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| Long-EZ | |
|---|---|
| Name | Rutan Model 61 Long-EZ |
| Caption | Rutan Long-EZ in flight |
| Role | Homebuilt canard aircraft |
| Manufacturer | Scaled Composites / Burt Rutan |
| First flight | 1979 |
| Introduction | 1980s |
| Status | In production (plans) |
| Primary user | Amateur builders |
Long-EZ The Rutan Model 61 Long-EZ is a two-seat, canard-configured homebuilt aircraft designed for efficient long-range cruising and high fuel economy. Conceived by Burt Rutan and developed at Scaled Composites, it spawned an active community of amateur builders, experimental aviation groups, and international long-distance flyers. The design influenced aeronautical enthusiasts, airshow performers, and endurance record attempts.
Rutan developed the Long-EZ following the success of the VariEze and work at Scaled Composites, drawing on experience from projects involving the Boeing 747, Learjet, Lockheed SR-71, Northrop Grumman B-2 Spirit, and collaborators at Bechtel and NASA. The canard layout and pusher engine arrangement relate to earlier concepts tested by innovators like Vincent Burnelli, Jack Northrop, and experimental efforts at McDonnell Aircraft and Curtiss-Wright. Wind tunnel data from facilities used by The Boeing Company and NASA Ames Research Center influenced wing and canard sizing. Structural techniques reflected composites work undertaken on Voyager (aircraft), Model 76],] and research by Hughes Aircraft. Development benefited from materials suppliers who worked with General Electric, Rolls-Royce, and Fiberglass Materials, Inc..
Design choices emphasized low induced drag and laminar flow influenced by studies at Prandtl, Ludwig Prandtl Gesellschaft, and aerodynamicists associated with Glenn Curtiss-era pioneers. The Long-EZ incorporated a swept main wing, tiplets, and a forward canard to ensure safe stall characteristics, echoing experimental control arrangements seen in projects at Bell Aircraft and Convair. Early prototypes were flown at airfields frequented by test pilots formerly associated with Lockheed Martin, Northrop Corporation, and private aviators like Dick Rutan and Mike Melvill.
Long-EZ aircraft have served in private cross-country operations, record attempts, and taxied displays at gatherings hosted by Experimental Aircraft Association, Sun ’n Fun, Farnborough Airshow, EAA AirVenture Oshkosh, and regional fly-ins connected to Royal Aero Club. Builders and pilots include members of clubs with links to Aircraft Owners and Pilots Association, Civil Air Patrol, Soaring Society of America, and international aeronautical societies in United Kingdom, Australia, Canada, Germany, and France. Notable flights and attempts involved individuals who also participated in events like London to Sydney Air Race, Fédération Aéronautique Internationale record applications, and charity flights with organizations such as Red Cross and Doctors Without Borders.
Operational use extended to experimental research sorties cooperating with institutions including Massachusetts Institute of Technology, Stanford University, Caltech, and flight testing programs aligned with DARPA and independent aerodynamics investigators. Long-EZs have been featured in media produced by National Geographic, Discovery Channel, BBC, Aviation Week & Space Technology, and enthusiast publications like Kitplanes.
Several derivatives and homebuilt adaptations of the Long-EZ emerged, developed by designers inspired by Rutan and teams at Scaled Composites. Variants include custom engine installations using powerplants from Lycoming Engines, Continental Motors, Inc., and adapted automotive conversions by teams associated with Mazda, Subaru Corporation, and experimental groups in Japan. Amateur modifications mirrored innovations from projects at NASA Langley Research Center and firms like Pratt & Whitney and Rolls-Royce Holdings for auxiliary systems. Builders sometimes incorporated avionics suites sourced from Garmin, Honeywell, BendixKing, and flight instrumentation influenced by systems used in Cessna, Piper Aircraft, and Beechcraft aircraft.
Homebuilders also created stretched and shortened fuselage versions, turbocharged variants reflecting lessons from Piper PA-46 and Cessna 210 modifications, and float-equipped adaptations inspired by water operations common to de Havilland Canada designs. Community forums and technical groups formed under auspices of Experimental Aircraft Association and regional aviation clubs documented numerous bespoke variants.
Typical Long-EZ performance figures cited by builders and test pilots include cruising speeds and range metrics validated during demonstrations at Edwards Air Force Base, Mojave Air and Space Port, and regional test sites affiliated with FAA experimental certification procedures. Pilots compared Long-EZ cruise efficiency to designs from Extra Flugzeugbau, Monnett Moni, and Glasair Aviation. Fuel burn, payload, and range were often benchmarked against standards set by Fédération Aéronautique Internationale records and cross-country events such as Powder Puff Derby and long-distance rallies hosted by Women Airforce Service Pilots alumni groups.
Specifications vary by builder, engine, and propeller configuration; many Long-EZs achieve high lift-to-drag ratios comparable to touring aircraft from Diamond Aircraft Industries and certain light jet conversions by Eclipse Aviation teams. Performance tuning drew on propeller technologies from Hartzell Propeller, Sensenich, and avionics optimization informed by research at MIT Lincoln Laboratory.
Construction relied heavily on composite techniques pioneered at Scaled Composites and commercialized by suppliers used by Bombardier Aerospace, Gulfstream Aerospace, and experimental programs at Northrop Grumman. Builders employed foam cores, fiberglass, and epoxy systems similar to those used in projects by Virgin Galactic and small-pressurized aircraft developed by Sikorsky Aircraft. Fuselage molds, layup procedures, and vacuum-bagging practices echo methods standardized in workshops associated with Composite Institute programs and vocational training at institutions like Embry-Riddle Aeronautical University.
Plans distribution, tooling, and kit components circulated through networks linked to Experimental Aircraft Association chapters, independent suppliers, and manufacturers that also served Cirrus Aircraft and Lancair builders. Safety-critical components and fasteners referenced standards common to parts catalogs used by Lycoming, Continental Motors, Inc., and general aviation overhaul shops servicing Textron Aviation fleets.
The Long-EZ community has studied accident reports, many handled under oversight by Federal Aviation Administration and maritime-adjacent investigations when flights occurred near coasts administered by United States Coast Guard. Accident analyses referenced investigative bodies such as National Transportation Safety Board and international counterparts like Transport Canada Civil Aviation and Air Accidents Investigation Branch in the United Kingdom. Common causal factors identified in reports paralleled themes seen across experimental aviation incidents reviewed by Flight Safety Foundation and training institutions like Air Line Pilots Association and Civil Air Patrol safety programs. Builder forums and safety seminars at EAA AirVenture Oshkosh and Sun ’n Fun have promoted best practices also advocated by AOPA Air Safety Institute.
Proactive modifications and safety retrofits implemented by owners drew on technologies from Garmin ADS-B installations, ballistic parachute systems similar to those promoted by companies that worked with Cirrus Aircraft, and improved restraint systems meeting standards used in Bell Helicopter and fixed-wing general aviation retrofit programs.