Flight, July 1934
NEW AEROPLANES IN KING'S CUP RACE
D.H. TECHNICAL SCHOOL "T.K.1"
This somewhat cryptic name has been given to a light two-seater biplane which has been built in the De Havilland Technical School. It was designed by Mr. M. Langley
in order that the students of the school might have more profitable and more interesting work than rebuilding machines of existing designs. It is a fairly straightforward biplane on accepted lines, with very little stagger and no sweep-back on its wings. The gap is unusually large, and the rear flying wires are carried forward from the top rear spar to the bottom front spar root fitting, making it easy to get in and out of the cockpits. The machine was originally designed to use the "Gipsy IV," a small inverted four-cylinder engine of 80 h.p., with which De Havillands were experimenting some time ago. This has now been replaced by a "Gipsy III" engine, with, of course, a consequent increase of performance. Geoffrey De Havilland, jun., who also acts as instructor to the Technical School Flying Club, will be flying the machine in the Race.
D.H. TECHNICAL SCHOOL "T.K.I"
D.H. "GIPSY III," 120 H.P. ENGINE.
Span 27 ft. (8,2 m)
Aspect ratio 7.6 to 1
Wing area 183.5 sq. ft. (17,1 m')
Gross weight 1,450 lb. (657,7 kg)
Tare weight 950 lb. (430,9 kg)
Wing loading 7.9 lb./sq. ft. (38,6 kg/m2)
Power loading 12.1 lb./h.p. (5,5 kg/hp)
The de Havilland Technical School’s T.K.1 of 1934 was built by the students under the author’s guidance. It later received the apt civil registration G-ACTK.
Another Selection of King's Cup Machines (3) DH Technical School "T.K.I," D.H. "Gipsy III" 120 h.p. engine.
UNLUCKY BUT UNDISMAYED: Capt. G. de Havilland (right) and his two sons, Geoffrey and Peter, had little luck in the race, but Geoffrey did get into the Final on "T.K.1" as fifth.
A GOOD EFFORT: The "T.K.1" designed and built by students of the de Havilland Technical School was flown into the Final by G. de Havilland, Jun.