July 1, 1985

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AVIONICS

Soviet Automated Terminai Control Will Evaluate Conflict Detection

Leningrad—The new Soviet Start-2 automated terminal air traffic control system being readied for test here will evaluate use of a ground-based computer to detect potential conflicts and to generate evasive maneuver commands, which will be transmitted to the aircraft via a Mode-S secondary radar data link.

By Philip J. Klass10 min

SAFETY

T-39 Crash Investigation Cites Malfunction in Braking System

We have completed our investigation of the aircraft accident of Apr. 20 that caused the tragic deaths of Gen. Jerome F. O’Malley, commander of the Tactical Air Command; his wife, Diane; and three crewmembers, Lt. Col. Lester F. Newton, Capt. Harry L. Haugh, and Tech Sgt.

PARIS AIR SHOW

General Aviation Manufacturers Display Few New Aircraft at Paris

Paris—Business aircraft manufacturers displayed few new aircraft at the Paris air show this year, and some of those shown will not reach the market for several years, but most builders were cautiously optimistic in their outlook. A number felt the industry is turning up after a long, depressed period.

By David A. Brown7 min

PARIS AIR SHOW

Thomson Semiconductor Expanding Very High Speed Device Efforts

Paris—Thomson Semiconductor Div. of Thomson-CSF’s Components Branch plans to increase its sales of very high speed electronic devices for aerospace military applications by a factor of 10 by 1990 from $21 million a year to approximately $200 million.

By Jay C. Lowndes7 min

SPACE TECHNOLOGY

Orbiter Wheels Sink Into Lake Bed Runway During Mission Rollout

Edwards AFB, Calif.—Space shuttle orbiter Discovery completed its seven-day Mission 51-G here last week with a landing rollout that left the orbiter’s left main wheels mired in lake bed runway ruts several inches deep. The brakes functioned properly during the landing and rollout, according to National Aeronautics and Space Administration officials.

By Keith F. Mordoff6 min

AERONAUTICAL ENGINEERING

Allison Develops Three Derivatives Of250-Series Gas Turbine Engine

Indianapolis, Ind.—Allison Gas Turbine Div. of General Motors Corp. has developed three new derivatives of its 250 series of engines, the turboshaft 250-C34 and 250-C20R and the turboprop 250-B17F. All three offer increased shaft horsepower and are interchangeable with their respective predecessors.

By Stanley W. Kandebo6 min

June 241985

July 81985

July 1, 1985

July 1, 1985

Manufacturers Face Challenges In Propfan-Airframe Integration

By Michael Feazel11 min