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Mathematical interpretation on general airplane properties.

The future French training types will be studies in all-metal construction. The Gordou monoplane is a very representative type of French, single-seater pursuit, although it is under-powered to meet the new pursuit requirement. The fuelage, landing gear, and tail surfaces are duralumin tubing with steel fittings, very similar to the Breguet type. Bi-place pursuit and reconnaissance types can be realized with the 55 h.p, engine, but in as much as this necessitates a very heavy machine, the French have so far confined themselves to low-powered motors equipped with superchargers to obtain high performance at altitudes with less structural weight.

Detachable tanks are considered very much better than the rubber coated tanks where it is possible to use them. Most of the French types have been designed and laid out for long distance work of an offensive nature.They require a large amount of gas in order to fulfill their missions. The French have stipulated that the excess gas to be carried for the cross-country passage to combat points, may be placed in removable tanks to an average extent of about one fourth of the total amount of fuel required. The position installation of these

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