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is practically the same as the BR, which has been described.

This machine is equipped with a nose radiator. It has not been built to date but the Fiat Company hopes to build it very soon for the Italian Air Service, which has on hand two thousand 300 horsepower Hispano engines which they intend to use very shortly in their new programme in equipping all their future pursuit planes. The description of this machine is as follows:

MANUFACTURERS' DESCRIPTION. CELLULE. The cellule is biplane and the two surface planes are joined together by an entirely rigid structure which assures a high static resistance, indeformability, and a lower head resistance than that obtained with other cellules of ordinary type.

Because of the special system of rigid mounting adopted, the lower wing is longer than the upper. The ailerons are actuated by a rigid tube control. Little universal joints are applied to the control tube in order to render control easier even during acrobatic evolutions.

The longer lower wing has also the advantage of lowering the center of gravity of the machine, bringing it nearer to the center of surface pressure, (generally high), in a matter which assures easy guidance of the machine in all directions. It

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