Самолеты (сортировка по:)
Страна Конструктор Название Год Фото Текст

Friedrichshafen FF40

Страна: Германия

Год: 1916

Friedrichshafen - FF39 - 1916 - Германия<– –>Friedrichshafen - FF41 - 1916 - Германия


O.Thetford, P.Gray German Aircraft of the First World War (Putnam)


Friedrichshafen FF 40
  Carrying a crew of three, the FF 40 was a patrol seaplane powered with a single 240 h.p. Maybach engine mounted in the fuselage and driving twin tractor airscrews between the wings. Only a single aircraft (No. 669) was built and supplied to the German Navy during March 1916. Span, 21.0 m. (68 ft. 10 7/8 in.). Length, 12.43 m. (40 ft. 9 1/2 in.). Height, 4.4 m. (14 ft. 5 1/4 in.). Area, 88.9 sq.m. (960 sq.ft.). Weights: Empty, 1,829 kg. (4,024 lb.). Loaded, 2,539 kg. (5,586 lb.). Armament, one manually operated Parabellum machine-gun in nose.


J.Herris Friedrichshafen Aircraft of WWI (A Centennial Perspective on Great War Airplanes 21)


Friedrichshafen FF40

  Friedrichshafen's FF40 was another prototype to explore to potential of a non-standard configuration, in this case a fuselage-mounted single engine driving two propellers via gears and drive shafts. Like the FF34 and FF44, it was powered by a 240 hp Maybach and was a fairly large floatplane. It was a two-seater, class CFT, with the observer/gunner in the front cockpit, where he had an unobstructed view and field of fire. Unfortunately, the pilot was well aft, making communication and cooperation between the two crewmembers difficult during flight. Marine Number 669 remained the only prototype.

Friedrichshafen FF40 Specifications
Engine: 240 hp Maybach Mb.IV
Wing: Span Upper 21.00 m
Span Lower 19.00 m
Area 88.9 m2
General: Length 12.43 m
Height 4.45 m
Empty Weight 1,829 kg
Loaded Weight 2,539 kg
Maximum Speed: 125 km/h
Range: 650 km
Climb: 800 m 8 min
1,000 m 10.5 min


Журнал Flight


Flight, October 16, 1919.

SOME FRIEDRICHSHAFEN "MILESTONES"

"The F.F. 40.
  "This was a very interesting experimental machine, fitted with a 240 h.p. Maybach engine driving two tractor screws placed between the planes (Fig. 20). The performance and general handling of this machine were good, but the transmission was too heavy in proportion to the engine power.

J.Herris - Friedrichshafen Aircraft of WWI /Centennial Perspective/
FF40 Marine Number 669 shows its unusual configuration of a single engine driving two propellers via ZF bevel gears and propeller shafts, which were enclosed in streamlined fairings. (The Peter M. Bowers Collection/The Museum of Flight)
J.Herris - Friedrichshafen Aircraft of WWI /Centennial Perspective/
The FF40 was relatively large and powerful for a two-seat reconnaissance floatplane, but the power transmission system was heavy, limiting its equipment to a flexible gun and a wireless transmitter only with no receiver.
O.Thetford, P.Gray - German Aircraft of the First World War /Putnam/
Friedrichshafen FF 40
J.Herris - Friedrichshafen Aircraft of WWI /Centennial Perspective/
The single 240 hp Maybach Mb.IV engine in the FF40 drove two propellers via ZF bevel gears and propeller shafts. The FF40 was ordered in March 1916 and, despite its relatively complex power system, was quickly built and flown. First flight is reported to be in April 1916 with delivery to the SVK in August 1916.
J.Herris - Friedrichshafen Aircraft of WWI /Centennial Perspective/
J.Herris - Friedrichshafen Aircraft of WWI /Centennial Perspective/
Friedrichshafen FF40 SVK Drawing