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Aviation History
1989
1989 - 2236.PDF
We turned this simple principle into technology worthy of the new MD-11. There are good reasons our 3-inch atti tude indicator is baselined on the MD-11 - about 35,000 reasons. That's how many case- contained 2-inch gyros J.E.T supplied to aviation in the past 20 years. Now that same depend ability has been engineered into our new 3-inch units, available in numer ous models including one with electrical erect. Each has a familiar attitude display that complements any cockpit panel. J.E.T. attitude indicators have established a worldwide reputation for reliability. Still, it's reassuring to know that we maintain a network of factory-authorized service centers around the world. Write, or call 616-949-6600, for technical data. Jet Electronics and Technology, Inc. A Subsidiary of The BFGoodrich Company 5353 52nd Street S.E. / Grand Rapids, Ml 49588 TELEX 22-6453 JETELECTEC GDR / In United Kingdom: (0) 734-775544 OPERATIONS: GENERAL Hot air lifts raft over Amazon rainforest Airship in acid rain study Thunder & Colt has produced the world's largest hot-air airship, to enable French bota nists to analyse the effects of acid rain on the Amazonian forests. The 261,000ft3 airship will lower a 28m-diameter raft on to the rainforest canopy so that scientists can perform in situ research in the uppermost foliage. The manufacturer says that the AS261, a scaled-up AS80Mk II, establishes several "firsts": the first airship built for purely scientific purposes, and the first to carry a 750kg underslung load. Gross lift capacity is 2,100kg, the car weighing 530kg and the canopy 375kg. Extra payload comprises a special loading plat form which weighs 740kg. Following the recent completion of tests, the AS261 is now on its way to Brazil as part of the French Heartopia group's Oper ation Radeau de Cimes (Raft of the Tree Tops), which is expected to last three months. The AS261 is 47-8m long and is made from Thunder & Colt's HTN90 long-life fabric. A Continental O-200 is used to power the airship and to main tain pressure. A triple Mk II propane burner provides lift. For transport, the craft can be broken down into four modules: crew section with burner, passenger area, fuel unit, and engine. The French scientists, who work at the Tropical Labora tory of MontpelTier, plan to inflate the airship on a river bank in the early morning before lift ing the platform into place. The platform which is carried by four cables, comprises inflated neoprene cylinders and Kevlar netting. The airship will fly above the forest until scientists select a suitable area, which is likely to be at least 25m above ground level. It will then descend to lower the platform on to the forest canopy, where the botanists will be able to climb out on to the netting before the airship flies away. • Helikopter Service strike ends Striking Helikopter Service aircrew accepted a minor modification to their disputed new pay and conditions package and returned to work on July 9. Industry sources report that the six-day action ended when agreement was reached on a one- hour reduction of their 12-hour maximum daily duty period. As a result, Helikopter Service has withdrawn precautionary 14-day notices issued to its 600 non-striking employees on July 4. Approval from the Norwegian civil aviation authority in Oslo and the country's pilot union had resulted in Bond & Bristow aircraft operating some 40-plus charter flights into the Norwe gian sector from Aberdeen and Sumburgh, and this programme was completed on July 10. • 10 i FLIGHT INTERNATIONAL 22 July 1989
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