Gloster II
1920s British sport floatplane
title: "Gloster II" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["1920s-british-sport-aircraft", "schneider-trophy", "floatplanes", "gloster-aircraft", "single-engined-tractor-aircraft", "biplanes", "aircraft-first-flown-in-1924"] description: "1920s British sport floatplane" topic_path: "sports" source: "https://en.wikipedia.org/wiki/Gloster_II" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary 1920s British sport floatplane ::
::data[format=table title="Infobox aircraft"]
| Field | Value |
|---|---|
| name | Gloster II |
| aircraft_type | Racing seaplane |
| national_origin | United Kingdom |
| manufacturer | Gloster Aircraft Company |
| designer | Henry Folland |
| number_built | 2 |
| first_flight | 19 September 1924 |
| developed_from | Gloster I |
| :: |
| name = Gloster II | logo = | logo_size = | image = | alt = | caption = | long_caption = | other_names = | aircraft_type = Racing seaplane | aim = | outcome = | related = | national_origin = United Kingdom | manufacturer = Gloster Aircraft Company | design_group = | designer = Henry Folland | builder = | issuer = | status = | owners = | primary_user = | more_users = | service = | major_applications = | proposals = | prototypes = | number_built = 2 | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = | introduction = | retired = | first_flight = 19 September 1924 | initiated = | in_service = | last_flight = | expected = | developed_from = Gloster I | variants = | developed_into = | preservation = | fate = | predecessors = | successors = | concluded = The Gloster II was a British racing floatplane of the 1920s. A single-engined biplane, two were built to compete in the 1924 Schneider Trophy air race. However the crash of the first prototype during testing meant that it could not be made ready for the race, which was postponed. The second aircraft was also lost in a crash.
Design and development
The 1923 Schneider Trophy race for seaplanes had been won by the United States Navy with the Curtiss CR-3, a floatplane which outclassed Britain's entry, the Supermarine Sea Lion III flying boat. In a change from previous years, where Britain's entries had been privately funded, the British Air Ministry ordered two racing seaplanes from the Gloster Aircraft Company to compete for the 1924 race.
The resulting aircraft, designated the Gloster II, was a floatplane development of Gloster's earlier Gloster I racing aircraft, which had won the annual Aerial Derby air race three years running between 1921 and 1923, and had attempted unsuccessfully to break the World airspeed record in 1922. It was a small single-seat biplane of fabric covered wooden construction, powered by a closely faired Napier Lion engine. It had short-span single bay wings and a twin float undercarriage, with radiators mounted on the struts supporting the floats.
The first aircraft, with the serial number J7504, was ready for flight testing in September 1924. However, when attempting to land after its first test flight, on 19 September 1924, the undercarriage collapsed and the aircraft sank, with pilot Hubert Broad escaping unhurt. There was insufficient time to prepare the second aircraft for the race, scheduled for October, but as no other European nation had an entry ready to compete, the Americans postponed the race until 1925.
The second aircraft was converted to a landplane and used for flight testing equipment to be used for the Gloster III racer being designed for the 1925 competition. It was lost in a high-speed crash landing at RAF Cranwell following elevator flutter in June 1925, the pilot, Larry Carter, being seriously injured, fracturing his skull.
Specifications (Gloster II seaplane)
|ref= Gloster Aircraft since 1917 |prime units?=imp General characteristics
|crew=1 |length ft=26 |length in=10 |length note= |span ft=20 |span in=0 |span note= |height ft=11 |height in=0 |height note= |wing area sqft=165 |wing area note= |aspect ratio= |airfoil= |empty weight lb=2500 |empty weight note= |gross weight lb=3100 |gross weight note= |max takeoff weight lb= |max takeoff weight note= |fuel capacity= |more general= Powerplant
|eng1 number=1 |eng1 name=Napier Lion VA |eng1 type=W-12 water-cooled piston engine |eng1 hp=585 |eng1 note=
|prop blade number=2 |prop name=fixed-pitch propeller |prop dia ft= |prop dia in= |prop dia note= Performance
|max speed mph=225 |max speed note= |cruise speed mph= |cruise speed note= |stall speed mph= |stall speed note= |never exceed speed mph= |never exceed speed note= |range miles= |range note= |ferry range miles= |ferry range note= |endurance= |ceiling ft= |ceiling note= |climb rate ftmin= |climb rate note= |time to altitude= |lift to drag= |wing loading lb/sqft=18.8 |wing loading note= |fuel consumption lb/mi= |power/mass=0.19 hp/lb |more performance=
References
- "British Schneider Cup Seaplane Lost" Flight, 25 September 1924. p. 630.
- "The Accident to the Gloster II". Flight, 18 June 1925. p. 374.
- Jackson, A.J. British Civil Aircraft since 1919: Volume 2. London:Putnam, Second edition 1973. .
- James, Derek J. Gloster Aircraft since 1917. London:Putnam, 1971. .
- Mondey, David. "Britain Captures Schneider Trophy". Air Enthusiast, Seventeen, December 1981 – March 1982. Bromley, Kent, UK:Pilot Press. pp. 36–50.
References
- Mondey 1981, p. 40.
- James 1971, p. 107.
- James 1971, pp. 69–73.
- ''Flight'' 25 September 1925, p. 630.
- Jackson 1973, p. 313.
- Mondey 1981, pp. 40–41.
- James 1971, pp. 109–110.
- ''Flight'' 18 June 1925, p. 374.
- James 1971, p. 110.
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