M.Goodall, A.Tagg British Aircraft before the Great War (Schiffer)
Deleted by request of (c)Schiffer Publishing
P.Lewis British Aircraft 1809-1914 (Putnam)
The single-seat tractor Daisy or Dirigoplane monoplane was designed and built in 1909 by Eugene V. Gratze. It was powered by the eight-cylinder 40 h.p. J.A.P. engine, and was fitted with elevators mounted above the wings and with balancing flaps on the leading-edges towards the wing-tips. The wings were attached to the fuselage by universal joints which permitted variable incidence and variable dihedral. The propeller was mounted on a universal joint and was interconnected with the tail unit to facilitate turning. The Daisy first flew in November, 1909, and in June, 1910, was at Canewdon, near Southend, Essex, for further testing. Span, 40 ft. Length, 28 ft. 6 ins.
Flight, December 18, 1909
To the Editor of FLIGHT.
SIR, - I herewith enclose a photograph of my monoplane, which contains several new and distinctive features which are protected by patents.
First, the steering is executed by the propeller, which works on a universal swivel joint. The wings are also pivoted on a junction of the frame on a patent universal-joint which enables them to be swivelled in any direction, i.e., up or down, backwards or forwards, and to alter the angle of inclination or incidence.
The motor is an 8-cyl. 40-h. p. air-cooled engine.
Yours faithfully, p.p. E. V. GRATZE,
Flight, May 28, 1910
New Gratze Monoplane.
FOLLOWING somewhat the lines of his old machine, Mr. Eugene V. Gratze has now completed his new monoplane, and is ready for trial at Cahewdon, near Southend-on-Sea, it being formerly christened "Daisy" last week by breaking a bottle of wine over the propeller. The steering is performed by means of the propeller, while the elevating is regulated by an overhead plane placed slightly forward of the main plane. Lateral stability is effected by means of two flaps at the ends of the main planes. Mr. Gratze has secured a good flying ground at Canewdon, which runs along the Crouch for two miles, and has a superficial area of about 200 acres, all perfectly flat. He will be pleased to arrange for anyone wishing to share the ground.