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Guidelines for Preparing Master's Theses
LIQUID FORCE KITE CONTROL SYSTEM DESIGN A Senior Project submitted to the Faculty of California Polytechnic State University, San Luis Obispo In Partial Fulfillment of the Requirements for the Degree of Bachelor of Science in Industrial and Mechanical Engineering by Brendan Kerr, Alden Simmer, Brodie Sutherland March 2017 ABSTRACT Liquid Force Kite Control System Design Brendan Kerr, Alden Simmer, Brodie Sutherland Kiteboarding is an ocean sport wherein the participant, also known as a kiter, uses a large inflatable bow shaped kite to plane across the ocean on a surfboard or wakeboard. The rider is connected to his or her kite via a control bar system. This control system allows the kiter to steer the kite and add or remove power from the kite, in order to change direction and increase or decrease speed. This senior project focused on creating a new control bar system to replace a control bar system manufactured by a kiteboarding company, Liquid Force. The current Liquid Force control bar has two main faults, extraneous components and a lack of ergonomic design. Our team aimed to eliminate unneeded components and create a more ergonomic bar. By eliminating components, the bar would also be more cost effective to produce by using less material and requiring less time to manufacture. We first conducted a literature review into the areas of kiteboarding control systems and handle ergonomics. Based on studies done on optimal grip diameters for reducing forearm stress we concluded that the diameter for the bar grip should be at least a centimeter less than the maximum grip of the user. -
Soft Kites—George Webster
Page 6 The Kiteflier, Issue 102 Soft Kites—George Webster Section 1 years for lifting loads such as timber in isolated The first article I wrote about kites dealt with sites. Jalbert developed it as a response to the Deltas, which were identified as —one of the kites bending of the spars of large kites which affected which have come to us from 1948/63, that their performance. The Kytoon is a snub-nosed amazingly fertile period for kites in America.“ The gas-inflated balloon with two horizontal and two others are sled kites (my second article) and now vertical planes at the rear. The horizontals pro- soft kites (or inflatable kites). I left soft kites un- vide additional lift which helps to reduce a teth- til last largely because I know least about them ered balloon‘s tendency to be blown down in and don‘t fly them all that often. I‘ve never anything above a medium wind. The vertical made one and know far less about the practical fins give directional stability (see Pelham, p87). problems of making and flying large soft kites– It is worth nothing that in 1909 the airship even though I spend several weekends a year —Baby“ which was designed and constructed at near to some of the leading designers, fliers and Farnborough has horizontal fins and a single ver- their kites. tical fin. Overall it was a broadly similar shape although the fins were proportionately smaller. —Soft Kites“ as a kite type are different to deal It used hydrogen to inflate bag and fins–unlike with, compared to say Deltas, as we are consid- the Kytoon‘s single skinned fin. -
Kite Lines Makes Ist of Subscribers Available to Organizations Hot Colors Luuuiiiy Luya~ ~Fferinginformation, Products Or Services O * Nterest to Kiters
QUARTERLY JOURNAL OF THE WORLDWIDE KITE COMMUNITY scoveries Buggies on New Stature SkyGallery: in Brazil & a Roll.. .plus for Australia 3 Bold Is the Colombia How to Make Biggest Event Color of Reza Your Own Free 80 Page Catalog of Kites Get the kites you want from Into The Wind, America's leading mail order kite company. We're known for our unmatched selection and fast service, and we guarantee your satisfaction with everything you buy. Great Prices on Sport Kites! Now you can have it all! The best kites, the best service and competitive prices from the best Kite Catalog. Evervthin~-I u for the Kiteflier Hundreds of kites to choose from Kitemaking supplies and tools Best selection of kite line anywhere Into The WindTM 1408-G Pearl Street, Boulder, Colorado 80302 Call toll free: 1 -800-541-03 14 Cite Lines is the comprehensive in jpectra StarTM,the world's leadin! Easy to Learn 11 journal of kiting, uniquely serv * inify the broadest range of kiting manufacturer of kites introduce: t is published by Aeolus Press, Inc. wi a revolution in stunt kites. Fron ~ditorialoffices at 8807 Liberty Road, Tired of the boring single <andallstown,Maryland 21133, USA, the labs of our high perforrnancc )hone 410-922-1212, fax 410-922-426 division, Spectra SportsTM,comes Color Bags? Cite Lines is endorsed by the Internatio a breakthrough; The Flying Edge Utefliers Association and is on file in librarie Here are the. )f the National Air and Space Museum, Stunt KiteTMseries. Engineered imithsonian; National Oceanic and 1 itmospheric Sciences Administration; with aerodynamic features and NEW KITE BAGS / Jniversity of Notre Dame Sports and the performance of models cost 1 I lesearch Collection; and Idbrary of C t is included in the Index to Craft [ou ing five to ten times as much, thc ublished by the Crafts Council of Au. -
A Decade of Kiting Memories by Peter and Sarah Bindon
THE In this edition Spring 2020 INSIDE: A decade of kiting memories by Peter and Sarah Bindon Also in this edition: ALSO IN THIS EDITION: Thailand and Malaysia Kite Tour Kite Competition – Mike Rourke wins again! KAP made easy with Alan Poxon Sarah Bindon takes the Questionnaire Challenge John’s new kite ...tails Alicja from Poland kite workshop Annual General Meeting NEW Chairman – Keith Proctor NEW Membership Secretary – Ian Duncalf A message from Keith; At the 2020 AGM I gave up the role of Membership Secretary that I Ian had held since 2011/12, and handed it over to Ian Duncalf who I believe is much better qualified to improve and update the system to allow online membership application and Keith with outgoing renewal. I took on the role of chairman but I’m still not sure how this Chairman Len Royles all came about! So this is my first official post in the NKG magazine. This year I think will be described as an “annus horribilis” for the Len stood down as disruption of everyday life as we know it. I fear that for a lot of people, Chairman after six life will never be the same again. We have never experienced this years but will continue before. But if we all follow the guidelines about staying at home, to play an active part washing hands, keeping your distance from others we can pick up in the Group by taking our kite-flying again, possibly later this year and if not then next year. the childrens’ rainbow Good luck and good health to you all and your loved ones in the delta kites to festivals. -
Beginners Guide to Kite Boarding
The Complete Beginner’s Guide About Kitesurfing What Is Kitesurfing? For some, it does not even ring a bell although, for others, it means everything and they build their life around it! Whether you have already witnessed it in person on your last vacation to the beach, maybe over the internet in your news feed or even in pop culture, for sure it made you wonder… What the heck are these guys doing dangling in the air under that big parachute? And how are they even doing it? If we were to talk to someone in the early 1960s about space exploration, let alone landing on the moon they would have thought we were crazy. What if we were to tell someone today that they can have the time of their life by practicing a water sport that involves standing up on a surfboard, strapped in a waist harness while being pulled along by a large kite up 25 meters in the air? That person probably wouldn’t believe it. Well, here we are today with hundreds of thousands of people learning and practicing kiteboarding every year. In this Complete Beginner’s Guide, we will go from the inception of the sport to where it is today and everything in between to understand what kitesurfing is all about. This guide will inform you about the history and origins of kitesurfing, the equipment, the environment, what it takes to become a kiter as well as the benefits of becoming one. Moreover, we will cover everything there is to know about the safety aspects of this action sport and the overall lifestyle and culture that has grown around it. -
Optimal Control of Power Kites for Wind Power Production
FACULDADE DE ENGENHARIA DA UNIVERSIDADE DO PORTO Optimal Control of Power Kites for Wind Power Production Tiago Costa Moreira Maia PREPARATION FOR THE MSC DISSERTATION Master in Electrical and Computers Engineering Supervisor: Fernando Arménio da Costa Castro e Fontes Co-Supervisor: Luís Tiago de Freixo Ramos Paiva February 7, 2014 c Tiago Costa Moreira Maia, 2014 Abstract Ground based wind energy systems have reached the peak of their capacity. Wind instability, high cost of installations and small power output of a single unit are some of the the limitations of the current design. In order to become competitive the wind energy industry needs new methods to extract energy from the wind. The Earth’s surface creates a boundary layer effect on the wind that increases its speed with altitude. In fact, with altitude the wind is not only stronger, but steadier. In order to capitalize these strong streams new extraction methods were proposed. One of these solutions is to drive a generator using a tethered kite. This concept allows very large power outputs per unit. The major goal of this work is to study a possible trajectory of the kite in order to maximize the power output using an optimal control software - Imperial College London Optimal Control Software (ICLOCS), model and optimize it. i ii Contents 1 Introduction1 1.1 Context . .1 1.2 Motivation . .2 1.3 Objectives . .2 1.4 Document Structure . .2 2 State of the Art5 2.1 High Wind Energy . .5 2.2 High Wind Energy Systems . .6 2.3 The Laddermill . .9 2.3.1 Dynamic Model the Tethered Kite System . -
Power Kite Wind Speed Guide
Power kite wind speed guide Continue Photographer: Nathan Kirkman 1 of 13 Changing wind on the roof, a trellis photovoltaic solar panel topped with ten feet high vertical axis wind turbines -first ever approved in the city of Chicago for residential use. Together, they produce about 10,000 kilowatt-hours of electricity per year, which is about half the building's electrical needs, said project architect Greg Gibson. 2 of 13 Change in Wind owners Lisa and Frank Mauceri in their unique home; The Bucktown building is the only LEED for a gold-certified single-family home in Illinois. 3 of 13 For ultimate comfort in the living room, the owners chose the warmest parts of the Togo that Michelle Ducaroy designed for Ligne Roset in the 1970s and the wool rose carpet of Nani Markina; Lighting includes a pair of vintage Artimede floor lamps and a Foscarini Supernova pendant from YLighting. 4 of 13 Wind Change eco-savvy Valcutin kitchen. 5 of 13 Changing Wind Architect Michael Wilkinson (left) with colleague Greg Gibson 6 of 13 Changing Wind Transparent Kartell Furniture 7 of 13 Changes in the wind of solar bricks on the roof absorb sunlight during the day and mark the way to the roof of the garden at night 8 of the 13 Wind Change Enkasonic sound management matting (usually used to isolate the acoustic floor collection) is a decorative element in the first floor of the Mauceris Office. 9 of the 13 Wind Change Shiny white valcutine cabinets in the main bath are tempered by soft-gray concrete countertops; The mirror reflects the back staircase to the green roof. -
KITE LINES / WINTER-SPRING 1996 I KAMC -- Volume 11, Number 4, Winter-Spring 1996
QUARTERLY JOURNAL OF THE WORLDWIDE KITE COMMUNITY w - - WINTER-SPRING 1996, VOL. 11 NO. 4 FOR ALL YOUR KITING NEEDS Made in the UISIAl PACIFIC HEIGHTS, INC. P.O.Box 460729 San Francisco, CA 94146 Tel(415) 550-7155 FLU (41 5) 550- 1942 I I - 4 / KITE LINES / WINTER-SPRING 1996 I KAMC -- Volume 11, Number 4, Winter-Spring 1996 Contents 3 Features Posrcaras rrom ran@/ LU No organization, no schedule, just m-i-1-e-s of kites. First in a series by Dave Gomberg. Synthetic Dog Team: Kites / 25 How did three adventurers ski the Greenland ice cap? With Quadrifoils. By Eric Philips. Kite Patents / 28 A history of kite patents plus how to get a patent. Questions answered by Ed Grauel. Roundtable Mallorca / 32 Seven artists gather at the Miro Foundation for Art Volant to exhibit, fly and talk kites. Their views and manifesto are as creative as their kites. By Tal Streeter. Nepal's Kites: Above the Clouds / 36 Photographs by Stephen C. Lowe. Two views of kiting in Nepal: "Always Time for Kites" Stephen C. Lowe and "Cutting is the Greatest Fun" by Nirmal M. Tuladhar. Skiing the Beach: A Profile of Stan Rogers / 47 The ebullientinventor promotes skis, not wheels behind kites. By Steve McKerrow. My Friends the Diisseldorfers / 52. One of Europe's great kite clubs and how it lives. By Me1 Govig. Letter from the Publisher / 9 Letters / 11 Caribbean Kite Company Design Workshop / 12 1099 N.E. 45 Street The Tekaweya stunter by Michael Graves. Ft. Lauderdale, FL 33334 U.S.A. -
An Introduction and Brief History
KITES An Introduction and Brief History SKY WIND WORLD.ORG FLYING A ROKAKKU - FLYING BUFFALO PROJECT HISTORY From China kites spread to neighboring countries and across the seas to the Pacific region. At the same time they spread across Burma, India and arriving in North Africa about 1500 years ago. They did not arrive in Europe or America until much later probably via the trade routes Kites are thought to have originated in China about 3000 years ago. One story is that a fisherman was out on a windy day and his hat blew away and got caught on his fishing line which was then when these areas developed. blown up in to the air. Bamboo was a ready source of straight sticks for spars and silk fabric was available to make a light covering, then in the 2nd century AD paper was invented and is still used to this day. PHYSICS Kites fly when thrust, lift, drag and gravity are balanced. The flying line and bridle hold the kite at an angle to the wind so that the air flows faster across the top than the bottom producing the lift. THE PARTS OF A KITE 1 THE SAIL • This can be made of any material such as paper, fabric or plastic. • It is used to trap the air. The air must have somewhere to escape otherwise it spills over the front edge and makes the kite wobble. This can be done by using porous fabric or making it bend backwards to allow the air to slip smoothly over the side. -
Motor/Generator Design Optimization for a Drag Power Kite
Bachelor thesis, research internship, advanced seminar, or master thesis Motor/Generator Design Optimization for a Drag Power Kite Contact/Applications to: Florian Bauer,∗ florian:bauer@tum:de Announcement date: February 23, 2020 Motivation Power generating kites have the potential to generate clean energy at a low cost competitive with coal power plants or cheaper without subsidies (see e.g. [1, 2, 3] and references therein). \Drag power" kites generate power with onboard wind turbines and generators by flying fast crosswind motions, see Fig. 1. Electrical power is transmitted to the ground at a medium voltage level via electric cables in the tether. Figure 1: 20 kW \drag power" kite visualization of kiteKRAFT (image source: http://kitekraf t:de/Images/20kWProduct:png, accessed: Aug 11, 2019). ∗Institute for Electrical Drive Systems and Power Electronics, Department of Electrical and Computer Engi- neering, Technical University of Munich 1 Tasks, Suggested Solution Approach, Expected Results The eight gear-less motors/generators (electrical machines) of kiteKRAFT's kite are currently standard low-voltage RC components, shown in Fig. 2. In the next generation kite, an optimized Figure 2: Powertrain of kiteKRAFT's 5 kW kite (image source: https://miro:medium:com/max /1000/1*hcj4kgUC1NLrYeP -CLJAw:jpeg, accessed: Feb. 23, 2020). machine for the optimal DC link voltage of around 800 V shall be designed. Starting from a literature survey and sourcing information from electrical machine designers and manufacturers, an optimal machine shall be designed and a prototype shall be built and tested. Starting point is the literature list below and a longer literature list provided upon start of work. -
Deformation and Aerodynamic Performance of a Ram-Air Wing
Deformation and Aerodynamic Performance of a Ram-Air Wing Master thesis by Aart de Wachter Graduation committee: Prof.Dr. W.J. Ockels September 30 th , 2008 Ir. L.M.M. Boermans Ir. J. Breukels Delft University of Technology Dr. R. Ruiterkamp Faculty of Aerospace Engineering Copyright Attention is drawn to the fact that copyright of this disseration rests with the author. This copy of the dissertation has been supplied on condition that anyone who consults it is understood to recognise that its copyright rests with its author and that no quotation from this dissertation and no information derived from it may be published without the prior written consent of the author. Please contact [email protected] for written permission to quote or publish any of the contents of this dissertation. Aart de Wachter 2008 v vi Preface Before I wrote the project proposal for my master thesis in November 2007 first I wrote down all the things that I wanted to learn and do before I would leave the University. Then I tried to cast all these things into one project. With a few minor changes and additions the project was accepted. It became a project that was even more exciting than winning 3 rd price in the AIAA aircraft design competition in 2003. Because this is a very multidisciplinairy report it won’t go into all the underlying theory of the treated subjects. But to make reading easier there is a basic introduction into the most important aspects of this report. The reader should at least be familiar with the basics of aerodynamics. -
The Air-Water Sports Equipment: the Upper Part Categorization
The 40th International Conference on Mechanics of Solids, Acoustics and Vibrations & The 6th International Conference on “Advanced Composite Materials Engineering” ICMSAV2016 & COMAT2016 Brasov, ROMANIA, 24-25 November 2016 THE AIR-WATER SPORTS EQUIPMENT: THE UPPER PART CATEGORIZATION Cristina Miclea1, Marius Hodirnau2, Carol Csatlos3 1 Faculty of Food and Tourism, Transilvania University of Brasov, [email protected], [email protected], [email protected] Abstract: The paper presents a classification of existing kites both by construction and use, and those used in air-water sports being detailed as they represent the most used at the moment. The article also include a history of kite. The categories of kite presented are: leading edge inflatable kites and foil kites. First category includes the C-kite, the hybrid kite and. C- style hybrid kite, and the second, the classic foil kite and the valve foil kite. Keywords: kite, air, water, sport, classification.) 1. INTRODUCTION Due to the social and economic actual context, characterized by an accelerated rhythm the need for relaxation and leisure began to be increasingly filled by practicing extreme sports, especially those can be performed on air and water or both. Among these is kiteboarding, a sport practiced on the water surface. The equipment required for this sport is made up of: wing, a control system consists of lines and a control bar, and a board. Figure 1: Classification of kites by wing design The kite, the upper component of the assembly, had a journey that took more than 2000 years. It was invented in China and for its construction, was used silk mounted on a bamboo frame (strong, lightweight and elastic).