Long-EZ | |
---|---|
Long-EZ built by Timothy Crawford and operated by NOAA [1] | |
Role | Homebuilt aircraft |
National origin | United States of America |
Manufacturer | Rutan Aircraft Factory TERF Inc, (plans suppliers) |
Designer | Burt Rutan |
First flight | June 12, 1979 [2] |
The Rutan Model 61 Long-EZ is a tandem 2-seater homebuilt aircraft designed by Burt Rutan's Rutan Aircraft Factory. The Long-EZ has a canard layout, a swept wing with wingtip rudders, and a pusher engine and propeller. The tricycle landing gear has fixed main wheels with streamlined spats and a retractable nosewheel. Its predecessor was the VariEze, plans for which were first available to homebuilders in 1976. The prototype Long-EZ, N79RA, [3] first flew on June 12, 1979.
The Long-EZ was a scaled-up redesign of the VariEze predecessor, allowing for the use of readily available Lycoming aircraft engines instead of the Volkswagen-derived engines or hard-to-find small Continentals for which the VariEze was designed. Changes from the VariEze included a larger main wing with modified Eppler 1230 airfoil and less sweep, larger strakes containing more fuel and baggage storage, and a slightly wider cabin. The canard uses the same GU25-5(11)8 airfoil as the VariEze. Plans were offered from 1980 to 1985. There were about 700 FAA-registered Long-EZs in the United States in 2005, which had grown to 833 in 2021.
In January 1985 it was announced that plans for a new canard were being offered, to eliminate "rain trim change" that had been experienced by Long-EZ pilots. [4] This trim change is usually a nose-down trim change experienced when flying into rain requiring a small aft force on the stick to maintain altitude, which is easily trimmed out, using the bungee trim system. The new canard was designed with the Roncz R1145MS airfoil, which produces considerably more lift than the original GU25-5(11)8 airfoil. This enabled the new canard to be designed with less span, reducing wetted area and thus drag. The new canard has a negligible rain trim, and rain adds only 2 knots to the stall speed.
The aircraft is designed for fuel-efficient long-range flight, with a range of just over 2,000 miles (3,200 km). [5] It can fly for over ten hours and up to 1,600 miles (2,600 km) on 52 gallons (200 liters) of fuel. [6] Equipped with a rear-seat fuel tank, a Long-EZ flew for 4,800 miles (7,700 kilometers) in December 1979, still the record for aircraft weighing less than 1000 kg. [7]
The pilot sits in a semi-reclined seat and controls the Long-EZ with a side-stick controller on the right-hand console. It has an airbrake on the underside, and the wing-tip rudders can be deflected outwards to act as auxiliary airbrakes. [6]
In 1996 Burt Rutan awarded TERF Inc. the job of publishing the plans for the Long-EZ and other of his aircraft under The Rutan Aircraft Factory CD ROM Encyclopedia to further assist new builders and maintenance for existing builders. [8] [9] Some components for the design are supplied by Aircraft Spruce & Specialty. [10]
In 1997 Dick Rutan and Mike Melvill flew in convoy around the world in two Rutan Long-EZ aircraft that they had built. This "around the world in 80 nights" flight was called The Spirit of EAA Friendship World Tour, and some legs of it lasted for over 14 hours. [11]
Data from Jane's All The World's Aircraft 1982–83 [2]
General characteristics
Performance
By February 2023, 114 Long-Ez aircraft have been lost in accidents, with 44 fatalities. [22]
Related development
Aircraft of comparable role, configuration, and era
Scaled Composites is an American aerospace company founded by Burt Rutan and currently owned by Northrop Grumman. It is located at the Mojave Air and Space Port in Mojave, California, United States. Founded to develop experimental aircraft, the company now focuses on designing and developing concept craft and prototype fabrication processes for aircraft and other vehicles. It is known for unconventional designs, for its use of non-metal, composite materials, and for winning the Ansari X Prize with its experimental spacecraft SpaceShipOne.
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Elbert Leander "Burt" Rutan is a retired American aerospace engineer and entrepreneur noted for his originality in designing light, strong, unusual-looking, and energy-efficient air and space craft. He designed the record-breaking Voyager, which in 1986 was the first plane to fly around the world without stopping or refueling. He also designed the Virgin Atlantic GlobalFlyer, which in 2006 set the world record for the fastest and longest nonstop non-refueled circumnavigation flight in history. In 2004, Rutan's sub-orbital spaceplane design SpaceShipOne became the first privately funded spacecraft to enter the realm of space, winning the Ansari X-Prize that year for achieving the feat twice within a two-week period.
Richard Glenn Rutan was an American military aviator and officer. He was also a record-breaking test pilot who in 1986 piloted the Voyager aircraft on the first non-stop, non-refueled around-the-world flight with co-pilot Jeana Yeager. Rutan was born and raised in Loma Linda, California, where he gained an interest in flying at a young age. He was the older brother of famed aerospace designer Burt Rutan, whose many earlier original designs Dick piloted on class record-breaking flights, including Voyager.
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