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Updated: May 15, 2025
Roe was a firm believer in the triplane form of machine, and his first experiments in flight were made with a triplane equipped with an engine which developed only 9 horse-power. Later on, he turned his attention to the biplane, and with this craft he has been highly successful. The Avro biplane, produced in 1913, was one of the very best machines which appeared in that eventful year.
From the design of this model he built a full-sized machine, and made a first flight on it, fitted with a 24 horse-power Antoinette engine, in June of 1908 Later, he fitted a 9 horsepower motor-cycle engine to a triplane of his own design, and with this made a number of short flights; he got his flying brevet on a triplane with a motor of 35 horse-power, which, together with a second triplane, was entered for the Blackpool aviation meeting of 1910 but was burnt in transport to the meeting.
No practical machine has been built with more than three main planes; indeed, the triplane is now almost obsolete. The Wrights fitted their machine with two long-bladed wooden screws, or propellers, which by means of chains and sprocket-wheels, very like those of a bicycle, were driven by the engine, whose speed was about 1200 revolutions a minute.
This was a radical departure from some of the more usual gun positions, in which the gun was customarily located on the upper plane and operated by the observer. Having a gun all to himself had pleased Richardson mightily, and he had become a wonderful shot. The second gun on the triplane was placed on the framework behind the observer's station.
Both the engine and the triplane model were exhibited at the first Aeronautical Exhibition held at the Crystal Palace in 1868. The triplane had a supporting surface of 28 sq. ft.; inclusive of engine, boiler, fuel, and water its total weight was under 12 lbs.
Blaine, having donned his rig on the run, as it were, was already in a triplane much like the one he had last used. Turning to the mechanic, he asked: "It cannot be my own machine, is it?" "Sure thing!" the man replied. "It was sent to us the day after you got in. We fixed her up, thinking you might need it. Glad you are out so soon, Ensign." "Thanks for that!
This period also saw the production of the first triplane, which was built by A. V. Roe in England and was fitted with a J.A.P. engine of only 9 horse-power an amazing performance which remains to this day unequalled.
The record aeroplane as regards size at the time of its construction was the Tarrant triplane, which made its first and last flight on May 28th, 1919.
"He'd better fly soon, then, or he'll be in the ditch," said Tom grimly, for a little, sluggish stream crossed the meadow not far from where Andy had started. The next instant, thinking he had momentum enough, Andy tilted his elevation plane. The clumsy triplane rose into the air and shot forward. "There he goes!" cried Sam. "Hurrah!" yelled the crowd.
Mr Roe's triplane was chiefly interesting otherwise for the method of maintaining longitudinal control, which was achieved by pivoting the whole of the three main planes so that their angle of incidence could be altered. This was the direct converse of the universal practice of elevating by means of a subsidiary surface either in front or rear of the main planes.
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