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A helicopter is an aircraft which is lifted and propelled by one or more horizontal rotors. Helicopters are classified as rotary-wing aircraft to distinguish them from conventional fixed-wing aircraft. The word helicopter is derived from the Greek words helix (spiral) and pteron (wing). The first single-rotor, fully-controllable helicopter to enter large full-scale production was made by Igor Sikorsky in 1942.
Compared to conventional fixed-wing aircraft, helicopters are much more complex, more expensive to buy and operate, and are more limited in speed, range, and payload. The compensating advantage is maneuverability: helicopters can hover in place, reverse, and above all take off and land vertically. Subject only to refueling facilities and load/altitude limitations, a helicopter can travel to any location, and land anywhere with enough space (approximately twice the area of the rotor disk).
Compared to other vertical lift aircraft like tiltrotors (V-22 Osprey for example) and vectored thrust airplanes (AV-8 Harrier for example), helicopters are very efficient, carrying more than twice the payload, consuming less fuel in hover and costing considerably less to buy and operate. However these other configurations have a much higher cruise speed than a helicopter (270 km/h for a helicopter, 460 km/h for a tiltrotor, 900+ km/h for a vectored thrust airplane).
More on [ Helicopter ]
Engines :: Remote Control
Helicopters :: Radio Controlled
Jack from 29 palms said.., "black ops helicopters are dripping with cows - I think that's code for something, but, I'm not sure what."
theGreenAlien (Fred the Green Alien) Sat, 12 Dec 2009 20:32:58 -0000
Jack from 29 palms said.., "black ops helicopters are dripping with cows - I think that's code for something, but, I'm not sure what."
Flying Radio Controlled Helicopters is a Joyful Hobby | E-Book Store: Flying a radio controlled helicopter is sheer... http://bit.ly/4RgFZa
customrclights (brad c) Sat, 12 Dec 2009 20:14:37 -0000
Flying Radio Controlled Helicopters is a Joyful Hobby | E-Book Store: Flying a radio controlled helicopter is sheer... http://bit.ly/4RgFZa
@Hughsmuse the whole unmarked black helicopters and contrail ideas?
borexjohnson (Josh Taylor) Sat, 12 Dec 2009 20:02:41 -0000
@Hughsmuse the whole unmarked black helicopters and contrail ideas?
Let us pray....Dear Lord, please make the bad helicopters go away.... Babies are sleeping.....Amen
Claire191 (Claire West) Sat, 12 Dec 2009 19:47:17 -0000
Let us pray....Dear Lord, please make the bad helicopters go away.... Babies are sleeping.....Amen
Two military Apache attack helicopters flying overhead.
kostuch (John Kostuch) Sat, 12 Dec 2009 19:34:43 -0000
Two military Apache attack helicopters flying overhead.
There is kak in J'bay!!!! Loads of helicopters flying around this time of night.....
Claire191 (Claire West) Sat, 12 Dec 2009 19:28:01 -0000
There is kak in J'bay!!!! Loads of helicopters flying around this time of night.....
AirStar International - Design and produce radio controlled helicopters, accessories and parts. USA.
Aurorra Ltd - Northern UK distributor for Wildcat model helicopter fuel, Model Avionics, Quick UK, and Kokam USA.
Meta Description: [ Kokam, Lithium Polymer Cells ,FMA Direct,Lithium Polymer Charger,Lipo Charger,Brushless Motors , Safeguard,ESC,Motor Speed Controller,Medusa Research,Medusa, Castle Creations,castle speed controllers,West mountain radio ]
Bergen R/C Helicopters - Manufactures the Intrepid helicopter line. Company data, product line, upgrades, parts list, tips and tricks, online chat, and contacts.
Meta Description: [ Bergen R/C Helicopters. Committed to producing the world's BEST R/C Helicopter on the market. Home of the Intrepid line of R/C helicopters, also the Observer camera ship, and the Bergen Industrial Twin Cylinder Helicopter. ]
Bolar Heli Research - Builds custom R/C helicopters, including aerial photography, video, and sensor carrying models. What's new, products, services, FAQs, and contacts.
Meta Description: [ Bolar builds pod and boom, scale, and custom R/C helicopters for the hobbyist and remote controlled RPV rotorcraft for aerial video, sensor carrying, photography and ]
Century Helicopter Products - Product line, specifications, pictures, contacts, dealers, and manuals.
CSM Design Consultancy Ltd - Best known for the CSM simulator and CSM heading hold gyros.
Jappa USA - Manufacture of 3DX-400 RC helicopters. Distributor for T-REX 400, Honey Bee 2.
Meta Description: [ Original manufacture with headquarter in the United States. Accept no imitations. ]
Kyosho Helicopters - Manufactures the Concept, Nexus, and Caliber RC helicopter kits.
Leisure-Tech Products - Canadian importer/distributor for TSK, K and S, ARK, Niftec, Century, Arcamax, GWS, and Jaccio RC helicopter produsts.
Meta Description: [ We%20are%20a%20canadian%20company%20specialising%20in%20r/c%20model%20helicopter%20products.%20We%20are%20the%20exclusive%20canadian%20importer%2C%20distributor%20for%20Century%20helicopter%20products. ]
Lite Machines - Manufacturer of the LMH line of 1/2A powered RC helicopters. Product data, FAQs, dealer list, downloads, and photos.
Miniature Aircraft USA - Manufacturer of the X-Cell and Fury line of model helicopters.
Meta Description: [ Welcome to the home page of Miniature Aicraft USA, the manufacturer of the X-Cell line of R/C helicopters. ]
Model Aviation Ltd - Distributer of the MS Hornet micro-helicopter and related parts.
Model Helicopter Headloaders - A device for setting up and checking out model helicopters. Product information, pictures, and contacts.
MRC/Altech - Importer and distributor of Hirobo products in the United States.
Meta Description: [ Large selection of hobby products including RC planes, radio control cars, trucks, boats, helicopters, flight simulators, 1/32 slot cars, battery chargers, model engines, model trains, sound systems, train controls and plastic model kits from Model Rectifier Corporation (MRC). ]
500
Precision Helicopters International - Information about Hurricane and Tornado RC helicopter kits, parts, accessories, support, contacts, and related links.
Meta Description: [ PHI produces high quality 60-size 3D model helicopters
at the lowest prices on the market. Our standard use of machined parts and composite
materials is unparalleled. ]
500
RC X-cell Helicopters Australia - Supplies a range of parts and accessories. News, profile, events, pictures, and links.
Meta Description: [ Radio Controlled Model Helicopters - R/C X-Cell Helicopters Australia PTY.LTD. ]
RotorGraphics - Custom vinyl graphics for all major makes of RC model helicopters and other graphic accessories. Product line, pictures, and application tips.
Meta Description: [ RotorGraphics: Custom Vinyl Model Helicopter Graphics ]
Silas Kwok Helicopters - US importer for TSK Helicopter of Japan. Fiberglass fuselages, helicopter kits, parts, accessories, pictures, links, about us, and contact information.
Snelflight HoverFly - Information about this model electric powered helicopter. Technical data and stockists list.
Meta Description: [ Hoverfly is the ultimate indoor electric micro helicopter trainer. Virtually unbreakable, unlimited flight time, at the lowest cost. ]
VBlades - Manufactures custom RC helicopter blades. Includes specifications, FAQ, and list of sponsored pilots.
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