The Excalibur is an American two seats-in-

tandem Tandem, or in tandem, is an arrangement in which two or more animals, machines, or people are lined up one behind another, all facing in the same direction. ''Tandem'' can also be used more generally to refer to any group of persons or objects w ...

, high wing,

pusher configuration In aeronautical and naval engineering, pusher configuration is the term used to describe a drivetrain of air- or watercraft with propulsion device(s) after the engine(s). This is in contrast to the more conventional tractor configuration, wh ...

ultralight aircraft Ultralight aviation (called microlight aviation in some countries) is the flying of lightweight, 1- or 2-seat fixed-wing aircraft. Some countries differentiate between weight-shift control and Aircraft flight control system, conventional three-a ...

that is manufactured in kit form for amateur construction, by Excalibur Aircraft of

Sebring, Florida Sebring ( ) is a city in and the county seat of Highlands County, Florida, United States. It is nicknamed "The City on the Circle", in reference to Circle Drive, the center of the Sebring Downtown Historic District. It is the principal city of th ...

. It was introduced in 1993.Cliche, Andre: ''Ultralight Aircraft Shopper's Guide'' 8th Edition, page B-75. Cybair Limited Publishing, 2001. Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook'', page 362. BAI Communications. Downey, Julia: ''1999 Kit Aircraft Directory'', Kitplanes, Volume 15, Number 12, December 1998, page 45. Primedia Publications. ISSN 0891-1851Downey, Julia: ''2008 Kit Aircraft Directory'', Kitplanes, Volume 24, Number 12, December 2007, page 50. Primedia Publications. ISSN 0891-1851Vandermeullen, Richard: ''2011 Kit Aircraft Buyer's Guide'', Kitplanes, Volume 28, Number 12, December 2011, page 51. Belvoir Publications. ISSN 0891-1851Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 48. WDLA UK, Lancaster UK, 2011. ISSN 1368-485XTacke, Willi; Marino Boric; et al: ''World Directory of Light Aviation 2015-16'', page 107. Flying Pages Europe SARL, 2015. The Excalibur is available in the US amateur-built and

light-sport aircraft A light-sport aircraft (LSA), or light sport aircraft, is a category of small, lightweight aircraft that are simple to fly. LSAs tend to be heavier and more sophisticated than ultralight (aka "microlight") aircraft, but LSA restrictions on weigh ...

categories and in Canada in the amateur-built, BULA and

AULA Aula may refer to: *Avola, a city in Sicily (''Àula'' in Sicilian) *Aula, Eritrea, a village in western Eritrea *Aula (river) Aula is a river of Hesse, Germany. The 22.6-km Aula is a 22.6 km long tributary of the Fulda, joining it in Niederau ...

categories. In Europe it qualifies under the

Fédération Aéronautique Internationale The World Air Sports Federation (; FAI) is the world governing body for air sports, and also stewards definitions regarding human spaceflight. It was founded on 14 October 1905, and is headquartered in Lausanne, Switzerland. It maintains worl ...

microlight rules.

Design and development

The Excalibur was designed as "clone" of the

Quad City Challenger II The Quad City Challenger is a family of one and two seats-in-tandem, pusher configuration, tricycle landing gear ultralight aircraft that is designed and produced by Quad City Aircraft Corporation of Moline, Illinois. The Challenger was ...

aircraft. The company took the basic Challenger design and incorporated many changes, including mounting the engine upright allowing larger

propeller A propeller (often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working flu ...

s and the

Rotax Rotax is the brand name for a range of internal combustion engines developed and manufactured by the Austrian company BRP-Rotax GmbH & Co KG (until 2016 BRP-Powertrain GmbH & Co. KG), in turn owned by the Canadian Bombardier Recreational Prod ...

gearbox to be mounted, lengthening the tailboom and enlarging the tail vertical surface to increase stability, shortening the

aileron An aileron (French for "little wing" or "fin") is a hinged flight control surface usually forming part of the trailing edge of each wing of a fixed-wing aircraft. Ailerons are used in pairs to control the aircraft in roll (or movement aroun ...

s and replacing control cables with torque tubes. The optional

Dacron Polyethylene terephthalate (or poly(ethylene terephthalate), PET, PETE, or the obsolete PETP or PET-P), is the most common thermoplastic polymer resin of the polyester family and is used in fibres for clothing, containers for liquids and foods ...

covering on the Challenger was replaced with ''Superflite''

standard aircraft fabric Aircraft fabric covering is a term used for both the material used and the process of covering aircraft open structures. It is also used for reinforcing closed plywood structures. The de Havilland Mosquito is an example of this technique, as are ...

, the fuselage was lengthened to give more backseat room and the nosecone was reduced in size to provide better over-the-nose visibility. The design was also streamlined to reduce drag and round cross-section wing

strut A strut is a structural component commonly found in engineering, aeronautics, architecture and anatomy. Struts generally work by resisting longitudinal compression, but they may also serve in tension. A stay is sometimes used as a synonym for ...

s were replaced with aerodynamic extrusions. The Challenger's rigid landing gear was replaced with a bungee-suspended system. Regarding the landing gear improvements reviewer Andre Cliche, author of the Ultralight Aircraft Shopper's Guide, said:

Variants

;Excalibur :Basic model with

Rotax 503 The Rotax 503 is a , inline 2-cylinder, two-stroke engine, two-stroke aircraft engine, built by Rotax, BRP-Rotax GmbH & Co. KG of Austria for use in ultralight aircraft.Raisner, William: ''LEAF catalog'', pp. 6-105. Leading Edge Airfoils, 1 ...

Rotax 582 The Rotax 582 is a two-stroke cycle, two-stroke, two-cylinder, rotary intake valve, oil-in-fuel or oil injection pump, liquid-cooled, gear reduction-drive aircraft engine manufactured by Rotax, BRP-Rotax GmbH & Co. KG. It is for use in non-ce ...

, Hirth 3503,

Hirth 3203 The Hirth 3202 and 3203 are a family of in-line twin cylinder, two stroke, carburetted aircraft engines, with optional fuel injection, designed for use on ultralight aircraft, especially two seat ultralight trainers, gyrocopters and small h ...

or the Hirth 3202

two-stroke A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston, one up and one down, in one revolution of the crankshaft in contrast to a four-stroke engine which re ...

engines. 750 completed and flown by the end of 2011. ;Excalibur Four Stroke :Model with

HKS 700E The HKS 700E is a twin-cylinder, horizontally opposed, four stroke, carburetted aircraft engine, designed for use on ultralight aircraft, powered parachutes and ultralight trikes. The engine is manufactured by HKS, a Japanese company noted for ...

Jabiru 2200 The Jabiru 2200 is a lightweight naturally aspirated, pushrod four-stroke, flat four, air-cooled aircraft engine produced by Jabiru Aircraft. Design and development The conventional direct-drive engine is fitted with an alternator, silencers, ...

four-stroke A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directio ...

engines. 400 completed and flown by the end of 2011. ;Excalibur Wide Body (Stretch) :Model with wider fuselage, also called the Excalibur Stretch. 750 completed and flown by the end of 2011.

Specifications (Excalibur)

References

External links

*{{Official website, http://www.excaliburaircraft.com/ 1990s United States ultralight aircraft Light-sport aircraft Single-engined pusher aircraft High-wing aircraft Aircraft with fixed tricycle landing gear Single-engined piston aircraft

Design and development

Variants

Specifications (Excalibur)

See also

References

External links