
Описание
Страна: Германия
Год: 1918
O.Thetford, P.Gray German Aircraft of the First World War (Putnam)
Brandenburg W 20
This little single-seat flying-boat was designed during 1917 for carrying aboard U-boats. It could be dismantled in 1 3/4 min. and stowed into space measuring only 20 ft. X 6 ft.; re-assembly took 2 3/4 min. As the type of submarine for which it was intended never went into service, only three examples of the W 20 were built. The first, No. 1551, had no interplane struts; these members were, however, added to the structure of Nos. 1552 - 1553, which also had the lower wing increased in span. Engine, 80 h.p. Oberursel UO. Span, 5.8 m. (19 ft. 0 3/8 in.), "1551"; 6.8 m. (22 ft. 3 3/4 in.), "1552/3". Length, 5.91 m. (19 ft. 4 5/8 in.), "1551"; 5.925 m. (19 ft. 5 1/8 in.), "1552/3". Area, 14.95 sq.m. (161 sq.ft.), "1551"; 15.82 sq.m. (171 sq.ft.), "1552/3". Weights: Empty, 396 kg. (871 lb.). Loaded, 568 kg. (1,250 lb.). Climb, 1,000 m. (3,280 ft.) in 14.9 min. Duration, 1 1/4 hr. Armament, none.
Описание:
- O.Thetford, P.Gray German Aircraft of the First World War (Putnam)
- C.Owers Hansa-Brandenburg Aircraft of WWI Vol.2: Biplane Seaplanes (A Centennial Perspective on Great War Airplanes 18)
- M.Dusing German Aviation Industry in WWI. Volume 1 (A Centennial Perspective on Great War Airplanes 84)
Фотографии
-
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)
Brandenburg W.20 #1552, Summer 1918.
-
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)
W.20 Marine Number 1551 with the wing support structure that proved unsafe. It was to be modified to that used on Marine Numbers 1552 and 1553.
-
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)
The First W.20, MN 1551, with cantilevered lower wing separate from the upper wing supports.
-
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)
Marine Number 1552 was the subject of the SVK test and drawings. This machine has conventional wing bracing and represented the final configuration for the type.
Three examples of the Brandenburg W20 single-seat flying-boat were built, the so-called 'type' aircraft which was the example of any new design evaluated by the seaplane experimental centre (SVK) at Warnemunde before being accepted for naval use (by the SAK). 1552 is seen on 14 March 1918. Intended to be carried as an aerial scout on submarines, it did not see operational service. The W20 was designed to be assembled and dismantled very quickly, using the minimum of hand tools; individual components were stowed in watertight air tubes on the submarine's deck. -
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)
Marine Number 1552 was the subject of the SVK test and drawings. This machine has conventional wing bracing and represented the final configuration for the type. Power was from an 80-hp Oberursel U.O rotary engine.
-
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)
W.20 MN 1552 had the its upper surfaces of wings, tail and hull in hexagonal camouflage. This was the standard German naval aircraft camouflage specified in April 1917.
-
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)
This is thought to be 1551 with the upper wing of less span than the lower. It appears to have a large amount of dihedral to the lower wing. Note the wing support struts conform to those shown on the Brandenburg three-view drawing. Alternatively it may be the full size mock-up built to test the feasibility of the proposal. (third version with "I" struts)
-
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)
This is thought to be 1551 with the upper wing of less span than the lower. The machine appears to have a large amount of dihedral to the lower wing. The wing support struts conform to those shown on the Brandenburg three-view drawing. Alternatively it may be the full size mock-up built to test the feasibility of the proposal.
-
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)
Brandenburg W.20 SVK Drawing
-
C.Owers - Hansa-Brandenburg Aircraft of WWI. Volume 2 - Biplane Seaplanes /Centennial Perspective/ (18)
Brandenburg W.20 Factory Drawing