Helicopter rotor

March 15, 2012 - 4:10pm

The EASA has issued an emergency Airworthiness Directive (AD) calling for inspections of all Eurocopter EC135s after a crack was discovered on the lower hub-shaft flange of a main rotor hub shaft on one of the light twin-engine helicopters. In issuing the emergency order, the agency wants to avoid crack propagation, which could cause hub failure.

February 12, 2012 - 8:40pm

Honeywell plans to provide the Zing Test Elite rotor track-and-balance maintenance technology to MD Helicopters to support all current and new MD500 series helicopters. Based on the Zing HUMS 1134 on-board system, Zing Test Elite is a carry-on system that quickly provides the ability to perform helicopter rotor smoothing, engine refining performance checks, component balancing, and vibration surveys to save time, fuel and maintenance costs.

February 12, 2012 - 3:20pm

The X3 compound helicopter demonstrator is set to resume flights this month. Data analysis from the first two flight-test campaigns has prompted new questions, chief technology officer Jean-Michel Billig told AIN, and the launch of a third test campaign has been scheduled. The testing will explore the behavior of the main rotor at high speed. Some other goals relate to the Fadec and the link between rotor rpm and aircraft speed. Billing said the first product using X3 technology may appear in 2020 or 2021.

February 12, 2012 - 3:15pm

Sikorsky Innovations has completed wind-tunnel testing of an active rotor system equipped with “high-authority” flaps, thus paving the way for improvements in noise, vibration–and, marginally, efficiency–on future rotorcraft. The program, which started in 2008, is part of a broader program that encompasses leading-edge rotor blade devices. The tested system involved trailing-edge flaps and a closed-loop control.

February 12, 2012 - 7:00am

Sikorsky Innovations has completed wind-tunnel testing of an active rotor system equipped with “high-authority” flaps, thus paving the way for improvements in noise, vibration–and, marginally, efficiency–on future rotorcraft.

February 12, 2012 - 6:45am
X3 compound helicopter

The X3 compound helicopter demonstrator is to resume flights this month. Data analysis from the first two flight-test campaigns has prompted new questions, chief technology officer Jean-Michel Billig told AIN, and the launch of a third test campaign has been scheduled. The testing will explore the behavior of the main rotor at high speed. Some other goals relate to the Fadec and the link between rotor rpm and aircraft speed.

February 11, 2012 - 7:49pm

Scott’s-Bell 47 (Booth No. 5309) will launch a Model 47 upgrade program here at Heli-Expo and is also developing composite replacement main rotor blades with IAC Ltd.

The upgrade gives customers the choice of having their existing Model 47 refurbished or purchasing a completed refurbished/upgraded 47G-2A (narrow body) or 47G-2A-1 directly from Scott’s.

The program covers all Lycoming-powered 47G helicopters. Included are new main rotor blades as well as a new instrument panel, new interior and Texas Helicopter STCs, such as No-Bar, Sprag, and Muffler.

February 10, 2012 - 7:15am

Sikorsky has selected GE Aviation (Booth No. 1217) to provide the GE YT706-GE-700R engines and engineering support for Sikorsky’s S-97 Raider program. The Raider is the military version of the experimental X2, a single-engine rotorcraft with coaxial counter-rotating main rotors and a pusher propeller. The Fadec-controlled GE engine offers 2,500 to 3,000 shp and is based on the GE700/CT7 family. GE said it developed the GE3000 for medium-lift applications and this engine could be incorporated into the Raider in the future.

February 2, 2012 - 3:15pm

Yesterday the FAA issued an Emergency Airworthiness Directive (2012-02-51) that mandates the immediate replacement of main rotor blades on 697 Bell 206L, L-1, L-3 and L-4 helicopters after 1,400 hours, as opposed to the current 3,600-hour time in service limit, due to concerns about fatigue cracking. Special flight permits are prohibited under this EAD, effectively grounding hundreds of helicopters.

January 24, 2012 - 3:35pm

Eurocopter announced today that its 2011 revenues reached a record €5.4 billion ($7 billion), a 12-percent increase over the previous year. However, deliveries totaled 503 helicopters, short of the 527 handed over in 2010.

Last year, the manufacturer received net orders for 457 rotorcraft, prompting CEO Lutz Bertling to declare that the helicopter market has now recovered. He emphasized the low number of cancellations last year–only 15.

 
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