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Topic: Vertical takeoff and landing

	Airplane - Printer-friendly - MSN Encarta
		Land planes, carrier-based airplanes, seaplanes, amphibians, vertical takeoff and landing (VTOL), short takeoff and landing (STOL), and space shuttles all take advantage of the same basic technology, but their capabilities and uses make them seem only distantly related.
		Landing gear may be fixed, as in some general-aviation airplanes, or retractable, usually into the fuselage or wings, as in more-sophisticated airplanes in general and commercial aviation.
		Vertical Takeoff and Landing (VTOL) airplanes typically use the jet thrust from their engines, pointed down at the Earth, to take off and land straight up and down.
	encarta.msn.com /text_761556643___34/Airplane.html (726 words)

	Vertical/short takeoff or landing aircraft having a rotatable wing and tandem supporting surfaces - Patent 5098034
		When short takeoffs and landings are required the wing is partially rotated and during conventional flight, the wing is rotated to a position that is approximately parallel to the longitudinal axis of the aircraft (12).
		The invention pertains to the general field of vertical/short takeoff or landing aircraft and more particularly to such an aircraft that produces a locally generated and controlled airstream that is directed upon a wing which has a controlled angle of incidence in relation to the airstream.
		The jets produce lateral stability and control of the airplane during vertical takeoff and landing motions and aid in lateral stability of the aircraft in conventional flight and through the transition from vertical movements to conventional flight.
	www.freepatentsonline.com /5098034.html (3839 words)

	vertical takeoff and landing aircraft - HighBeam Encyclopedia
		This type was abandoned, partly because of the difficulty in maintaining fine control when its fuselage was positioned vertically, e.g., during a landing.
		Some convertiplanes are conventional-looking aircraft that can tilt their rotors, or oversize propellors, so that the rotors' axes are vertical during takeoff and landing and are horizontal during forward flight.
		The Harrier is a jet fighter convertiplane that uses vanes to direct the thrust of its engine upward or forward and is capable of flight at approximately the speed of sound; it proved its ability to control a battlefield despite the absence of airports and runways during the 1982 Falklands conflict.
	www.encyclopedia.com /doc/1E1-verttak.html (456 words)

	Horizontal vs. vertical landing (Henry Spencer; Mitchell Burnside Clapp)
		When landing an aircraft with the power off, the pilot must keep the airspeed high until he or she is ready to bring the flight path level with the ground and land.
		Vertical landers have thrust to overcome the downdraft, but if the microburst strikes at the wrong moment a hard landing is also a possibility.
		And the Yak-36 normally does (did?) both takeoffs and landings vertically, and in fact for a while Western observers thought that it was incapable of rolling takeoffs and landings (although I believe this turned out to be incorrect).
	yarchive.net /space/launchers/horizontal_vs_vertical_landing.html (5217 words)

	Vertical and Short Takeoff and Landing Aircraft V/STOL
		Shortly after the airplane was invented, its disadvantage of requirement of a significant runway for takeoff and landing was quickly noticed, which significantly limit the airplane's utility.
		Their advantage in vertical lift capability is offset by their poor flight stability characteristics, and very high initial and maintenance costs.
		In the field of vertical and short take-off and landing aircraft gas turbines are often adapted to provide thrust for both normal wing-borne flight and for lift.
	www.globalsecurity.org /military/systems/aircraft/vstol.htm (2412 words)

	Tilt wing short takeoff aircraft and method - Patent 4482108
		A short takeoff and landing aircraft (10) and vertical/short takeoff and landing aircraft (10), having upper surface blowing engines (12, 14) on gull-shaped wings (24, 26) which may be tilted and translated by a variable incidence translation device (52).
		The invention relates to a short takeoff and landing (STOL) or vertical short takeoff and landing (V/STOL) aircraft in which the engines are positioned upwardly on the wings to permit upper surface blowing, that is, jet exhaust over the wings.
		5, the flaps 46 and 48 are deflected for takeoff and landing.
	www.freepatentsonline.com /4482108.html (2793 words)

	Highbeam Encyclopedia - Search Results for takeoff
		The carrier's distinctive features are a flat upper deck (flight deck) that functions as a takeoff and landing field, and a main deck (hangar deck) beneath the flight deck for storing and servicing the aircraft.
		During World War II, it was the takeoff point for Soviet-bound lend-lease materiel; after the war it was a training base for crews in the Berlin Airlift.
		Turnbacks reconsidered: if an engine quits on takeoff, where you go is less important than how you arrive.
	www.encyclopedia.com /searchpool.asp?target=takeoff (530 words)

	XV-15 index: XV-15 Tilt Rotor Aircraft Photo Gallery Contact Sheet
		For takeoff, the proprotors and their engines are used in the straight-up position where the thrust is directed downward.
		To land, the proprotors are rotated up to the helicopter rotor position and flown as a helicopter to a vertical landing.
		Takeoff and landing terminals can be small, making tiltrotor aircraft ideal for intercity commuter travel.
	www.dfrc.nasa.gov /gallery/photo/XV-15/HTML/index.html (613 words)

	VTOL - Wikipedia, the free encyclopedia
		An early VTOL prototype was Rolls-Royce's "flying bedstead", this led to the first British VTOL aircraft, the Short SC.1 which used a mixture of vertical lift engines and a horizontal one for forward thrust.
		The idea of using the same engine for vertical and horizontal flight by altering the path of the thrust led to the Bristol Siddeley Pegasus engine which used rotating ducts to direct thrust over a range of angles.
		One of the test-aircraft is preserved in the Deutsches Museum in Munich / Germany
	en.wikipedia.org /wiki/VTOL (702 words)

	Bell/Boeing V-22 Osprey
		The V-22 Osprey is a medium lift, multi-mission, vertical/short takeoff and landing (V/STOL), tilt-rotor aircraft developed by Bell Helicopter Textron and Boeing to fill joint service combat operational requirements for the year 2001 and beyond.
		It was capable of taking off and landing vertically like a helicopter and of flying horizontally when its "proprotors" were rotated forward and downward.
		It can takeoff and land like a helicopter, but, once airborne, its blades can be rotated to convert the aircraft to a turboprop airplane capable of high-speed, high-altitude flight.
	www.theaviationzone.com /factsheets/v22.asp (1333 words)

	SINGLE STAGE TO ORBIT VERTICAL TAKEOFF AND LANDING CONCEPT TECHNOLOGY CHALLENGES (Site not responding. Last check: 2007-10-09)
		General Dynamics has developed a vertical takeoff and landing (VTOL) concept for a single stage to orbit (SSTO) under contract to the Strategic Defense Initiative Organization (SDIO).
		Vertical launch and ascent are similar to today's launch vehicles, except that inland bases such as White Sands are envisioned.
		After landing, the vehicle is safed and towed to the Turnaround Hangar, where maintenance, servicing, and the payload installation occurs.
	www.abo.fi /~mlindroo/gd_ssto/iaf91205.htm (2738 words)

	VTOL Summary
		Commonly referred to as Vertical/Short Takeoff and Landing (V/STOL) aircraft, V/STOL planes arose from aviators' desire to combine the takeoff and landing abilities of helicopters with the fast, long-range flight abilities of airplanes.
		The relaxation of the takeoff requirements results in a greatly increased payload, while still not requiring a full runway or full-size aircraft carrier for safe operations.
		Investigations are proceeding that may combine these concepts, employing a tiltrotor that is used for hovering takeoff and landings, and which then literally stops and turns into a wing for fixed-wing flight.
	www.bookrags.com /VTOL (1046 words)

	vertical takeoff and landing aircraft — FactMonster.com
		VTOL aircraft - VTOL aircraft: see vertical takeoff and landing aircraft.
		short takeoff and landing aircraft - short takeoff and landing aircraft (STOL), heavier-than-air craft, capable of rising from and...
		tilt-rotor aircraft - tilt-rotor aircraft: see vertical takeoff and landing aircraft.
	www.factmonster.com /ce6/sci/A0850742.html (304 words)

	Navy Awards Vertical Takeoff UAV Contract
		Intended for ASW (Anti-Submarine Warfare) missions, the DASH was piloted remotely during takeoff and landing by an officer located near the flight deck, then flown via radar to its target by a second officer in the Combat Information Center (CIC), who would fly the aircraft via radar to the location of an enemy submarine.
		Several schemes are being considered to capture the UAV upon landing, including spring loaded clamps on the landing gear that would grip a grid in the ship’s deck, or an inflatable airbag covered with Velcro which would be flown at a special mat, where it would stick until the crew could properly secure it.
		Maximum gross takeoff weight is almost 300 lb higher than the 330SP at 2,550 lb, with an empty weight of 1,457 lb and a mission fuel load of 793 lb.
	www.vtol.org /uavpaper/NavyUAV.htm (5641 words)

	Commercial Applications of the Gyrodyne (Site not responding. Last check: 2007-10-09)
		The FAA describes a "gyrodyne" as a "rotor wing" aircraft that powers its rotor for takeoff and landing, but en route, flies in autorotation, like a gyroplane, without power to the rotor.
		The Fairey Rotodyne was a 44 passenger "gyrodyne" which used rotorblade tip jets to power its rotor for vertical takeoff and landing and gave it the ability to hover.
		Following take off and acceleration to forward flight, the tip jets were shut down and the aircraft flew in "autorotation" as a propeller driven gyroplane for the remainder of the flight.
	www.groenbros.com /commercial.php (721 words)

	VTOVL
		The concept of a reusable single-stage-to-orbit Vertical Take-Off Vertical Landing (VTOVL) launch vehicle that would reenter and return to its launch site for turnaround and relaunch was first proposed by Philip Bono in the 1960's.
		In 1977 Boeing produced a vehicle design for a 227 tonne payload vertical takeoff launch vehicle to be used to launch components for the huge Satellite Solar Power...
		Aerospatiale vertical takeoff, vertical landing single stage to orbit study....
	www.astronautix.com /lvfam/vtovl.htm (996 words)

	Boeing: Boeing JSF X-32B Completes First Vertical Landings
		With the two landings, accomplished on the X-32B's 49th and 51st flights, Boeing completed the government vertical landing requirement for the JSF program.
		The aircraft was then refueled and following another conventional takeoff, transitioned to a hover and landed vertically on the hover pad.
		Frank Statkus, Boeing vice president and JSF general manager, said the vertical landings are the biggest step toward the successful completion of all of the customer's STOVL requirements.
	www.boeing.com /news/releases/2001/q2/news_release_010627n.htm (715 words)

	Flight or fancy? Vertical takeoff and landing craft's upward mobility Omni - Find Articles (Site not responding. Last check: 2007-10-09)
		It is the vertical takeoff and landing aircraft - something between a helicopter and a fixed-wing airplane.
		Enter the V-22 Osprey, a modest vertical takeoff and landing tiltrotor craft.
		Tilt-rotors will land somewhere between helicopters and fixed-wing turbo-props in cost effectiveness, which means they'll probably be used only by people willing to fork over regular coach- or business-class rates.
	www.findarticles.com /p/articles/mi_m1430/is_n1_v15/ai_12694925 (696 words)

	XV-15 Tiltrotor Research Aircraft, 20th Anniversary (Site not responding. Last check: 2007-10-09)
		For takeoff, the proprotors and their engines are rotated to the straight-up position where the lift developed is entirely propulsive.
		They have the vertical takeoff and landing ability of the helicopter and the cruise speed, range, and fuel economy of fixed-wing aircraft.
		Tiltrotors achieve this by the use of rotors that operate like helicopter rotors during takeoff and landing, then tilt to horizontal thrust to act like turboprop propellers during cruise.
	www.simlabs.arc.nasa.gov /library/tiltrotor/ctr20th.html (1316 words)

	AllRefer.com - vertical takeoff and landing aircraft (Aviation, General) - Encyclopedia
		AllRefer.com - vertical takeoff and landing aircraft (Aviation, General) - Encyclopedia
		You are here : AllRefer.com > Reference > Encyclopedia > Aviation, General > vertical takeoff and landing aircraft
		More articles from AllRefer Reference on vertical takeoff and landing aircraft
	reference.allrefer.com /encyclopedia/V/verttak.html (349 words)

	A Review of Vertical Takeoff and Landing Technology in the National Airspace System (Site not responding. Last check: 2007-10-09)
		While VTOL aircraft are capable of landing at airports without relying on runways, a common complaint voiced by VTOL proponents is that FAA tends to treat them the same as conventional airplanes at large hub airports, requiring helicopters to queue up with fixed-wing aircraft on approaches to—or departures from—busy runways.
		Is that because you are doing vertical takeoff and landing—I guess my real question is if you designed a conventional aircraft with wings like this, that had a shape like this, that could go this fast, it would be unstable at conventional takeoff and landing speeds.
		With that said, vertical takeoff and vertical landing, I think, is still a major option, and perhaps we have got some alternatives here in front of us today that we should take a look at.
	commdocs.house.gov /committees/science/hsy73333.000/hsy73333_0.htm (17398 words)

	V-2 VTOHL
		The V-2 vertical takeoff / horizontal landing two-stage reusable space shuttle was proposed by Beijing Department 11 of the Air Ministry in 1988.
		V-2 vertical takeoff/horizontal landing two-stage reusable space shuttle, proposed by Beijing Department 11 of the Air Ministry.
		However in parallel development of technology for a two-stage-two-orbit horizontal takeoff and landing reusable space shuttle would be pursued, with a first flight date of 2015.
	www.astronautix.com /craft/v2vtohl.htm (1197 words)

	FSC-1 History
		Vertical take-off and landing is a distinct flight characteristic and it is very useful in certain situations.
		And while it has been the dream of most pilots to takeoff vertically and fly away, the fact is there are very few places you have permission to land with 200+ mph winds being stirred up.
		On the flip side, 1.8% of the final destinations were only available to vertical takeoff and landing vehicles.
	www.labicheaerospace.com /history.html (649 words)

	Ryan X-13 Vertijet Experimental Vertical Takeoff & Landing (VTOL)
		The X-13 was designed to test the idea of vertical takeoff, transition to horizontal flight, and return to vertical flight for landing by jet aircraft.
		It took off vertically from its mobile trailer, rose into the air, nosed over into a level attitude, and flew for several minutes.
		It took off and landed from a truck trailer that flipped vertically The trailer is in the museum too.
	www.fiddlersgreen.net /AC/aircraft/Ryan-Vertijet/vertijet.htm (531 words)

	Vertical takeoff and landing aircraft, Harrier jet - Military Planes
		A Harrier jet lands on the deck of a British aircraft carrier.
		The Harrier was the first airplane that could take off and land vertically.
		A centrally positioned turbine engine is swiveled downward to produce direct lift, then gradually turned back to the horizontal position to propel the airplane forward.
	www.auuuu.com /airtravel/25.html (322 words)

	Star Wars: Blogs \| Money (used) to make the world(s) go round \| Vertical takeoff and landing aircraft
		Vertical takeoff and landing aircraft (VTOL) are craft that are capable of rising and descending vertically from and to the ground, and thus requiring no runway.
		Convertiplanes are VTOL craft that can fly horizontally with the same effectiveness as a conventional aircraft.
		The point (I hear you ask yourself, yawning) is that I saw Luke ditch his X-Wing Fighter into the marshy depths of exiled Jedi Mater Yoda's secret encampment area on Dagobah.
	blogs.starwars.com /sid/16 (323 words)

	X-13 Vertical Takeoff and Landing
		The concept behind the X-13 was vertical take-off and landing.
		It eventually was able to take-off vertically, switch to a horizontal flight, then transition back for a vertical landing.
		While the concept was very exciting to some in the armed forces, it never went so far as being a prototype fighter.
	www.gl.iit.edu /wadc/features/aircraft/x-13 (147 words)

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