A KLM Fokker F.VII being refuelled at Croydon in 1927. It is fitted with a twisted slab dural propeller, presumably of German origin.

Самолёты на фотографии: Aircrafts on the photo: Fokker F.VII / C-2 / F.XIV - НидерландыNetherlands - 1924

The smoothly-streamlined cowlings of the Supermarine S.6 concealed a 1,900 h.p. Rolls-Royce R engine, nothing is visible but the exhaust ports. Note the coarse pitch of the propeller.

Самолёты на фотографии: Aircrafts on the photo: Supermarine S.5 / S.6 - ВеликобританияUnited Kingdom - 1927

Hard Work Ahead: A.V. Roe smiles philosophically in front of his early machines after a fairly typical landing - the metal paddle-bladed propeller is severely bent, but in one piece.
The "crash" was the result of outgrowing his "aerodrome," for on one occasion he remained up until the boundary line was reached, and attempting to turn resulted as shown! This machine was the forerunner of the tractor-fuselage types of aircraft which became common in subsequent years.

Самолёты на фотографии: Aircrafts on the photo: Avro Triplane I - III - ВеликобританияUnited Kingdom - 1909

ON TEST: Col. Roscoe Turner and Mr. Clyde Pangborn flying the Boeing 247-D on a test flight before shipping it to this country. The machine is now at Heston.
The first Boeing 247 airliner was fitted with fixed-pitched metal propellers. The aircraft’s performance was enhanced considerably with the fitting of VP units.

Самолёты на фотографии: Aircrafts on the photo: Boeing Model 247 - СШАUSA - 1933

Hawker High-Speed Fury with Kestrel engine and an experimental radiator installation. The two-bladed wooden propeller was characteristic of most fighters of the period.

Самолёты на фотографии: Aircrafts on the photo: Hawker Fury - ВеликобританияUnited Kingdom - 1931

An interesting attempt at a simple VP propeller was the American Everel, dubbed the "amputated airscrew". The blade was pivoted on an oblique bearing and reacted to centrifugal and aerodynamic forces to change pitch through a limited range. It could be used only on small, low-powered aircraft, like the Cub.
Like most unorthodox pieces of machinery, the Everel airscrew looks a little uncouth until one becomes used to its appearance.

Самолёты на фотографии: Aircrafts on the photo: Taylor Cub - СШАUSA - 1931

The massive 68ft-span Avro Aldershot heavy bomber prototype, J6852, powered by a 1,000 h.p. Napier Cub. The man standing at right gives some idea of the size of the wooden four-bladed propellar.

Самолёты на фотографии: Aircrafts on the photo: Avro Aldershot / Type 549 - ВеликобританияUnited Kingdom - 1922

Unorthodox laminated wooden propeller on an airborne plumber’s nightmare, the Sablatnig PI of 1919.

Самолёты на фотографии: Aircrafts on the photo: Sablatnig C.I/C.II/N.I/P.I - ГерманияGermany - 1917