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The Rihn DR-107 One Design is an American aerobatic homebuilt aircraft that was designed by Dan Rihn and first flown in 1993. The aircraft is supplied by Aircraft Spruce & Specialty of Corona, California in the form of plans and a materials kit for amateur construction.[1]
| DR-107 One Design | |
|---|---|
 | |
| DR-107 at Compton Abbas Airfield | |
| Role | Homebuilt aircraft |
| National origin | United States |
| Manufacturer | Aircraft Spruce & Specialty |
| Designer | Dan Rihn |
| First flight | 1993 |
| Status | Plans and kits available (2013) |
| Number built | at least 56 (2013) |
| Variants | Rihn DR-109 |
national
The DR-107 was designed as a low-cost one design aircraft for competition and sport basic to advanced aerobatics, including International Aerobatic Club Class One competitions. For this role it is stressed to +/-10g.[1]
Design and development
The DR-107 is a monoplane that features a cantilever low-wing, a single-seat enclosed cockpit under a bubble canopy, fixed conventional landing gear with wheel pants and a single engine in tractor configuration.[1]
The aircraft is predominantly made from wood, with some steel parts and doped aircraft fabric. Its 19.50 ft (5.9 m) span wing employs a Wainfan 16% symmetrical airfoil and has a wing area of 75.55 sq ft (7.019 m2). The wing has almost full-span ailerons that produce rolls of 360° per second. The wing has no flaps. Other features include a low-mounted cable-braced tailplane and a 24 in (61.0 cm) wide cockpit.[1][2]
The DR-107 can accept engines of 160 to 180 hp (119 to 134 kW). The standard engines used are the 180 hp (134 kW) Lycoming O-360, modified with high compression pistons, an inverted oil system and fuel injection or the 160 hp (119 kW) Lycoming AEIO-320 powerplant.[1]
The aircraft has an empty weight of 740 lb (340 kg) and a gross weight of 1,150 lb (520 kg), giving a useful load of 410 lb (190 kg). With full fuel of 19 U.S. gallons (72 L; 16 imp gal) the payload is 296 lb (134 kg).[1]
The designer estimates the construction time from the supplied materials kit as 2000 hours.[1]
Operational history
By 1998 the company reported that 355 kits had been sold and five aircraft were flying.[1]
In November 2013 33 examples were registered in the United States with the Federal Aviation Administration, with another 11 previously registered and now removed.[3] Also in November 2013 there were two registered with Transport Canada and ten in the United Kingdom with the Civil Aviation Authority.[4][5]
Specifications (DR-107)
Data from AeroCrafter and Lednicer[1][2]
General characteristics
- Crew: one
- Length: 17 ft 0 in (5.18 m)
- Wingspan: 19 ft 6 in (5.94 m)
- Wing area: 75.55 sq ft (7.019 m2)
- Airfoil: Wainfan 16% symmetrical
- Empty weight: 740 lb (336 kg)
- Gross weight: 1,150 lb (522 kg)
- Fuel capacity: 19 U.S. gallons (72 L; 16 imp gal)
- Powerplant: 1 × Lycoming AEIO-320 four cylinder, air-cooled, four stroke aircraft engine, 160 hp (120 kW)
- Propellers: 2-bladed constant speed propeller
Performance
- Maximum speed: 184 mph (296 km/h, 160 kn)
- Cruise speed: 160 mph (260 km/h, 140 kn)
- Stall speed: 63 mph (101 km/h, 55 kn)
- Range: 375 mi (604 km, 326 nmi)
- Service ceiling: 22,000 ft (6,700 m)
- g limits: +/-10 g
- Rate of climb: 2,000 ft/min (10 m/s)
- Wing loading: 15.22 lb/sq ft (74.3 kg/m2)
See also
References
- Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition, page 107. BAI Communications, 15 July 1998. ISBN 0-9636409-4-1
- Lednicer, David (2010). "The Incomplete Guide to Airfoil Usage". Retrieved November 29, 2013.
- Federal Aviation Administration (November 29, 2013). "Make / Model Inquiry Results". Retrieved November 29, 2013.
- Transport Canada (November 29, 2013). "Canadian Civil Aircraft Register". Archived from the original on July 18, 2011. Retrieved November 29, 2013.
- Civil Aviation Authority (United Kingdom) (November 29, 2013). "GINFO Search Results Summary". Retrieved November 29, 2013.
External links
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