Design of Miniaturized Underwater Vehicle with Propulsions for Deep-sea Research Applications
abstract: The ocean is vital to the health of our planet but remains virtually unexplored. Many researchers seek to understand a wide range of geological and biological phenomena by developing technologies which enable exploration of the deep-sea. The task of developing a technology which can with...
Other Authors: | |
---|---|
Format: | Doctoral Thesis |
Language: | English |
Published: |
2014
|
Subjects: | |
Online Access: | http://hdl.handle.net/2286/R.I.25888 |
id |
ndltd-asu.edu-item-25888 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-asu.edu-item-258882018-06-22T03:05:26Z Design of Miniaturized Underwater Vehicle with Propulsions for Deep-sea Research Applications abstract: The ocean is vital to the health of our planet but remains virtually unexplored. Many researchers seek to understand a wide range of geological and biological phenomena by developing technologies which enable exploration of the deep-sea. The task of developing a technology which can withstand extreme pressure and temperature gradients in the deep ocean is not trivial. Of these technologies, underwater vehicles were developed to study the deep ocean, but remain large and expensive to manufacture. I am proposing the development of cost efficient miniaturized underwater vehicle (mUV) with propulsion systems to carry small measurement devices and enable deep-sea exploration. These mUV's overall size is optimized based on the vehicle parameters such as energy density, desired velocity, swimming time and propulsion performance. However, there are limitations associated with the size of the mUV which leads to certain challenges. For example, 2000 m below the sea level, the pressure is as high as 3000 psi. Therefore, certain underwater vehicle modules, such as the propulsion system, will require pressure housing to ensure the functionality of the thrust generation. In the case of a mUV swimming against the deep-sea current, a thrust magnitude is required to enable the vehicle to overcome the ocean current speed and move forward. Therefore, the size of the mUV is limited by the energy density and the propeller size. An equation is derived to miniaturize underwater vehicle while performing with a certain specifications. An inrunner three-phase permanent magnet brushless DC motor is designed and fabricated with a specific size to fit inside the mUV's core. The motor is composed of stator winding in a pressure housing and an open to water ring-propeller rotor magnet. Several ring-propellers are 3D printed and tested experimentally to determine their performances and efficiencies. A planer motion optimal trajectory for the mUV is determined to minimize the energy usage. Those studies enable the design of size optimized underwater vehicle with propulsion to carry small measurement sensors and enable underwater exploration. Developing mUV's will enable ocean exploration that can lead to significant scientific discoveries and breakthroughs that will solve current world health and environmental problems. Dissertation/Thesis Merza, Saeed Adil (Author) Meldrum, Deirdre R (Advisor) Chao, Shih-Hui (Committee member) Shankar, Praveen (Committee member) Saripalli, Srikanth (Committee member) Berman, Spring Melody (Committee member) Arizona State University (Publisher) Mechanical engineering brushless DC motor deep-sea ocean propeller propulsion underwater vehicle eng 106 pages Doctoral Dissertation Mechanical Engineering 2014 Doctoral Dissertation http://hdl.handle.net/2286/R.I.25888 http://rightsstatements.org/vocab/InC/1.0/ All Rights Reserved 2014 |
collection |
NDLTD |
language |
English |
format |
Doctoral Thesis |
sources |
NDLTD |
topic |
Mechanical engineering brushless DC motor deep-sea ocean propeller propulsion underwater vehicle |
spellingShingle |
Mechanical engineering brushless DC motor deep-sea ocean propeller propulsion underwater vehicle Design of Miniaturized Underwater Vehicle with Propulsions for Deep-sea Research Applications |
description |
abstract: The ocean is vital to the health of our planet but remains virtually unexplored. Many researchers seek to understand a wide range of geological and biological phenomena by developing technologies which enable exploration of the deep-sea. The task of developing a technology which can withstand extreme pressure and temperature gradients in the deep ocean is not trivial. Of these technologies, underwater vehicles were developed to study the deep ocean, but remain large and expensive to manufacture. I am proposing the development of cost efficient miniaturized underwater vehicle (mUV) with propulsion systems to carry small measurement devices and enable deep-sea exploration. These mUV's overall size is optimized based on the vehicle parameters such as energy density, desired velocity, swimming time and propulsion performance. However, there are limitations associated with the size of the mUV which leads to certain challenges. For example, 2000 m below the sea level, the pressure is as high as 3000 psi. Therefore, certain underwater vehicle modules, such as the propulsion system, will require pressure housing to ensure the functionality of the thrust generation. In the case of a mUV swimming against the deep-sea current, a thrust magnitude is required to enable the vehicle to overcome the ocean current speed and move forward. Therefore, the size of the mUV is limited by the energy density and the propeller size. An equation is derived to miniaturize underwater vehicle while performing with a certain specifications. An inrunner three-phase permanent magnet brushless DC motor is designed and fabricated with a specific size to fit inside the mUV's core. The motor is composed of stator winding in a pressure housing and an open to water ring-propeller rotor magnet. Several ring-propellers are 3D printed and tested experimentally to determine their performances and efficiencies. A planer motion optimal trajectory for the mUV is determined to minimize the energy usage. Those studies enable the design of size optimized underwater vehicle with propulsion to carry small measurement sensors and enable underwater exploration. Developing mUV's will enable ocean exploration that can lead to significant scientific discoveries and breakthroughs that will solve current world health and environmental problems. === Dissertation/Thesis === Doctoral Dissertation Mechanical Engineering 2014 |
author2 |
Merza, Saeed Adil (Author) |
author_facet |
Merza, Saeed Adil (Author) |
title |
Design of Miniaturized Underwater Vehicle with Propulsions for Deep-sea Research Applications |
title_short |
Design of Miniaturized Underwater Vehicle with Propulsions for Deep-sea Research Applications |
title_full |
Design of Miniaturized Underwater Vehicle with Propulsions for Deep-sea Research Applications |
title_fullStr |
Design of Miniaturized Underwater Vehicle with Propulsions for Deep-sea Research Applications |
title_full_unstemmed |
Design of Miniaturized Underwater Vehicle with Propulsions for Deep-sea Research Applications |
title_sort |
design of miniaturized underwater vehicle with propulsions for deep-sea research applications |
publishDate |
2014 |
url |
http://hdl.handle.net/2286/R.I.25888 |
_version_ |
1718700505453035520 |