM2011.pdf
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id	my-utm-ep.31287
record_format	uketd_dc
spelling	my-utm-ep.312872018-05-27T07:09:24Z Longitudinal stability and motion of trimaran wing in ground effect model during take-off 2011-09 Saputra, Noverdo TJ Mechanical engineering and machinery Wing in Ground Effect is a relatively new concept in transportation technology. It is more efficient than conventional aircraft and quicker compared to conventional marine vehicles. However WIG is still not widely use as a public transportation. One of the criteria to be fulfilled is stability. Longitudinal stability of WIG craft is still of concern to the designer and the solutions are being investigated. Instability of a small WIG craft occurs when aerodynamic-hydrodynamic phase changes into pure aerodynamic phase during the take-off. In this research, investigations were conducted to determine the longitudinal static and dynamic stability effect of Trimaran WIG craft during takeoff and to verify the factors affecting its stability. Two parameters considered are aerodynamic and hydrodynamic characteristics. The investigation resorts to vortex lattice method and examines the effects of flat ground and end plate on the performance of aerodynamic characteristic of the WIG craft. Planing hull has been chosen for the hull shape of the WIG craft due to higher speed takeoff. The hydrodynamics of prismatic planing surfaces, presented by Savitsky, is used to calculate the hydrodynamic characteristic. Numerical result is compared to the experimental results and against published data. The Static Stability Margin (SSM) for longitudinal static stability of Trimaran WIG model has been investigated and using the classical aircraft motion modification and calculating the aerodynamic, hydrostatic and hydrodynamic forces, the complete equation of motion that uses a small perturbation assumption for WIG during takeoff has been derived and solved. Finally, dynamic stability for Trimaran WIG during take-off has been investigated and analyzed using Routh-Hurwitz Stability Criterion and Control Anticipation Parameter (CAP). 2011-09 Thesis http://eprints.utm.my/id/eprint/31287/ http://eprints.utm.my/id/eprint/31287/5/NoverdoSaputraMFKM2011.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Saputra, Noverdo Longitudinal stability and motion of trimaran wing in ground effect model during take-off
description	Wing in Ground Effect is a relatively new concept in transportation technology. It is more efficient than conventional aircraft and quicker compared to conventional marine vehicles. However WIG is still not widely use as a public transportation. One of the criteria to be fulfilled is stability. Longitudinal stability of WIG craft is still of concern to the designer and the solutions are being investigated. Instability of a small WIG craft occurs when aerodynamic-hydrodynamic phase changes into pure aerodynamic phase during the take-off. In this research, investigations were conducted to determine the longitudinal static and dynamic stability effect of Trimaran WIG craft during takeoff and to verify the factors affecting its stability. Two parameters considered are aerodynamic and hydrodynamic characteristics. The investigation resorts to vortex lattice method and examines the effects of flat ground and end plate on the performance of aerodynamic characteristic of the WIG craft. Planing hull has been chosen for the hull shape of the WIG craft due to higher speed takeoff. The hydrodynamics of prismatic planing surfaces, presented by Savitsky, is used to calculate the hydrodynamic characteristic. Numerical result is compared to the experimental results and against published data. The Static Stability Margin (SSM) for longitudinal static stability of Trimaran WIG model has been investigated and using the classical aircraft motion modification and calculating the aerodynamic, hydrostatic and hydrodynamic forces, the complete equation of motion that uses a small perturbation assumption for WIG during takeoff has been derived and solved. Finally, dynamic stability for Trimaran WIG during take-off has been investigated and analyzed using Routh-Hurwitz Stability Criterion and Control Anticipation Parameter (CAP).
format	Thesis
qualification_level	Master's degree
author	Saputra, Noverdo
author_facet	Saputra, Noverdo
author_sort	Saputra, Noverdo
title	Longitudinal stability and motion of trimaran wing in ground effect model during take-off
title_short	Longitudinal stability and motion of trimaran wing in ground effect model during take-off
title_full	Longitudinal stability and motion of trimaran wing in ground effect model during take-off
title_fullStr	Longitudinal stability and motion of trimaran wing in ground effect model during take-off
title_full_unstemmed	Longitudinal stability and motion of trimaran wing in ground effect model during take-off
title_sort	longitudinal stability and motion of trimaran wing in ground effect model during take-off
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2011
url	http://eprints.utm.my/id/eprint/31287/5/NoverdoSaputraMFKM2011.pdf
_version_	1747815767398678528

Longitudinal stability and motion of trimaran wing in ground effect model during take-off

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