Bell Helicopter signed a memorandum of understanding with Van Horn Aviation to develop a composite tail rotor blade for the Bell 212 and Bell 412. Under the agreement, Van Horn will design, certify and manufacture the rotor blades, with Bell Helicopter Engineering participating in the design and certification processes. When certified, the blades will be distributed under Bell Helicopter’s Aeronautical Accessories brand.
BLR Aerospace (Booth No. N3724) is marking the delivery of its 600th FastFin tail rotor enhancement and stability system for medium models of Bell helicopters including the 212, UH-1H, UH-1N, Huey II and 412.
The Coanda effect, which is central to the performance of the MD Helicopters Notar (no tail rotor) and the tail-boom strakes on many other helicopters, inspired 16-year-old Ethan Chu’s design for a helicopter that won him the Igor Sikorsky Youth Innovator Award in the second annual Helicopter 2050 Challenge (http://www.helicopter2050.com).
“I was fascinated with the Coanda effect,” Chu said, “and I decided to use it to make my helicopter design more efficient.”
Following recent crashes of EMS helicopters in Illinois and Iowa in December last year and this January, the FAA issued a revised Special Airworthiness Information Bulletin covering recommendations for rotorcraft flying into snowy or icy conditions.
Van Horn Aviation (VHA) of Tempe, Ariz., wants to put more life into legacy helicopters by developing products that increase performance and lower direct operating costs by focusing on composite main and tail-rotor blades. At Heli-Expo’13, VHA is showing five examples of its work, all with different stories: tail-rotor blades for the Bell 206, UH-1 and 212/214; and main rotor blades for the MD Helicopters MD530F and Bell 206B.
The EASA has approved Eurocopter’s fix for the tail-rotor problems that have affected the AS350B3e AStar/Ecureuil light single helicopter. Operators will have to perform the modification–essentially removing an additional chin weight and installing a load compensator–within five months, per a recently issued AD. It will “restore the tail rotor dynamic load level,” down to the level found on previous models, such as the B3.
Several helicopter EMS accidents occurred over the last couple of months in the U.S.
Preliminary Report: Brazilian Jet Overruns Runway
Cessna Citation CJ3, São Paulo (SBSP), Brazil, Nov. 11, 2012–The captain of a Cessna Citation CJ3 was seriously injured as the aircraft ran off the end of 4,700-foot-long Runway 35R at São Paulo Congonhas Airport. The first officer and lone passenger sustained only minor injuries. Witnesses said the aircraft bounced high into the air a number of times before coming to rest against an airport fence, reportedly after the brakes failed. There was no post-crash fire.
Eurocopter’s ubiquitous light single, the AS350B3e Ecureuil/AStar, is subject to airspeed limits and repetitive inspections as a result of an early-October emergency service bulletin and accompanying airworthiness directive (AD). The helicopter is now limited to 100 knots airspeed at sea level to reduce dynamic loads on the tail rotor. In addition, repetitive inspections must be conducted, with maximum intervals of three flight hours, on the laminated half-bearings.
Operations of the latest version of Eurocopter’s ubiquitous light single, the AS350B3e Ecureuil/AStar, have been affected by an emergency service bulletin and accompanying emergency airworthiness directive (AD).
Under the restrictions, the helicopter’s true airspeed is limited to 100 knots to reduce dynamic loads on the tail rotor. In addition, repetitive inspections must be conducted, with maximum intervals of three flight hours, on the laminated half-bearings.