Zenith STOL CH 701
|CH 701 & CH 750|
|Zenair CH 701 on amphibious floats|
|Role||Sport, personal and trainer aircraft|
|Manufacturer||Zenith Aircraft Company|
|Number built||870 (CH 701, December 2011)
45 (CH 750, December 2011)
|Variants||Zenith STOL CH 801|
The Zenith STOL CH 701 and CH 750 are a family of light, two-place kit-built STOL aircraft designed by Canadian aeronautical engineer Chris Heintz through his Midland, Ontario based company, Zenair. The CH 701 first flew in 1986 and the design was still in production in 2017. The CH 750 was first introduced in 2008. The CH 701 was later developed into the four-place Zenith STOL CH 801.
The kit is produced and distributed in the USA by the Zenith Aircraft Company of Mexico, Missouri, and complete drawings, including blueprints and manuals, are also available for the design. In Europe, the CH 701 was manufactured under license by Czech Aircraft Works (CZAW) from 1992 until 2006, when the license agreement was ended.
Design and development
Designed for off-runway operations, the all-metal CH 701 has many features that contribute to the aircraft's capabilities, such as a high-lift wing with full-span, non-movable leading edge slots, an all-flying rudder, large tires, flaperons and an inverted elevator. Heintz also designed a unique tricycle gear amphibious float system for the CH 701.
Designed to the Light Aircraft Manufacturers Association of Canada (LAMAC) design standard DS 10141, in its native country of Canada the CH 701 can be built and flown as a basic ultralight, advanced ultralight or amateur-built. The CH 701 can be flown under microlight or ultralight rules in several other countries also. American pilots may fly the CH 701 under Light-sport Aircraft rules or as an experimental amateur-built. The CH 750 is designed to comply with the US Light sport aircraft rules.
By the fall of 2007, 750 CH 701s had been completed and were flying. In July 2014, representatives of the company gathered volunteers of the EAA Airventure airshow to build a CH-750 kit in a one-week timeframe.
- STOL CH 701
- Original version introduced in 1986 with a gross weight of 960 lbs and a header tank locating behind the firewall with optional 5 gal wing tanks.
- STOL CH 701SP
- Comes with two standard 10 gal wing tanks, solid aluminum spring gear. Smaller refinements to achieve a gross weight of 1100 lbs (500 kg).
- STOL CH 750
- Introduced at AirVenture 2008, the STOL CH 750 has an enlarged cabin with wider doors and is optimized for US Light Sport Aircraft rules with a maximum takeoff weight of 1320 lbs (600 kg). Builders may also opt to register it for operation on water at 1430 lbs (650 kg) while remaining within the LSA limits, or as an experimental amateur-built aircraft up to 1440 lbs (655 kg.) The STOL CH 750 was also to be factory-built by AMD as a Special Light Sport Aircraft but as of 2014 is listed by the FAA as no longer produced as an SLSA.
- CH 750 Cruzer
- Introduced at Sun 'n Fun 2013, the CH-750 Cruzer uses a new wing without the leading-edge slats of the STOL CH 750, and a newly designed tail with a separate vertical fin and rudder, rather than the all-flying rudder of the STOL version. The model is optimized for cross-country speed rather than STOL capabilities, although the specified 350 ft (107 m) ground roll of the Cruzer qualifies as STOL by most definitions. It mounts wheel pants as standard (although these may be removed and larger wheels installed) and the prototype is powered by a 130 hp (97 kW) ULPower UL350is fuel injected engine, although other engines in the 100–160 hp (75–119 kW) range can be used.
- Indian Air Force - ordered 85 aircraft, with options for a further 48 for use by the National Cadet Corps with 25 in service by February 2001.
Specifications (CH 701)
- Crew: two
- Length: 20 ft 11 in (6.38 m)
- Wingspan: 27 ft 0 in (8.23 m)
- Height: 8 ft 7 in (2.62 m)
- Wing area: 122.0 sq ft (11.33 m2)
- Aspect ratio: 5.98:1
- Empty weight: 580 lb (263 kg)
- Max takeoff weight: 1,100 lb (499 kg)
- Fuel capacity: 20 US Gal (76 L)
- Powerplant: 1 × Rotax 912 four-cylinder liquid-cooled piston engine, 80 hp (60 kW)
- Maximum speed: 85 mph (137 km/h; 74 kn) at sea level
- Cruise speed: 80 mph (129 km/h; 70 kn)
- Stall speed: 30 mph (48 km/h; 26 kn)
- Never exceed speed: 110 mph (177 km/h; 96 kn)
- Range: 372 mi (323 nmi; 599 km) with standard fuel
- Endurance: 4.6 hours
- Service ceiling: 12,000 ft (3,700 m)
- g limits: +6/-3 (ultimate)
- Rate of climb: 1,000 ft/min (5.1 m/s)
- Wing loading: 9.0 lb/sq ft (44 kg/m2)
- Vandermeullen 2011, p. 77.
- "STOL CH 701 Performance and specifications." Zenith Aircraft. Retrieved: September 4, 2017.
- Kitplanes Staff 2007, p. 80.
- "STOL CH 750 Light sport Utility." Zenith Aircraft Company, July 2008. Retrieved: September 4, 2017
- Bayerl et al. 2011, p. 128.
- "STOL CH 701 Engine." Zenith Aircraft, January 12, 2009. Retrieved: September 5, 2017.
- 'STOL CH701.' Zenith Aircraft. Retrieved: September 5, 2017.
- "Ultra-light Transition Stategy." Transport Canada, April 2007. Retrieved: September 4, 2017.
- "Listing of models eligible to be registered as advanced Ultra-Light aeroplanes (AULA)." Transport Canada, November 2007. Retrieved: September 4, 2017.
- "Aviation community unites behind one week wonder." Airventure Today, July 27, 2014, p. 4. Retrieved: September 4, 2017.
- Federal Aviation Administration, "List of Approved SLSA." FAA. Retrieved: September 4, 2017.
- Niles, Russ. "Zenair Introduces CH-750 Cruzer." AVweb, April 12, 2013. Retrieved: September 4, 2017.
- "Zenith CH 750/Cruzer Comparison." Zenth Aircrft. Retrieved: September 4, 2017.
- Tacke et al. 2015, p. 135.
- "Airscene: Aero India" 2001, pp. 254–255.
- Lambert 1993, p. 41.
- "Airscene: Aero India." Air International, Volume 60, Issue 4, April 2001. ISSN 0306-5634.
- Bayerl, Robby, Martin Berkemeier, et al. World Directory of Leisure Aviation 2011-12. Lancaster UK: WDLA UK, 2011. ISSN 1368-485X.
- Kitplanes Staff. "2008 Kit Aircraft Directory." Kitplanes, Volume 24, Number 12, December 2007. ISSN 0891-1851.
- Lambert, Mark, ed. Jane's All The World's Aircraft 1993-94. Coulsdon, UK: Jane's Data Division, 1993. ISBN 0-7106-1066-1.
- Tacke, Willi, Marino Boric, et al. "World Directory of Light Aviation 2015-16." Flying Pages Europe SARL, 2015. ISSN 1368-485X.
- Vandermeullen, Richard: "2011 Kit Aircraft Buyer's Guide." Kitplanes, Volume 28, Number 12, December 2011. ISSN 0891-1851
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