Английская Википедия:Barrows Bearhawk
Шаблон:Short description Шаблон:Use mdy dates Шаблон:Use American English
The Barrows Bearhawk, now also called the Bearhawk 4-Place, is an American amateur-built aircraft, designed by Bob Barrows and produced by R&B Aircraft of Fincastle, Virginia, AviPro Aircraft and now Bearhawk Aircraft of Austin, Texas. The aircraft is supplied as a kit or as plans for amateur construction.[1][2][3][4]
Design and development
The Bearhawk was designed in the early 1990s[5] as a personal project by Barrows to carry aircraft engines for delivery as freight. It features a strut-braced high-wing, a four-seat enclosed cabin that is Шаблон:Convert wide and accessed by doors, fixed conventional landing gear and a single engine in tractor configuration.[1]
The aircraft fuselage is made from welded steel tubing covered in doped aircraft fabric, while the wings are made from aluminum sheet. Its Шаблон:Convert span wing employs a NACA 4412 mod airfoil, has an area of Шаблон:Convert and mounts flaps. The aircraft's recommended engine power range is Шаблон:Convert and standard engines used include the Шаблон:Convert Lycoming O-360 and Шаблон:Convert Lycoming O-540 four-stroke powerplants. Construction time from the supplied kit is 1200 hours.[1][4][6]
The prototype was fitted with a Шаблон:Convert Lycoming O-360 burning automotive fuel,[3] but in August 2023, the option of fitting the DeltaHawk DHK180 type certified, two-stroke Шаблон:Convert diesel engine was added.[7]
Operational history
By October 2016, 77 examples had been registered in the United States with the Federal Aviation Administration and 11 with Transport Canada.[8][9]
Variants
- Bearhawk (4-Place Bearhawk)
- Four seat model with a cabin Шаблон:Convert wide and a gross weight of Шаблон:Convert, with 75 reportedly completed and flown by December 2011. Employs a NACA 4412 airfoil.[1]
- Bearhawk Bravo
- Improved model introduced at AirVenture in July 2016. The wing has a Шаблон:Convert greater span and Шаблон:Convert greater area and employs a Riblett 30-413.5 airfoil, which gives a Шаблон:Convert higher top speed while retaining a low stall speed. The redesigned airframe also uses aluminum fuselage formers, window sills and door sills, replacing the steel formers and sills in the original model, which provides better corrosion resistance and less weight. The landing gear struts are made of heavy-wall round cross section tubing rather than streamlined tubing, which provides more resistance to sideload failure.[10]
- Patrol
- Two-seats in tandem model with a cabin Шаблон:Convert wide and a gross weight of Шаблон:Convert, with three reportedly completed and flown by December 2011.[1]
- Companion
- Two-seats in side-by-side configuration model, with a gross weight of Шаблон:Convert. First customer deliveries in October 2019.[11]
Specifications (Bearhawk)
References
External links
- ↑ 1,0 1,1 1,2 1,3 1,4 Vandermeullen, Richard: 2012 Kit Aircraft Buyer's Guide, Kitplanes, Volume 28, Number 12, December 2011, page 44. Belvoir Publications. ISSN 0891-1851
- ↑ Шаблон:Cite web
- ↑ 3,0 3,1 Purdy, Don: AeroCrafter – Homebuilt Aircraft Sourcebook, Fifth Edition, page 232. BAI Communications, 15 July 1998. Шаблон:ISBN
- ↑ 4,0 4,1 Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015–16, page 102. Flying Pages Europe SARL, 2015. Шаблон:ISSN
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
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