Word: chambers
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...aboard the spacecraft designed without another complete system to back it. Like other systems, the engine had duplicate parts made to take over if its tanks, valves or propellant lines failed. But space and weight limitations had forced the manufacturer, Aerojet-General Corp., to include only a single combustion chamber, fuel injector and nozzle extension skirt (see illustration). The failure of any of these parts could have meant disaster...
...ensure reliability, engineers tried to make the engine as simple as possible. Devoid of any frills, the SPS engine consists basically of a combustion chamber and propellant (fuel and oxidizer) tanks. When valves to these tanks are opened, fuel flows from one tank and oxidizer to the other to meet in the combustion chamber, pushed by pressurized helium that takes the place of potentially troublesome pumps. Because the propellants are hypergolic-they react chemically and ignite on contact-no ignition system is needed. And to avoid including a complicated throttle, the engine burns only at its fully rated thrust...
...over a period of five years, Aerojet and NASA technicians fired SPS engines some 3,200 times without a malfunction before qualifying them for manned flight. Although the total firing time on the Apollo 8 mission was scheduled to take no more than seven or eight minutes, the combustion chamber was designed to operate for 121 minutes. During tests, it actually held up for more than 30 minutes without burning...
...four-story pink stucco building normally used by students at the Navy's Hospital Corps school; their families checked into the El Cortez Hotel atop a hill in the city's center, their bills to be paid with a $40,000 fund raised by the San Diego Chamber of Commerce. The men got some $200,000 in back pay and promptly unloaded some of it in the PX, opened for an hour despite the holiday. After a Christmas dinner, Bucher read a message from the families of Apollo 8's astronauts: "Your reunion has brought great...
...president of the investment-banking firm of Glore Forgan, William R. Staats, Inc., and as a member of other corporate boards. Nixon Law Partner John Mitchell (Attorney General) has been earning more than $200,000. Winton Blount (Postmaster General) is the nonsalaried president of the U.S. Chamber of Commerce, but his Alabama-based construction company has had contracts this year involving more than $100 million. He says his personal income has been "several times...