LMB of Malemort, France, is showcasing a range of its high-performance/high-reliability electric fans, blowers and motors here at Heli-Expo (Booth No. C3504). LMB designs and manufactures both AC (50/60 Hz, 400 Hz and wild frequency) and DC (12-300 VDC) brushless motors used in fixed- and rotor-wing aircraft, as well as in ground military vehicles. The company offers more than 1,000 shelf-qualified products, while its engineering expertise capabilities enable it to quickly design and build these components to meet specific requirements that meet Mil STD 810/461 and RTCA DO-160 standards.
Lord Corp., perhaps best known to many as provider of Lord mounts for aircraft engines, is at Booth No. C11836 to showcase its wide range of products and services to improve aircraft reliability, maintainability and passenger comfort by controlling vibration, shock and noise. The company has developed a variety ways to meet the requirements of business aircraft, from traditional elastomeric products to electromechanical systems.
New Bose technology designed to dampen the road vibration translated into semi-truck cab seats could be applied to helicopters, according to at least one leading aircraft seating engineer.
Gulfstream IV, Sugar Land, Texas, Nov. 11, 2007–The collapse of the GIV’s nosegear on landing at Sugar Land Regional Airport was due to shimmy stemming from improper installation of the upper torque arm pin by the flight crew during preflight, said the NTSB. After the GIV nosewheel touched down, the pilot felt a “violent vibration or shaking.” He applied full back force and the vibration eased but came back as the airplane slowed.
Semia, a French manufacturer of maintenance equipment, was at Helitech 2008 exhibiting the Syntham 5000, a new engine vibration-check device that can monitor several channels simultaneously.
Gulfstream Aerospace GIV, Sugar Land, Texas, Nov. 11, 2007–When the GIV touched down at the Sugar Land Regional Airport, the nosegear collapsed, substantially damaging the jet. The pilot told investigators, “When the nosewheels touched down, a violent vibration or shaking was felt, full back force was applied to the control yoke and the vibration eased until the aircraft slowed further and the vibration returned.”
E-A-R Specialty Composites (Booth No. 331) has broken ground for a new 11,500-sq-ft acoustic test center designed to increase the Indianapolis company’s test and analysis capabilities.
Reducing vibration and noise is key to the goal of gaining public acceptance of the rotorcraft as a routine mode of transport. A Boeing team has now successfully made use of advanced materials to develop and test a new helicopter rotor that could go a long way toward unlocking the vehicle’s potential.
Ultra Electronics Controls (Stand A544) has been selected by Airbus to supply active noise and vibration control on the A400M military transport aircraft. The contract is valued at approximately $60 million, the UK-based company said here.
Sikorsky has introduced a software fix for its S-92 that it says will address a 4R vibration some pilots have experienced at high cruise speeds. The company has already retrofitted new active vibration control software to some of the fleet.