Sound

March 19, 2008 - 5:38am

Broadband cabin noise, which can greatly fatigue passengers in even the most finely appointed business aircraft, could be a thing of the past if a new system from Britain’s Ultra Electronics and Qinetiq makes it to market. Early next year the partners are expecting to flight test new-generation hybrid active/passive mounts positioned between the fuselage and cabin trim panels.

March 7, 2008 - 4:41am

The prospect of designing a supersonic business jet that meets market requirements and environmental noise constraints at a price that will attract buyers remains compelling, and research continues. The Department of Aerospace Engineering at the University of Illinois at Urbana-Champaign recently signed an agreement to research SSBJ sonic boom mitigation with Rolls-Royce Deutschland and Gulfstream Aerospace.

February 8, 2008 - 10:14am

Cabin entertainment provider Rosen Aviation and cabin completion and refurbishment specialist Elliott Aviation have joined forces to create a noise-canceling solution combined with an in-flight entertainment system for the King Air 200, 300 and 350. Elliott’s sound management system incorporates UltraQuiet active noise control.

February 8, 2008 - 10:14am

Cabin entertainment provider Rosen Aviation and cabin completion and refurbishment specialist Elliott Aviation have joined forces to create a noise-canceling solution combined with an in-flight entertainment system for the King Air 200, 300 and 350. Elliott’s sound management system incorporates UltraQuiet active noise control.

January 8, 2008 - 10:51am

Noise is everywhere–annoying, tiring and sometimes painful. Since the early days of aviation, when a roaring, clattering engine sat on a wooden frame close to the pilot, and the wind whistled through the wire bracing like a banshee chorus, engineers have sought to make the process of manned flight less noisy. And they have succeeded, to a degree.

December 27, 2007 - 7:01am

Aerion now has commitments covering at least 20 of its proposed supersonic business jet (SSBJ) since it started signing letters of intent with prospective customers in November. The letters of intent come from 20 different clients in Europe, the Middle East, Asia and North America; operators committing to the program most recently include Pakistan-based executive charter firm Princely Jets and an undisclosed customer from India.

November 27, 2007 - 9:51am

U.S. and European Union officials are making last-ditch efforts to negotiate a settlement to their long-running dispute over hush kits bringing Stage 2 aircraft into compliance with current Stage 3 noise limits. Both sides want the deeply divisive matter resolved at the September 25 meeting in Montreal of the International Civil Aviation Organization assembly.

November 7, 2007 - 10:30am

The European Union’s research program on noise reduction, Silence(r), officially ended in June with promising results. It explored all noise sources, from engines to landing gear and flaps. However, although it achieved a reduction of five decibels in aircraft noise, several more leads need to be developed to reach the ambitious target of cutting a full 10 dB from average noise levels by 2020.

November 2, 2007 - 10:26am

The FAA’s rules are a “barrier to the development and application of supersonic technologies in advanced general aviation aircraft,” said the General Aviation Manufacturers Association in comments submitted to an agency request for information on SST noise rules.

October 3, 2007 - 11:54am

After a flurry of interest late in the last decade that appeared to lose momentum in the wake of 9/11, there is evidence that progress toward defining a supersonic business jet continues quietly.

 
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