SOME MODELS WHICH HAVE WON
MEDALS AT OPEN COMPETITIONS.
Fig. 57.—The G.P.B. Smith Model.
The model shown in Fig. 57 has won more competition medals than any other. It is a thoroughly well designed[53] and well constructed model. Originally a very slow flyer, the design has been simplified, and although by no means a fast flyer, its speed has been much accelerated. Originally a one-propeller machine, it has latterly been fitted with twin propellers, with the idea of obtaining more directional control; but in the writer's opinion, speaking from personal observation, with but little, if any, success. The steering of the model is effected by canting the elevator. Originally the machine had ailerons for the purpose, but these were removed owing, I understand, to their retarding the speed of the machine.
In every competition in which this machine has been entered it has always gained very high marks for stability.
Fig. 58.—The Gordon-Jones Dihedral Biplane.
Up to the time of writing it has not been provided with anything in the nature of fins or rudder.
Fig. 58 is a biplane very much after the type of the model just alluded to, but the one straight and one curved aerofoil surfaces are here replaced by two parallel aerofoils set on a dihedral angle. The large size of the propeller should be noted; with this the writer is in complete agreement. He has not unfortunately seen this model in actual flight.
The scientifically designed and beautifully made models illustrated in Fig. 59 are so well known that any remarks on them appear superfluous. Their efficiency, so far as their supporting area goes, is of the highest, as much as 21 oz. per square foot having been carried.