• UA  uninhabited aircraft, unmanned aircraft,
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• UAD    Unmanned aerial device, uninhabited aerial device
• UAS  uninhabited aircraft system  ,   unmanned aircraft system
  • ICAO Circular No 328
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• UASSG   Unmanned Aircraft Systems Study Group (UASSG)
  • http://tinyurl.com/UASSGgenerallink
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• UAT    User Acceptance Testing   http://en.wikipedia.org/wiki/User_acceptance_testing
• UAT    Universal Access Transceiver
  • http://adsb.tc.faa.gov/WG5_Meetings/Meeting1/UAT-WP-1-03.pdf  Universal Access Transceiver System Description by John Moody, 2000.
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• UAV  unmanned aerial vehicle  , uninhabited aircraft vehicle
  • vectorsite.net/twuav_12.html#m2  UAV Notes
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• UEK  Underwater Electric Kite ®
• UEK  Underwater Energy Kiting
• UFO kite,  or U-Fo, pronounced "you-foe", Ultimate Flying Object     www.windstarkites.com/UFO.htm 
   

• UHMWPE      wiki     Ultra-high-molecular-weight polyethylene (UHMWPE or sometimes shortened to UHMW), also known as high-modulus polyethylene (HMPE) or high-performance polyethylene (HPPE),
   
• UJ  universal joint
• ULL  ultra long line.              Also: ultralight line.
   
• ULLPG (ultra-long-line paragliders)  
  • Two sorts:
    • 1.  Bridle point is close to wing set. Then ULL goes from bridle point to resistive set
    • 2.  Bridle point is at payload pod or resistive set
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• Ultimate Flying Object, U-Fo, UFO, www.windstarkites.com/UFO.htm
• ultrabelt, ultrabelts      InAWES
   
• Ultra______™    trade marking reserved prefixing for transnational AWE products and services from KiteLabGroup
   

• UltraPilot™     UltraWing™   UltraKite™
  and Ultra ____™   from KiteLabGroup
   

• ultra capacitor  or ultracapacitor    | stand alone | Sole Power-Source Applications | An ultracapacitor is a dc device. More specifically, it is an alternating direct-current device with constantly changing voltage that is dependent on the input/output current.    | Art2 |   current limiter?  | "I would try building a wing skin as an ultracap." |
  • Ragheb
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• Ultralight
• Ultralight wing
• Ultralight aircraft
  • http://www.virtualultralightmuseum.com/
• ultrarope, ultrabelt            InAWES

• umbrella
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  • umbrella laddermill          E.g. 2010 AWECS project in China. 
  • Crazy Flying Umbrella kite   video  2:04
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• undercorrection
• underwater kite   (see paravane)
• undulations
• UNFCCC    wiki: United Nations Framework Convention on Climate Change
• unfurl, unfurling, unfurls
• unidirectional
   
• uninhabited aircraft
• unintended startup, unintended flight,
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• Universal Power Processor, or UPPity.     Brooks, Santos ???? "a multi-sprag aggregator for flip-wings & other power sources."
• unistable
   
• unmanned aerial systems   UAS          Subset of UAS are unmanned tethered aerial systems UTAS
• unmanned tethered aerial systems  UTAS  , in other words:  kites   (kite consists of three parts: mooring, tether, lifting body; the mooring might move in various ways on ground, water, or even in the air; the tether transmits the resistance of the mooring against the lift/drag of the lifting body; kites may have profiles that remind one of other aircraft of various wing sorts: rotating, fixed wing, flexible wing, kytoon, lifting blimps, etc.. )
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• units          article       units of measures          Systems of measures.   Agreements.
• unreel cycle
   
•  unstable kite elements in kite train      Notice Terry McPherson's record of 37 fighter kites in train successfully flown for a world record at the 2009 WSIKF.   Important for AWE: A major finding of his is that 4 or more unstable fighters on one line cancel enough uncertainty to fly reliably.
• unsymmetrically.     Marvin used this term in a treatise on kites.. Asymmetrically.
   
• upcycle kite   is a kite made of recyclables where the material is sent upwards from trash fate to flying fate.  Trash technology applied to kite making results in upcycle kites.
• upperwindpower  
   
• upper-wind resource  is mined by AWECS
   
• Upper Windpower™  journal, publications,     upperwindpower    
  journal for AWES:  Upper WindPower Journal
• upper winds
• UPS     uninterruptible power supplies       wiki
• up wash
• UpWind, trademark (UpWind, UpWind Kites, UpWind Power, UpWind Fund,)
• upwind kite
• upwind     windward     wiki 
• upwind design       (contrast with downwind design)
• upwind gust detection and profiling
   
• urban AWE, urbanAWE,  urban wind energy UWE, urbanWE, urbanWP, urban wind power, urbanAWECS, urban AWECS, urbanAWECS.
  Distinguish between the airborne, the terrain enabled, the structure enabled, and the ground-hugging towered devices.   M389
   
• USPTO   United States Patent & Trademark Office   holds notes and correspondence that is missed by the Google patent collection.
   
• USWindlabs        Doug Selsam
   
• UTAS     unmanned tethered aerial systems (UTAS) , in other words:  kites   (kites consists of three parts: mooring, tether, lifting body; the mooring might move in various ways on ground, water, or even in the air; the tether transmits the resistance of the mooring against the lift/drag of the lifting body; kites may have profiles that remind one of other aircraft of various wing sorts: rotating, fixed wing, flexible wing, kytoon, lifting blimps, etc..  A kite may hold multiple moorings, multiple tethers, or multiple lifting bodies.)   UTAS form a subset of UAS  or UAVs.
   
• UTES Underground Thermal Energy Storage
   
• Util       Util (NYC based green product start-up by Noah Sapir)  .
  [Lower Manhattan Fat Cat club]    Util folder in EnergyKiteSystems 
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• utility arch     M337   
• utility power device
   
• utility scale AWE   utilityScaleAWE   (provides power equivalent to meet the needs of hundreds of homes)
  Other sectors of AWE scale: utility-scale AWE, commercial-scale AWE, residential-scale AWE, nomadic-scale AWE, sport-scale AWE, toy-scale AWE, miniature-scale AWE, or micro-scale AWE
• utility pilot/lifter
• UV degradation
• UWEC Ultimate Wind Energy Converter
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