The Chicago Aeronautical Show, organized by the Manufacturers Aircraft Association and the first of its kind ever held in the West, will open in the Coliseum on Jan. 8 and will run continuously until Jan. 15. Most of the American aircraft manufacturers are exhibiting their latest products in this show and interesting displays will be made by the Army, the Navy and the Aerial Mail Service.
Six airplanes built for the Post Office Department by the Glenn L. Martin Company of Cleveland have been completed and delivered to the government and are now awaiting the erection of suitable hangars to go into regularly scheduled service.
<p>Several 6-engined giants constructed at the SiemensSchuckert Workshops have been adapted to commercial transport work. Principal dimensions: Span, 48 m.; length, 21.6 m. ; height, 7.20 m. Chord of upper wing, 5.20 m. ; of lower, 4.50 m.</p>
The Farman Goliath transport airplane represents by virtue of its all-round performance a notable achievement in aeronautical engineering. This machine was originally designed as a long-range bomber, but as the armistice intervened before its construction was completed, the drawings were changed to allow for its use as a fast passenger carrier.
It is only occasionally that we have the privilege of examining a new engine which reveals originality and initiative on the part of the designer in striking out boldly into departures not copies from other machines, and which does not savor of the “ freak.”
In the early stages of aviation little attention was paid to the textile materials used on an airplane. Further than insisting upon a wing covering of silk or linen nothing was specified. The weight per unit area of the fabric, the texture, weaving, the number of threads to the inch in the warp and the filling, and the question of elasticity in the warp and filling, were all neglected, presumably because everyone assumed that a fabric of silk or linen supplied every need of an airplane wing covering.
A simple way of selecting a wing section will be found by taking the main factors of an airplane into consideration : the total weight, the brake horsepower, the propeller efficiency and_ the main performance characteristic : the landing speed.