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Zenair CH701 STOL

The STOL CH 701 aircraft was developed as an "off-airport" short take-off and landing kit aircraft for both sport pilots and first-time builders. It is designed to be providing maximum short-field performance while being easy to build and maintain, making in a true sport utility kit aircraft.

With the STOL CH 701, designer Chris Heintz combined the features and advantages of a "real" airplane with the short-field capabilities of an "ultralight" aircraft. The aircraft features fixed leading-edge slats for high lift, full-span flaperons (both ailerons and flaps), an all-flying rudder, and durable all-metal construction.

Simple systems, modern materials, and design ingenuity minimize required maintenance, and make the STOL CH 701 easy to build and fly, affordable, and very durable.

The STOL CH 701 uses a special airfoil design to achieve very high lift, low stall speeds, and high strength. A thick wing, full-length leading-edge slats and trailing edge ‘junker’ type flaperons develop a maximum wing lift while maintaining a short wing-span – for maximum strength and ground maneuverability.

The aircraft designs also feature an all-flying vertical tail (rudder) section for excellent effectiveness and control, especially at low speeds. This provides responsive rudder control, while also minimizing weight and complexity (there’s only one vertical tail section). Two rudder bearings bolt to the rear fuselage to fix the rudder to the fuselage.

The Zenith Zodiac CH-701 STOL is a two-seat, single-engine, all metal shoulder-wing microlight airplane with a fixed tricycle undercarriage with steerable nosewheel or tail wheel. The "SkyJeep," with the heavy gear and tundra tires and all aluminium wings is a Ultralight Bush Plane with excellent short-field performance. With its slow flight capability the plane is an excellent observation platform. In 1985, Chris Heintz, founder and chief designer of Zenair, started the development of the Zenair STOL CH701 in a response to the need for a small but rugged airplane that could be fitted with wheels, skis and floats. The first Zenair CH701 s/n 73001, registered N701ZA, was introduced in 1986. Production deliveries started in 1987. In 1992, Heintz licensed the kit manufacturing and marketing rights to Zenith Aircraft Company for the Zodiac CH 601 and the STOL CH 701 designs. The Zenair CH-701 is nowadays manufactured in kit form by Zenith Aircraft Company, Mexico, Missouri in the USA. The STOL CH 701 kit aircraft may be built from component or complete kits, or even built from just the drawing and manuals. Building a STOL CH 701 from just the drawing and manuals lasts more time, skills, and tools, to build. Recommended power for the CH-701 is the four cylinder four stroke 80 HP Bombardier Rotax 912 UL engine, other alternative power units with a recommended power of 65 to 100 HP and up to 185 lbs. installed weight can be installed. Already over 500 CH-701 airframes are flying all around the world. The STOL CH701 design meets the definition of a Light Sport Aircraft (LSA) for operation under the Light Sport Aircraft (LSA) category.

The STOL CH701 design meets the definition of a Light Sport Aircraft (LSA) for operation under the FAA's Sport Pilot / Light Sport Aircraft (LSA) category. 2009 Price: 42000 US$

The two-seat, high wing aircraft has been fitted with the Spray Miser Ag System by Czech Aircraft Works which uses wind-driven rotary atomisers. This CH 701-AG is equipped with fixed lead-ing-edge slats, full-length flaperons, which enable it to be manoeuvred at speeds below 35 mph and typically take-off in less than 30 metres.

Featuring CNC precut and predrilled aluminum skins, the CH 701 is easy to build quickly. On three occasions, Zenith demonstrated this with kit startup, completion and first flights in seven days using volunteers at the Florida Sun ’n Fun fly-ins.

 

As of October 1998 125 kits were sold, and 95 were built from plans, the basic airframe kit selling for $12,360. Plans also offered.

 

Amphibious floats cut the speed by 3 mph. The floats are built in about 80 hrs from plans and are installed without removing the tri gear. The nose wheel folds back.

The STOL CH.701 two-seat utility cabin monoplane is certificated in Israel and Mexico.

 

Gallery

STOL CH 701
Engine: Rotax 582, 65 hp
Engine Limit: 50-100 hp, up to 185 lbs.
Wing Span: 27 ft/8.2 m
Wing Area: 122 sq.ft./11.4 m.sq.
Length: 20 ft. 11 in/6.38 m
Height: 8 ft. 7 in/2.6 m.
Empty weight: 580 lbs/263 kg
Gross weight: 1,100 lbs/500 kg.
Useful load: 520 lbs/236 kg
Wing loading: 9.0 lb/sq.ft / 43.8 sq.m
Power loading: 13.75 lb/hp / 6.25 kg/hp
Design load: +6 G / -3G
Cabin width Option: 44 in / 110 cm
Cabin width: 40 in / 100 cm.         
Fuel cap Std: 20 USG (2 x 10 USG.)
Fuel cap Opt: 2 x 38 lt
Speed max: 85 mph.     
Cruise: 75 mph.
Range: 270 sm
Range Opt: 740 km
Stall: 28 mph
ROC: 1200 fpm.
Take-off dist: 90 ft
Landing dist: 125 ft.
Service ceiling: 16,000 ft
Seats: 2.
Width (wings folded): 7 ft 4 in
Landing gear: nose.

STOL CH 701
Engine: Rotax 912, 80 hp
Top Speed: 85 mph
Cruise, Sea Level: 80 mph
VNE: 110 mph
75% Cruise @ 8,000 ft: 92 mph tas
Stall: 28-30 mph
Rate Of Climb: 1,000-1,100 fpm
Take-Off Roll: 60-115 ft
Landing Roll: 80-140 ft
Service Ceiling: 12,000-13,000+ ft
Std. Range: 372 sm    
Endurance: 4.6 Hrs.

STOL CH 701
Engine: Rotax 912S, 100 hp
Top Speed: 95 mph
Cruise, Sea Level: 85 mph
Vne: 110 mph
75% Cruise @ 8,000 ft.: 98 mph
Stall: 28-30 mph
Rate of Climb: 1,100-1,200fpm
Take-Off Roll: 50-90ft
Landing Roll: 80-140ft    
Service Ceiling: 12,000-15,000+ft
Std. Range: 350sm
Endurance:  4.1 Hrs.

Zenair SP701 STOL
Wing area: 11.4 sq.m
Length: 6.38 m
Height: 2.6 m
Gross weight (floats): 500 kg
Empty weight (floats): 354 kg
Useful load: 236 kg
Wing loading: 43.8 kg/sq.m
Design loading; +6 / -3 G
Cabin width: 1.04 m
Fuel capacity (wing tanks): 2 x 45 lt
Top speed: 159 kph
Cruise: 144 kph
Stall: 65 kph
ROC: 305 m/min
Takeoff roll: 40 m
Landing dist; 50 m
Range no res: 700-830 km
Endurance 5000 rpm: 82 kt / 16 lt/hr: 5.5 hr
Endurance 5300 rpm: 20 lt/hr: 4.4 hr

CH701 STOL
Engine: Rotax 912S, 100 hp
HP range: 50-100
Length: 20.9 ft
Wing span: 27 ft
Wing area: 122 sq.ft
Empty weight: 580 lb
Gross weight: 1100 lb
Fuel capacity: 20 USG
Cruise: 85 mph
Stall: 30 mph
Range: 460 sm
Rate of climb: 1200 fpm
Takeoff dist: 90 ft
Landing dist: 140 ft
Seats: 2
Cockpit width: 44 in
Landing gear: nosewheel
LSA: yes

CH 701-AG

CH 701 STOL Amphib
Top speed: 90 mph
Cruise: 74 mph
Stall: 32 mph
Range: 240 sm
Rate of climb: 950 fpm
Takeoff dist: 155 ft land / 300 ft water
Landing dist: 225 ft land / 250 ft water
Service ceiling: 12,000 ft
Engine: Rotax 912, 80 hp
HP range: 65-100
Fuel capacity: 11 USG
Empty weight: 575 lb
Gross weight: 1075 lb
Height: 9.5 ft
Length: 20 ft
Wing span: 27 ft
Wing area: 122 sq.ft
Seats: 2
Landing gear: retract trigear / floats