In Partnership With

June 1, 1919

Development of the NC Seaplanes

Course in Aerodynamics and Airplane Design

Veneer Body Construction


Development of the NC Seaplanes

The history of the inception and development of the NC seaplanes, with additional information on some of their hitherto unknown constructional features and equipment, has been made public by the Navy Department and is printed herewith in part


Course in Aerodynamics and Airplane Design

Part III.—Experimental Aeronautical Engineering


Veneer Body Construction

Widman USXB-1 Type—This body, built for a Bristol-type two-seater fighter, had longerons of solid gray elm, with laminated skin and bulkheads (Fig. 5). The outer plies in the bulkheads were alternately of elm and birch, while the core was of elm in some cases, and of poplar mahogany and birch in others.

Naval Airship C-5 Makes 1100-Mile Flight

The United States naval airship C-5, Lieut.-Comdr. E. W. Coil, U. S. N., commander, made on May 14-15 a non-stop flight of 970 nautical miles (1115 Sta. miles), from Montauk naval air station to St. Johns, N. F., in 25 hr. 40 min. According to a statement issued by the Navy Department, the cruise was undertaken for the purpose of testing the practical radius of action of this class of airships, as well as their ability to operate under varying weather conditions; the outcome of this flight would determine the advisability of having the C-5 attempt to cross the Atlantic under her own power.

Aircraft Transmitting Equipment, Type SE-1310

This aircraft transmitting set was designed and built by the International Radio Telegraph Co. of New York to meet the urgent need of an airplane transmitter to cover greater ranges than those in use at present. It was designed especially for use on seaplanes of the HS type, but was first installed on the NC type of flying boats in the recent trans-Atlantic flight.

Tailoring of Airship Envelopes


Chart for Performance Computations

Wind tunnel experiments have given us very complete data on the lift and drag of a wing of given section and aspect ratio. These lift data must then be corrected for the particular design in order to allow for biplane interference, aspect ratio, wingend form, and model ratio.


NC-3 and NC-4 Reach Azores


Hawker and Grieve



The Flight of the C-5

May 151919 June 151919