Word: wingspans
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With its soft. length and 22-ft. wingspan, the X-15 looks more like a missile than an airplane. A sophisticated descendant of the X-1 rocket plane in which Test Pilot "Chuck" Yeager first broke the sound barrier (TIME, June 21, 1948), it is expected to reach 3,600 m.p.h.-twice the speed of a high-powered rifle bullet. Since such speeds cannot be maintained in the lower atmosphere, the X-15 will be carried to 35,000 ft. by a B-52, will then climb to an altitude of 100 miles. Burning liquid ammonia and liquid oxygen...
Once out of the hangar, the B-19's wings seemed to grow. She is 212 ft. in wingspan: from tip to tip her span equals the height of a 20-story building. On the runway, Douglas' flying battleship began to show the heft of her weight: 80 tons fully loaded (twice the weight of Pan American's big Boeing Clippers). Her left wheel found a soft spot in the macadam, sank 18 inches. She was rolled out, finally tied down not far from 28th Street, where Santa Monicans eyed her with wonder. Over and through...
...weight and speed took the big (74-ft. wingspan) Heinkel through the top of an apartment house, well into a group of seaside villas beyond. There followed a shattering roar of gas tanks and bombs. Firemen, ambulancemen, air-raid wardens hurried to the flaming wreck. Behind them an eager, half-dressed crowd collected. Windows went...
...biggest, almost the fastest land transport plane in the U. S. It has a wingspan of 138 ft. 3 in., overall length of 97 ft. Nearly three times as heavy as the familiar DC-3, which is at present the favorite transport of all U. S. airlines, DC-4 will carry 42 passengers as a day plane, 30 passengers as a sleeper. Its top speed will be 240 m.p.h. Its 32½ tons will hurtle through the air a full mile in 15 seconds...
...next week is really the fourth DC-4. First was a "mock-up"-a full-sized wooden replica, exact in every detail, for a study of space requirements, load placement, general structure. DC-4 No. 2 was a perfect scale model, with 8 ft. 3 in. wingspan. This Lilliputian transport "flew" through 1,100 hours and $25,000 worth of wind tunnel tests at the Guggenheim Aeronautical Laboratory at Caltech. Third stage was a Spanish Inquisition by Douglas engineers, who systematically squeezed, banged, shook, stretched, heated, froze, destroyed every part, every material. They built huge testing machines many times...