Chris Brunt Engineering

The CBE approach




  A World Leader in Corporate Aircraft Interior Acoustics

The CBE philosophy considers an understanding of all relevant noise generating elements an essential part of the total approach to Aircraft Interior Noise Reduction.

The successful treatment of all of the following "areas of concern" is fundamental to achieving a low noise interior.

  • Skin, Interior Panel and Bulkhead damping.
  • Intercostal and other cavity energy damping and absorption.
  • Frame radiation reduction.
  • Interior Panel, Bulkhead and Cabinetry isolation.
  • Floor/carpet insulation.
  • ECS Noise reduction. (Achieving optimum air flow. Optimum placement of mufflers. Plenum and distribution box damping and insulation. Bleed-air-mix noise reduction. Air return treatments). Muffler selection and placement.
  • Panel integrity concerns. (Noise leaks caused by lighting fittings, ECS attachments and other acoustical breaches in the interior panel system).
  • Mechanical isolation and acoustical baffling of noisy components such as fans, pumps, power supplies and inverters.
  • Sink and shower drain noise reduction (specialized "wet" mufflers or shut-off valves).
  • Noisy Vent treatments.

  • Fuel Pump and Hydraulic Pump noise reduction strategies.
  • Effective skin damping techniques at antennas and other boundary layer protrusions and discontinuities.
  • Exterior fairing damping methods.
  • Optimum Engine balance and vibration isolation.
Our extensive experience shows the selection of the most appropriate materials and material combinations for the treatment of these concerns to be of prime importance in targeting the most weight-efficient and acoustically effective design - AND -  It is only through a scientific distribution of these materials that a truly efficient noise reduction system can be engineered.

We recommend an in-flight noise survey of the subject aircraft prior to the installation of any custom Cabin Noise Reduction System A careful analysis of the resultant noise profile and the experienced use of the analysis data provides for a highly optimized design specifically tailored to the subject aircraft and its unique problems.