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To
confront this challenge, Flight Environments has taken an
in-depth approach which involves comprehensive acoustic data
collection, analysis, and specific dispositions for each different
area of each aircraft. Our data collection methods utilize
flat-response acoustic microphones that record broad-band
(25-10,000Hz) sound levels to calibrated digital audio tape.
The time-dependent waveforms are then processed via the Fast
Fourier transform into by-frequency, and octave-band spectra,
which allow us to determine not only the noise level at any
specific location in the aircraft, but also its particular
behavior.
Aircraft
noise may be caused by many sources, including structural
and interior vibration, exterior sources, and interior propagation.
Each noise source requires special, unique consideration. Consequently,
the knowledge gained by careful and accurate analysis can
be used very effectively to eliminate a wide variety of noise
throughout the aircraft. Using proprietary materials specially
optimized for maximal performance and minimal mass, Flight
Environments is typically able to provide superior noise reduction
for a fraction of the weight of other installations.
High
Technology Made Simple
It's been the company's long standing belief that the best
solutions are the simplest ones. While theoretically it's
possible to get broad-range noise cancellation from an expensive,
heavy, maintenance-intensive active system, these systems
are substantially more expensive than Flight Environments
products and just can't match our results. It's well known
that mid-to-high frequency acoustic signatures are far too
complex to cancel even with the best of today's active equipment.
Our system is most efficient and effective in this most audible
of frequency ranges.
Ergonomic,
User-Friendly Design
In areas where structures, cable harnesses, or other obstructions
pass through bays, parts are designed to fit around them minimizing
installation time and blanket modification while enhancing
maintenance access. The blankets are excellent thermal insulators,
far surpassing typical aircraft insulation, are flame-retardant
(passing Part 25 regulations for flammability and toxicity),
and don't retain moisture. Additionally, they're encapsulated
in a tough, waterproof cover fabric that is easy to handle
and prevents dust and allergen buildup. This system is accompanied
by a comprehensive cabin floor treatment that doubles as a
carpet pad, blocking noise while providing extra insulation
and comfort for your feet.
The
Benefits of Cabin Isolation
Flight Environments takes cabin insulation one step further
by completely isolating the entire airframe from the cabin
interior, in turn keeping your cabin temperature stable even
in excessively hot or cold environments. To illustrate the
benefits of their system, here is a typical flight scenario:
While
waiting for clearance on the ramp in the summer, your aircraft
begins to heat up, and the air-conditioning is having trouble
cooling it down. Or, perhaps, you're flying at FL 250 and
the cabin's uncomfortably cold and the heater can't keep the
cabin warm.
No
problem.
Our patented* Frame Barrier System installs over the
airframe covering everything but the windows. The blanket
eliminates hot-and cold-spotting, blocks exterior radiant
heat, and maintains interior temperatures even in the harshest
of environments. The blanket has been tested exhaustively
while flying at 41,000 feet at -74°F for eight hours with
superb results, performing equally well on a hot ramp in the
middle of summer (115°F) with no compromises in comfort.
*Patent
pending
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