Free Chapters. Different Types of Kites Used
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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. -
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. -
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). -
Airborne Wind Energy
Airborne Wind Energy Jochem Weber, Melinda Marquis, Aubryn Cooperman, Caroline Draxl, Rob Hammond, Jason Jonkman, Alexsandra Lemke, Anthony Lopez, Rafael Mudafort, Mike Optis, Owen Roberts, and Matt Shields National Renewable Energy Laboratory NREL is a national laboratory of the U.S. Department of Energy Technical Report Office of Energy Efficiency & Renewable Energy NREL/TP-5000-79992 Operated by the Alliance for Sustainable Energy, LLC August 2021 This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. Contract No. DE-AC36-08GO28308 Airborne Wind Energy Jochem Weber, Melinda Marquis, Aubryn Cooperman, Caroline Draxl, Rob Hammond, Jason Jonkman, Alexsandra Lemke, Anthony Lopez, Rafael Mudafort, Mike Optis, Owen Roberts, and Matt Shields National Renewable Energy Laboratory Suggested Citation Weber, Jochem, Melinda Marquis, Aubryn Cooperman, Caroline Draxl, Rob Hammond, Jason Jonkman, Alexsandra Lemke, Anthony Lopez, Rafael Mudafort, Mike Optis, Owen Roberts, and Matt Shields. 2021. Airborne Wind Energy. Golden, CO: National Renewable Energy Laboratory. NREL/TP-5000-79992. https://www.nrel.gov/docs/fy21osti/79992.pdf. NREL is a national laboratory of the U.S. Department of Energy Technical Report Office of Energy Efficiency & Renewable Energy NREL/TP-5000-79992 Operated by the Alliance for Sustainable Energy, LLC August 2021 This report is available at no cost from the National Renewable Energy National Renewable Energy Laboratory Laboratory (NREL) at www.nrel.gov/publications. 15013 Denver West Parkway Golden, CO 80401 Contract No. DE-AC36-08GO28308 303-275-3000 • www.nrel.gov NOTICE This work was authored by the National Renewable Energy Laboratory, operated by Alliance for Sustainable Energy, LLC, for the U.S. -
(12) United States Patent (10) Patent No.: US 8,534,609 B2 Stiewe (45) Date of Patent: Sep
USOO8534609B2 (12) United States Patent (10) Patent No.: US 8,534,609 B2 Stiewe (45) Date of Patent: Sep. 17, 2013 (54) TRACTION KITE WITH HIGH PROJECTED 5,433,401. A * 7/1995 Ricketts .................... 244, 153 R. LEADING EDGE 6,520,454 B2* 2/2003 Winner ... ... 244, 155A 7,032,864 B2 * 4/2006 Logosz ... ... 244,153 R. 7,093,803 B2 * 8/2006 Culp ......................... 244, 153 R. (75) Inventor: Peter Stiewe, Rodanthe, NC (US) 7,374,133 B2 * 5/2008 Legaignoux et al. ......... 244f145 2004/01 13019 A1* 6/2004 Lynn ......................... 244, 153 R. (73) Assignee: Ride Best, LLC, Rodanthe, NC (US) 2005/0230556 Al 10/2005 Legaignoux et al. 2006/0192055 A1* 8/2006 Shogren ........................ 244f145 (*) Notice: Subject to any disclaimer, the term of this 38885 A. 358. NSCOSO et Cal.i. .............. 2. patent 1s ised Olisted under 35 2009, O152391 A1* 6, 2009 McWhirk ....................... 244, 30 U.S.C. 154(b) by 176 days. 2009,01791 12 A1* 7, 2009 Gu ................. ... 244,153 R. 2009/0277997 A1* 11/2009 Shogren et al. ... 244, 153 R. (21) Appl. No.: 13/178,942 OTHER PUBLICATIONS (22) Filed: Jul. 8, 2011 www.globekites.com; http://www.globekites.com/gkblog/?p=6 O O Please see three photographs filed herewith in connection with the (65) Prior Publication Data above website. www.kiteboardingevolution.com Please see attached 11 pages of US 2012/OOO6945A1 Jan. 12, 2012 screenshots filed herewith as IDSAttachment4. Related U.S. Application Data * cited by examiner (60) issional application No. 61/362.463, filed on Jul. 8, Primary Examiner — Christopher P Ellis Assistant Examiner — Medhat Badawi (51) Int. -
Kitesurfing a - Z
Kitesurfing A - Z A Airfoil (aerofoil): a wing, kite, or sail used to generate lift or propulsion. Airtime: the amount of time spent in the air while jumping. AOA, Angle of Attack: also known as the angle of incidence (AOI) is the angle with which the kite flies in relation to the wind. Increasing AOA generally gives more lift. AOI, Angle of Incidence: angle which the kite takes compared to the wind direction Apparent wind, AW: The wind felt by the kite or rider as they pass through the air. For instance, if the true wind is blowing North at 10 knots and the kite is moving West at 10 knots, the apparent wind on the kite is NW at about 14 knots. The apparent wind direction shifts towards the direction of travel as speed increases. Aspect Ratio, AR: the ratio of a kites width to height (span to chord). Kites can range between a high aspect ratio of about 5.0 or a low aspect ratio of about 3.0. AR5: The legendary first 4 line inflatable kite manufactured by Naish. ARC: a foil kite manufactured by Peter Lynn B Back Loop: a kitesurfing trick where the kiter rotates backward (begins by turning their back toward the kite) while throwing his/her feet above the level of his/her head. Back Roll: same as a back loop but without getting their feet up high. Batten: a length of carbon or plastic which adds stiffness or shape to the kite or sail. Bear Away / Bear Off: change your direction of travel to a more downwind direction. -
Types of Stunt Kites
www.my-best-kite.com Table of Contents Introduction.............................................................................................................................6 Chapter format........................................................................................................................................ 6 A Tip For The Frugal............................................................................................................................... 6 STUNT KITES........................................................................................................................7 Delta, Diamond, Parafoil or Quad?.........................................................................................................7 Types Of Stunt Kites............................................................................................................................... 8 The Peter Powell Stunt Kite.......................................................................................................12 Classic Steerable Diamond Kite...........................................................................................................12 'Cayman' Peter Powell Stunt Kite.........................................................................................................12 A History: The Peter Powell Stunt Kite..................................................................................................13 Dual Line Parafoil Kites..............................................................................................................15 -
Design of a High Altitude Wind Power Generation System
A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science Design of a High Altitude Wind Power Generation System Imran Aziz Linköping University Institute of Technology Department of Management and Engineering Division of Machine Design Linköping University SE-581 83 Linköping Sweden 2013 ISRN: LIU-IEI-TEK-A--13/01725—SE Acknowledgements The work presented in this thesis has been carried out at the Division of Machine Design at the Department of Management and Engineering (IEI) at Linköping University, Sweden. I am very grateful to all the people who have supported me during the thesis work. First of all, I would like to express my sincere gratitude to my supervisors Edris Safavi, Doctoral student and Varun Gopinath, Doctoral student, for their continuous support throughout my study and research, for their guidance and constant supervision as well as for providing useful information regarding the thesis work. Special thanks to my examiner, Professor Johan Ölvander, for his encouragement, insightful comments and liberated guidance has been my inspiration throughout this thesis work. Last but not the least, I would like to thank my parents, especially my mother, for her unconditional love and support throughout my whole life. Linköping, June 2013 Imran Aziz i Abstract One of the key points to reduce the world dependence on fossil fuels and the emissions of greenhouse gases is the use of renewable energy sources. Recent studies showed that wind energy is a significant source of renewable energy which is capable to meet the global energy demands. However, such energy cannot be harvested by today’s technology, based on wind towers, which has nearly reached its economical and technological limits. -
Multicopter-Based Launching and Landing of Lift Power Kites
Chapter 19 Multicopter-Based Launching and Landing of Lift Power Kites Florian Bauer, Christoph M. Hackl, Keyue Smedley and Ralph M. Kennel Abstract Crosswind kite power is a promising alternative wind power technology. However, unlike the rotor blades of a conventional wind turbine, a kite needs to be launched prior to power generation and needs to be landed during low-wind con- ditions or for maintenance. This study proposes multicopter-based concepts for an autonomous solution. Basic system components and different system configurations are discussed. Static and dynamic feasibility analyses are carried out. Results show that such systems are feasible and have advantages compared to other launching and landing concepts. However, also the weaknesses of such systems become apparent e.g. the increased airborne mass. 19.1 Introduction Crosswind kite power is becoming more and more attractive in both academia and industry (see e.g. [2,8, 31] and references therein) and is considered as promising alternative wind power technology: Compared to conventional wind turbines, kites can harvest wind power at higher altitudes with stronger and steadier winds, but Florian Bauer (B) Ralph M. Kennel Institute for Electrical· Drive Systems and Power Electronics, Technical University of Munich, Arcisstrasse 21, 81477 Munich, Germany e-mail: fl[email protected] Christoph M. Hackl Research Group “Control of renewable energy systems”, Munich School of Engineering, Tech- nical University of Munich, c/o Wind Energy Institute, Boltzmannstrasse 15, 85748 Garching, Germany Keyue Smedley The Henry Samueli School of Engineering, Power Electronics Laboratory, University of California, Irvine, CA 92697, USA 463 464 Florian Bauer, Christoph M.