The FAA has issued a final rule on an airworthiness directive for the Eurocopter EC 120B. It requires modifying the pilot cyclic control friction device by replacing a specified thrust washer with two thrust washers.
The FAA has issued a Final Rule amendment superseding an existing airworthiness directive for specified Eurocopter AS350s and AS355s with certain tail-rotor pitch-control rods installed.
Sikorsky’s X2 technology demonstrator, a high-speed semi-compound helicopter, flew for the last time on July 14 at the company’s West Palm Beach, Fla. test center, in front of a number of the manufacturer’s military and commercial customers. The sortie took place without the central hub fairing (also known as an “aero sail”), which will not be tested in flight.
Sikorsky flew its X2 technology demonstrator for the last time at its West Palm Beach, Fla. test center last week in front of some of the company’s military and commercial customers. Contrary to previously announced plans, the semi-compound helicopter, which features two contra-rotating main rotors and a pusher propeller, flew without its central hub fairing.
Sikorsky Innovations has completed wind-tunnel testing of an active rotor system equipped with “high-authority” flaps, paving the way for what it says will be improvements in noise, vibration–and, marginally, efficiency–on future rotorcraft.
The EF5 tornado that struck Joplin, Mo., on May 22 packed 200-mph winds and tore a three-quarter-mile-wide, 14-mile-long path of destruction that killed 154 and leveled 8,000 structures. The storm took dead aim at Joplin’s St. John’s Regional Medical Center, rendering the building unusable and forcing a post-storm evacuation of 183 patients. Five others suffocated when back-up power failed and their ventilators shut down.
One of the biggest dangers facing helicopter crews around the world, and in current operational theaters in particular, is “brownout.” Rotor downwash can create clouds of sand and dust that obscure the pilot’s view at critical times, especially when landing. Snow and fog also bring their own low-visibility dangers.
Rostvertol is at the show promoting its Mi-26T2, an upgraded version of its popular heavy-lift helicopter, in the hope of securing sales to India and other potential customers. The company is appearing at the Paris Air Show for the first time since becoming part of the Russian Helicopters (Chalet B37).
Eurocopter has delivered what it hopes will prove to be the X-Factor to this year’s Paris Air Show. The daily flying display this week features its new its X3 (“x cubed”) compound helicopter demonstrator, a modified AS 365 Dauphin with a conventional main rotor, two propellers on wingstubs and a conventional empennage.
The Eurocopter X3 (“X cube”) compound helicopter demonstrator is to appear for the first time in public next week at the Paris Air Show. Jean-Michel Billig, the company’s executive v-p for research and development, promised late last month that F-ZXXX will impress showgoers with its maneuverability, just like the military Tiger wowed them in the 1990s when it began performing loops.