Ensiklopedia Dunia

Technopedia Center

Faculty of Engineering and Computer Science
S1 Informatics S1 Information Systems S1 Information Technology S1 Computer Engineering S1 Electrical Engineering S1 Civil Engineering

faculty of Economics and Business
S1 Management S1 Accountancy

Faculty of Letters and Educational Sciences
S1 English literature S1 English language education S1 Mathematics education S1 Sports Education

Bartini DAR - Wikipedia

From Wikipedia, the free encyclopedia

DAR

Role	Arctic reconnaissance flying boat Type of aircraft
National origin	USSR
Manufacturer	ZOK NII GVF
Designer	Roberto L. Bartini
First flight	Spring 1936
Number built	1

The DAR (Dalnii Arkticheskii Razvyedchik – long range Arctic reconnaissance), was a twin-engined flying boat designed and produced in the USSR from 1934.

Development

In 1934 Roberto L. Bartini was assigned to the ZOK NII GVF (Zavod Opytno Konstrooktorskoye Naoochno-Issledovatel'skiy Institoot Grazhdanskovo Vozdooshnovo Flota — Factory for Special Construction at the Scientific Test Institute for the Civil Air Fleet), to lead the design of the DAR. Built entirely of Enerzh-6 stainless steel, the DAR closely resembled the Dornier Wal, with a high length to beam ratio hull, sponsons either side of the hull, strut supported parasol wing and twin engines in a single nacelle in the centre of the wing. Initially Bartini intended the two engines to drive separate propellers running in a tubular shroud, much like a modern ducted fan; Tests at TsAGI (Tsentrahl'nyy Aerodinamicheskiy i Ghidrodinamicheskiy Institoot - central aerodynamics and hydrodynamics institute) confirmed Bartini's theories but the prototype was completed with a conventional tandem tractor/pusher engine nacelle.

Apart from the 'Enerzh-6' construction material, the DAR had several other innovations, including; full span slotted flaps, and pivoting wing-tip ailerons which were in two sections, fore and aft. During later testing steel faced skis were attached to the fuselage sides by rubber bag springs. Flight testing was carried out at the small boat port at Leningrad in the spring of 1936, with no major problems, and five more were ordered but production was not carried out.

Specifications (DAR)

Data from Encyclopaedia of Russian Aircraft 1875-1995^[1]

General characteristics

Length: 19.0 m (62 ft 4 in)
Wingspan: 27.4 m (89 ft 11 in)
Wing area: 100 m² (1,100 sq ft)
Empty weight: 4,820 kg (10,626 lb)
Max takeoff weight: 7,200 kg (15,873 lb)
Powerplant: 2 × Hispano-Suiza 12Ybrs V12 engines, 640 kW (860 hp) each

Performance

Maximum speed: 240 km/h (150 mph, 130 kn)
Cruise speed: 229 km/h (142 mph, 124 kn)
Range: 2,000 km (1,200 mi, 1,100 nmi)
Endurance: 20 hr

References

^ Gunston 1995, p. 42

Gunston, Bill (1995). The Osprey Encyclopedia of Russian Aircraft 1875–1995. London: Osprey. p. 381. ISBN 1-85532-405-9.

External links

Wikimedia Commons has media related to Bartini DAR.

https://web.archive.org/web/20070703081400/http://www.aviation.ru/Bartini/

v t e Bartini aircraft
A-57 Be-1 DAR Stal-6 Stal-7 Stal-8 T-108 T-117 T-200 VVA-14 14M1P

Categories:

Hidden categories:

Development

Specifications (DAR)

See also

References

External links