November 21, 1994

November 21, 1994

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HEADLINE NEWS

IPTN ROLLS OUT N250 INTO CROWDED MARKET

By MICHAEL MECHAM

HEADLINE NEWS

'MISSING MASS' ENIGMA DEEPENS

By JAMES R. ASKER

HEADLINE NEWS

ATLANTIS MISSION VERIFIES MIR RENDEZVOUS SCHEME

By JAMES T. McKENNA

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HEADLINE NEWS

IPTN ROLLS OUT N250 INTO CROWDED MARKET

Indonesia's ambitious plans for the fly-by-wire turboprop include establishing a U.S. assembly plant. But will the world's regional airlines match its sales optimism?

By MICHAEL MECHAM

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HEADLINE NEWS

'MISSING MASS' ENIGMA DEEPENS

WASHINGTON New Hubble Space Telescope images have deepened the mystery of one of the most fundamental riddles of modern astronomy and physics—where and what is the "missing mass" of the universe? The new data strongly suggest the simplest explanation for the existence of "dark matter"—the unseen material whose gravitational influence on stars and galaxies can be seen—is no longer plausible.

By JAMES R. ASKER

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HEADLINE NEWS

ATLANTIS MISSION VERIFIES MIR RENDEZVOUS SCHEME

By JAMES T. McKENNA

3031
HEADLINE NEWS

U.S. STUDIES RUSSIAN LAUNCH PAD TECHNOLOGY

ARLINGTON, VA The Russian design bureau that developed highly automated launch pads for Zenith and Tsyklon boosters is being sought by the U.S. to modernize America's aging space lift infrastructure. The Moscow-based Design Bureau of Transport Machinery (DBTM) is working with Martin Marietta in evaluating upgrades to the company's Atlas launch sites.

By JEFFREY M. LENOROVITZ

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HEADLINE NEWS

PRATT, USAF RESOLVE F119 TURBINE PROBLEM

NEW YORK Resolution of a persistent vibratory problem in the F-22 fighter's F119 powerplant has cleared the way for the propulsion program to transition out of its early diagnostic phase and into product development. The vibratory problem—caused by shockwaves reflected onto high pressure turbine blades from stationary, low pressure turbine vanes—will be fixed in production engines by substituting a recontoured vane and increasing the number of vanes.

By STANLEY W. KANDEBO

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HEADLINE NEWS

TRW, TELEGLOBE PROPOSE ODYSSEY SATCOM SYSTEM

LOS ANGELES TRW and the Canadian telecommunications company Teleglobe are planning a partnership that will put TRW's Odyssey personal communications system in operation by the end of 1998. Odyssey is to have a 12-satellite constellation in medium-altitude orbits, compared to the 48 and 66-satellite low Earth orbit constellations of its competitors, Loral's Globalstar and Motorola's Iridium respectively (AW&ST Apr. 4, p. 57).

By MICHAEL A. DORNHEIM

100101
HEADLINE NEWS

U.S., RUSSIAN NEGOTIATORS HIT SNAG OVER 'SPACE TUG'

WASHINGTON U.S. and Russian government and industry officials are hitting snags in negotiations aimed at merging human space flight activities, including a major one over the cornerstone of the international space station—the Salyut FGB "space tug."

By JAMES R. ASKER,JEFFREY M. LENOROVITZ

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HEADLINE NEWS

IPTN MUST STILL BUILD PRODUCTION-SIZE N250

102103
HEADLINE NEWS

ROCKWELL COMPLETES MIR DOCKING DEVICE

By BRUCE A. SMITH

102103
HEADLINE NEWS

SPANISH GROUND ATTACK MISSILE DESIGN ADVANCES

By CRAIG COVAULT

November 141994 November 281994