Word: solider
(lookup in dictionary)
(lookup stats)
Dates: during 1950-1959
Sort By: most recent first
(reverse)
...short, with this zesty production by Basil Langton, the Group 20 Players have another solid hit on their hands...
...missionaries, it was said, "came to do good-and they did well." After building a basic, solid structure of up-to-date education and Christianity, the missionaries stayed on, became sugar planters. Sugar became big business, and soon the new landowners began importing Chinese coolie labor. By 1890, the missionaries-turned-businessmen were operating 72 plantations, exporting more than 25 million Ibs. of sugar a year. Born in the boom were the "Big Five" factoring companies, set up to handle the business of the sugar plantations. Gradually, they took over the functions of business agent, banker, labor supplier and arbiter...
Sonic control has many possibilities besides smoothing the pressure curve of burning fuel. It may develop into a way to program the complete flight of a solid-propellant missile. Shifting sound levels could vary the thrust to give the rocket better maneuvering capabilities; fuel might also be compounded that does not burn at all unless the rocket's cavity is filled with powerful sound, thus accomplishing total cutoff with the whistle. The big spaceships that NASA plans to toss into space will use clusters of rocket engines. If they are solid fueled and equipped with whistles, they could...
Acoustica engineers explain that when a solid fuel burns in a high-pressure combustion chamber, the components, e.g., ammonium perchlorate and polystyrene, turn to gases that mix in a thin layer on its surface. Part of the heat generated strikes back to the fuel, gasifies more of it, and so keeps the flame burning. When this characteristic was discovered by Dr. Martin Summerfield of Princeton, the next step was to look for something that would control the gas mixture. A faster mixing would increase the burning rate, while slower mixing would decrease it. If the control were precise enough, scientists...
...burns at an uneven rate: as the fuel is consumed, the cavity gets bigger and exposes more surface to the heat. Since the amount of hot gas generated is proportional to the area of burning fuel, the gas pressure keeps rising until just before burnout. The effect is that solid-fuel rockets of this type must have superstrong casings to hold the peak pressure, and must thus pay a penalty in weight...