Praga BH-111

This article needs additional citations for verification. Please help by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources:  –  ·  ·  · scholar · JSTOR (December 2019) (Learn how and when to remove this template message)

show This article may be expanded with text translated from the corresponding article in Czech. (March 2020) Click [show] for important translation instructions. View a machine-translated version of the Czech article. Machine translation like DeepL or Google Translate is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 968 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary Content in this edit is translated from the existing Czech Wikipedia article at [[:cs:Praga BH-111]]; see its history for attribution. You should also add the template {{Translated|cs|Praga BH-111}} to the talk page. For more guidance, see Wikipedia:Translation.

BH-111
Role	Sportsplane
Manufacturer	Praga
First flight	1932
Primary user	Czechoslovakia
Produced	1932
Number built	3

The Praga BH-111 was a sportsplane of Czechoslovakia, designed and built specifically to compete in Challenge 1932, the European touring plane championships. It was a two-seater low-wing monoplane.

Design and development[]

Praga BH-111 and Josef Kalla

The plane was designed by Pavel Beneš and Miroslav Hajn, hence BH letters, the name also referred to a successful plane Avia BH-11. Only three aircraft were built, they carried registrations OK-BAH, OK-BEH and OK-BIH.

Operational history[]

All three aircraft took part in the Challenge 1932. They took average places, the 16th (Josef Kalla) and 21st (František Klepš) for 43 aircraft. The third pilot Karel Mareš has not finished. In a technical evaluation, BH-111s scored the 4th result from 17 aircraft types taking part in the Challenge.

After the Challenge, they were used as touring aircraft in aero clubs. In 1935 they took part in a rally in Italy, taking the 5th and 27th place for 77 crews.

Praga BH-111 (1932)

Description[]

Mixed construction low-wing monoplane, wing braced with short struts and wire. Fuselage of a steel frame, covered with canvas. Rectangular wings with rounded ends, of wooden construction, canvas covered, fitted with automatic slats and flaps. Wings were folding rearwards. Cab had two seats in tandem, with twin controls, under a common multi-part canopy. Fixed landing gear with a rear skid, main gear with aerodynamic covers. Inline engine in a fuselage nose, two-blade propeller.

Specifications (BH-111)[]

Data from^{[citation needed]}

General characteristics

• Crew: 1 or 2
• Capacity: 1 / 300 kg (661 lb) payload
• Length: 7.4 m (24 ft 3 in)
• Wingspan: 10.5 m (34 ft 5 in)
• Height: 2.9 m (9 ft 6 in)
• Wing area: 15.1 m² (163 sq ft)
• Empty weight: 470 kg (1,036 lb)
• Gross weight: 770 kg (1,698 lb)
• Powerplant: 1 × de Havilland Gipsy III 4-cylinder air-cooled in-line piston engine, 89.7 kW (120.3 hp)
• Propellers: 2-bladed fixed-pitch propeller

Performance

• Maximum speed: 230 km/h (140 mph, 120 kn)
• Cruise speed: 200 km/h (120 mph, 110 kn)
• Stall speed: 75 km/h (47 mph, 40 kn) (less than)
• Service ceiling: 4,500 m (14,800 ft)
• Wing loading: 51 kg/m² (10 lb/sq ft)
• Power/mass: 0.12 kW/kg (0.073 hp/lb)

See also[]

Aircraft of comparable role, configuration, and era

• Breda Ba.33
• Heinkel He 64
• PZL.19

References[]

Further reading[]

Wikimedia Commons has media related to Praga BH-111.

• Krzyżan, Marian (1988). Międzynarodowe turnieje lotnicze 1929-1934 (in Polish). Warsaw: Wydawn, Komunikacji i Łączności. ISBN 83-206-0637-3.