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Data from The British Bomber since 1914, Aircraft Profile No. 62: The de Havilland D.H.9 General characteristics Crew: two Length: 30 ft 5 in (9.27 m) Wingspan: 42 ft 4 + 5 ⁄ 8 in (12.919 m) Height: 11 ft 3 + 1 ⁄ 2 in (3.442 m) Wing area: 434 sq ft (40.3 m 2) Airfoil: RAF-16 Empty weight: 2,360 lb (1,070 kg) Gross weight: 3,790 lb (1,719 kg) Powerplant: 1 × Armstrong Siddeley Puma 6 ...
RCAF DH.82C Tiger Moth, 1941. Flown for the first time on 26 October 1931, the DH.82 Tiger Moth was derived from the DH.60 Moth.The DH 82 was powered by a 120-hp Gipsy II engine, but the 1939 DH.82a received the 145-hp Gipsy Major.
The Airco DH.1 was an early military biplane of typical "Farman" pattern flown by Britain's Royal Flying Corps during World War I.By the time the powerplant for which it was designed was sufficiently plentiful it was obsolete as an operational aircraft, and apart from a few examples sent to the Middle East it served as a trainer and Home Defence fighter.
The DH.18 was designed and built in 1919 by Airco as their first aircraft specifically for commercial work, earlier aircraft such as the DH.16 being modified military types.
Data from De Havilland Aircraft since 1909 General characteristics Crew: 2 Length: 23 ft 11 in (7.29 m) Wingspan: 30 ft 0 in (9.14 m) Height: 8 ft 9 + 1 ⁄ 2 in (2.680 m) Wing area: 243 sq ft (22.6 m 2) Empty weight: 920 lb (417 kg) Max takeoff weight: 1,650 lb (748 kg) Powerplant: 1 × de Havilland Gipsy I 4-cylinder air-cooled in-line piston engine, 100 hp (75 kW) Propellers: 2-bladed fixed ...
D&H Distributing was founded as Economy Tire and Rubber, a tire retreading company, established by brothers-in-law David Schwab and Harry Spector. In 1921, the company began selling wholesale parts for automobile service industry, adding crystal radios by 1926 and moving into a distribution capacity by signing with radio manufacturer Philco.
In 1917, training of RFC pilots began to receive a long overdue overhaul. The School of Special Flying at Gosport in Hampshire was established by Maj. Robert R. Smith-Barry with the aim of making flight instructors into specially trained experts – rather than entrusting the role to novices who had barely completed their own training, [9] and operational pilots being "rested" to recover from ...
The E-plane and H-plane are reference planes for linearly polarized waveguides, antennas and other microwave devices.. In waveguide systems, as in the electric circuits, it is often desirable to be able to split the circuit power into two or more fractions.