10
Wednesdav, January 27. 1988 / University Daily Kansan
NASA finds defective shuttle seal
The Associated Press
WASHINGTON — Detective work led NASA engineers to a critical seal in a space shuttle main engine that was improperly welded by the manufacturer, the space agency said yesterday. Repair may require replacement of turbo pumps on all three shuttle engines.
The effect of this and other new problems on plans for the first post-Challenger liftoff still is being
assessed, said David L. Winterhalter, director of systems analysis and engineering at NASA.
The target date is mid-August, but NASA administrator James C. Fletcher has delayed setting a firm date.
While disassemble and inspecting one of the high-pressure fuel turbo pumps on a main engine last Friday, engineers found cracks in a so-called fish-mouth seal. It was
determined that the cracks were "use-related" — caused by firing the engine.
To check further, engineers made a cross-section cut in the part and found that the seal, which is fabricated from two metal pieces, had not been welded properly when it was manufactured.
Still, two engines were mounted over the weekend on the shuttle Discovery, the first of the fleet to be
flown when missions resume. The third engine was put in place last week.
"We are going to try to leave the engines as they are so we can do some preliminary checks." Winter's pumps ready to install. "The three other pumps ready to install."
he said that high pressure fuel pumps had been replaced before while the shuttles' three engines were mounted.
rest of the economy was better protected from the spillover effects of plummeting stock prices.
Tired of standing in line to leave the nest?
"We will probably never know how close we came to the disaster," he said. "But we can, and must, learn from the last crisis."
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Bowsher said there had been increasing links in recent years among the nation's various markets, such as those that traded stocks and others that traded futures.
The Federal Reserve System did an admirable job in October of protecting the economy from the effects of the crash by managing the money supply, Bowsher said. But he said that if Congress decided to allow banks to participate more in the stock market, the Fed's role "would become significantly more complex and difficult."
including the 508-point drop of the Dow Jones industrial average on Oct. 19.
The preliminary report by GAO, Congress' investigative arm, is the second major government study of last October's events on Wall Street, including the 508-point drop of the Dow Jones industrial index on Oct. 19.
19
Official calls for new market regulations
WASHINGTON — The government needs to evaluate how it regulates the nation's financial markets to help prevent a repeat of October's stock market crash, the chief of the General Accounting Office said yesterday.
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In remarks prepared for delivery to lawmakers, Charles A. Bowsher also said that steps must be taken to insure that individual investors were treated as fairly as large institutions and that the
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The Associated Press
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