Ryan M-1

The Ryan M-1 was a mail plane produced in the United States in the 1920s, the first original design built by Ryan. It was a conventional parasol-wing monoplane with two open cockpits in tandem and fixed, tailskid undercarriage.

Design and development

The follow-on M-2 was substantially the same as the M-1. The prototype M-1 was originally powered by a Hispano-Suiza 8A, but production examples featured a variety of engines in the same general power range, with the Wright J-4B chosen for nine of the sixteen M-1s built, and the prototype later refitted with this engine.

Operational history

A M-1 was flown in the 1926 Ford National Reliability Air Tour.

Pacific Air Transport operated J-4B-powered M-1s and M-2s on their demanding Seattle–San Francisco–Los Angeles mail route, while Hispano-Suiza-powered machines flew with Colorado Airways between Cheyenne and Pueblo and Yukon Airways between Whitehorse and Dawson City.

One M-2 (named Bluebird) was built with a fully enclosed cabin for the pilot and four passengers, foreshadowing Ryan's highly successful Brougham series. The standard M-2, meanwhile, was Charles Lindbergh's first choice for his transatlantic flight. His list of requirements for the aircraft soon made it apparent, however, that rather than modifying an M-2, it would be more effective to build an all-new design along the same general lines, which resulted in the Ryan NYP Spirit of St Louis.

M1

M1, M01 or M-1 may refer to:

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M-1 (Lithuanian radio station)

M-1 is the first commercial radio station in Lithuania, broadcasting from the capital city of Vilnius. The station was established on 31 December 1989.

The first song played on M-1 was "Radio Ga Ga" by Queen.

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Coordinates: 54°42′8″N 25°13′17″E / 54.70222°N 25.22139°E / 54.70222; 25.22139

Automatic Digital Computer M-1

The project to build the Automatic Computer M-1 was completed in December 1951 at the Energetics Institute of the USSR Academy of Sciences. In charge of the Laboratory of Electrosystems was I.S. Brouk, who obtained the first domestic patent with the title "Digital Computer with Common Bus" in 1948.

Work to build the computer based on Brouk's design began in 1950. Parts were very difficult to get due to postwar rationing. On the other hand, due to availability of copper oxide diodes which were brought as trophies from Germany, the machine had the lowest lamp count of contemporary designs, at 730. The memory was based on an original invention of an electrostatic memory using the ordinary oscilloscope cathod ray tube. Each tube was capable of holding 32 words, 25 bit each. The computer had 8 such tubes for a total fast memory of 256 machine words. (Russian:)

The computer turned out to work rather reliably and was immediately put to practical use, for numerical calculations in nuclear physics. For a period of about a year this was the first and the only working digital computer in Russia, and one of the first in the world.