RUTAN
Model 61 'Long-EZ'
Type: prototype and homebuild canard aircraft
Powerplant: 1 x 108 hp Lycoming O-235
First flight: June 1979
The Model 61 Long-EZ was a larger version of the original
Rutan designed VariEze canard pusher.
The engine was at the rear pushing, and the pitch control (or elevator),
called the canard, is on the front
wing. The aircraft was plan-built using the Rutan composite method. This
consisted in carving the shape of the aircraft parts in foam and then
fibreglass
on the outside. Many parts are still available for the design. The standard
design had a retracting nosewheel and fixed main gear. At rest, the nosewheel
was retracted and the nose was lowered to the ground. This prevented tipping
due to the rear centre of gravity. The Long-EZ
was a very well tested, fast and economical aircraft, and a dream to fly
once you
got
used
to
it.
Its biggest asset wass probably its remarkable flying characteristics and
inability to stall; its main drawback was the limited baggage space it offers.
With its greater wing area, range and payload, more powerful
engine and larger interior,
it represented Rutan’s next
generation canard design.
Some early problems were experienced with the Long-EZ design when the canard
could stall when wet. This problem was cured by fitting vortex generators. The
Long-EZ has undoubtedly been Rutan's biggest hit with homebuilders, being
the design he sold plans for in the biggest numbers and the one that has
spawned the most versions. Rutan himself stopped his involvement in the
Long-EZ and his other homebuild designs in the mid-1980s when he closed down
Rutan Aircraft Factory afte deciding to no longer sell the plans for fear
of law suits. This has not prevented the Long-EZ to be very popular, and
even Rutan continued providing informal support for a while.
Two Long-EZs
(including Dick Rutan's custom-built Long-EZ-B)
were even flown around the world by Dick Rutan and Mike Melvill for the Spirit
of EAA Friendship World Tour. The Long-EZs has spawned
many individual variants
and
several very
popular
kitplane
versions
such as the Cozy, Velocity, Berkut or E-Racer series.
None of these homebuilds is ever quite the same as the others, and some
may feature different engines, different horsepower, enlarged cabins
for more payload
or
passengers,
two
or three
bladed propellers,
side-tilting
or
upward-tilting
cockpits, fixed or retractable gear. There has even been a twin pusher
version called the Twin-EZ (also
known as the 'Mini-Starship') and a ducted fan version called the Duckt.
The Long-EZ has also been evolved into
several military UAV (unmanned) and OPV (optionally piloted) versions such
as the Aeromet AURA, the
California Microwave CM-30, CM-44 and CM-46,
the Army VZ-10,
the Aeronautics Defense Systems A-701 Dominator,
the Army VZ-11 Velocity,
and now the Proxy SkyWatcher and SkyRaider.
The Long-EZ's general layout has been reused in the Model
115 Beechcraft Starship demonstrator. Even jet-powered versions such
as the Task Vantage,
Greg Richter's Cozyjet, V-Jet
900, XCOR's EZ-Rocket and
AFFTC/ISSI's Borealis have
been or are being successfully flight-tested, and with the upcoming Rocket
Racing League, which will be run by Long-EZ and Velocity jet
derivatives, the renewed interest for the Long-EZ design will no doubt
enable Rutan's
superior
design to fly well into the 21st century.
Population: 1 prototype [N79RA]
production total
unknown (in the hundreds)
Specifications:
Wingspan: 26.1 ft
Wing area: 94.8 sq. ft.
Seats
Empty weight: 800 lb.
Gross weight: 1425 lb.
Fuel capacity: 52 gal.
Range: 1150 miles
Performance:
Rate of climb
Max speed: 193 mph
Cruise speed: 186 mph
Takeoff distance, ground roll: 950 ft.
Landing distance, ground roll: 680 ft.
Service ceiling: 22000 ft.
Specs and performance (as given in The Canard
Pusher in 1980):
Span: 26.3ft
Area: 94.1 sq. ft.
Empty weight (basic): 710 lb.
Empty weight (equipped): 750 lb.
Solo weight: 960 lb.
Gross weight: 1325 lb.
Max fuel: 52 gal.
Cabin L/W/H: 100/23/37 in.
Takeoff (solo/gross): 550/830 ft.
Climb (solo/gross): 1750/1350 fpm
Cruise (75% 8000 ft.) 183 mph
Cruise (40% 12000 ft.): 144 mph
Max range * 75% (solo/2 place): 1370/965 mi
Max range * 40% (solo/2 place): 2010/1430 mi
Ceiling (solo/gross): 27000/22000 ft
Landing dist. (solo/gross): 450/680 ft.
*40-minute reserve
Crew/passengers: 2
Main sources:
- The Canard Pusher
- Pilot
Friend
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