The aircraft was designed in 1929 by a Romanian engineer Romulus Bratu, who worked in France. Quite unusual was its arrangement, with one engine in a fuselage front, and the other two in a common nacelle over a wing, in a push-pull configuration. A model was tested in a laboratory of St. Cyr Aeronautical Institute. Parts of the plane were made in a factory at Athis-Mons, and assembled in the CIDNA workshops at Le Bourget airport.
The prototype was flown on 26 November 1932 and after tests, received a French airworthiness certificate. The plane had high useful load 4500 kg and could fly on two engines. In March 1933 it was shown to the French Minister of Air Pierre Cot.
Description
High-wing cantilever monoplane of wooden construction, with closed cab, three engines, and a fixed landing gear. Sparless wing, with slightly swept leading edge, straight rear edge and rounded tips, was basing on a geodetical structure of crossing ribs. Crew sat in a cab before the wing. Next and below in the fuselage, under the wing, there was a cabin for 10 passengers, with rectangular windows and access doors in front and at the rear. The landing-gear was of the conventional-type, with a tailwheel.
A single Gnome-Rhône Jupiter 420 hp radial engine was mounted in the nose of the fuselage, while two Gnome-Rhône Titan 230 hp radial engines were in a common nacelle on struts above the fuselage and wing, one of them was tractor, the other one pusher (push-pull configuration). All engines drove two-blade propellers and had no covers.
Borget, Michel (December 1969). "Un avion nommé Bratu" [An Aircraft Named Bratu]. Le Album de Fanatique de l'Aviation (in French) (6): 7–9. ISSN 0757-4169.
External links
Wikimedia Commons has media related to Bratu 220.
Photos and drawings at Ugolok Neba site
February 15, 2023
bratu, bratu, franco, romanian, prototype, three, engined, airliner, 1930s, built, france, role, passenger, aircraftdesigner, romulus, bratufirst, flight, november, 1932status, prototypenumber, built, contents, development, usage, description, specifications, . The Bratu 220 was a Franco Romanian prototype three engined airliner of the 1930s built in France Bratu 220Role Passenger aircraftDesigner Romulus BratuFirst flight 26 November 1932Status prototypeNumber built 1 Contents 1 Development and usage 2 Description 3 Specifications 4 See also 5 References 6 Bibliography 7 External linksDevelopment and usage EditThe aircraft was designed in 1929 by a Romanian engineer Romulus Bratu who worked in France Quite unusual was its arrangement with one engine in a fuselage front and the other two in a common nacelle over a wing in a push pull configuration A model was tested in a laboratory of St Cyr Aeronautical Institute Parts of the plane were made in a factory at Athis Mons and assembled in the CIDNA workshops at Le Bourget airport The prototype was flown on 26 November 1932 and after tests received a French airworthiness certificate The plane had high useful load 4500 kg and could fly on two engines In March 1933 it was shown to the French Minister of Air Pierre Cot Description EditHigh wing cantilever monoplane of wooden construction with closed cab three engines and a fixed landing gear Sparless wing with slightly swept leading edge straight rear edge and rounded tips was basing on a geodetical structure of crossing ribs Crew sat in a cab before the wing Next and below in the fuselage under the wing there was a cabin for 10 passengers with rectangular windows and access doors in front and at the rear The landing gear was of the conventional type with a tailwheel A single Gnome Rhone Jupiter 420 hp radial engine was mounted in the nose of the fuselage while two Gnome Rhone Titan 230 hp radial engines were in a common nacelle on struts above the fuselage and wing one of them was tractor the other one pusher push pull configuration All engines drove two blade propellers and had no covers Specifications EditData from 1 General characteristicsCrew 2 Capacity 10 passengers Length 17 37 m 57 ft 0 in Wingspan 25 m 82 ft 0 in Wing area 83 m2 890 sq ft Empty weight 4 400 kg 9 700 lb Gross weight 9 000 kg 19 842 lb Powerplant 1 Gnome et Rhone 9A 9 cyl air cooled radial piston engine 310 kW 420 hp Powerplant 2 Gnome et Rhone 5K Titan 5 cyl air cooled radial piston engines 170 kW 230 hp eachPerformance Maximum speed 200 km h 120 mph 110 kn See also EditAircraft of comparable role configuration and era PZL 4References Edit Gugju Ion Iacobescu Gheorghe Ionescu Ovidiu Romanian Aeronautical Constructions 1905 1974 Brasov Bibliography EditBorget Michel December 1969 Un avion nomme Bratu An Aircraft Named Bratu Le Album de Fanatique de l Aviation in French 6 7 9 ISSN 0757 4169 External links Edit Wikimedia Commons has media related to Bratu 220 Photos and drawings at Ugolok Neba site Retrieved from https en wikipedia org w index php title Bratu 220 amp oldid 1039116094, wikipedia, wiki, book, books, library,
