CREATING THE WORLD’S QUIETEST SUPER-MIDSIZE CABIN
Discover how the Citation Longitude aircraft helps you maximize the value of your flight department.
Often, aircraft are designed to be quiet mainly during long range cruise,” said Gonzalo Mendoza, Textron Aviation’s chief acoustics engineer. “The Longitude is very quiet there, but it's also quiet during climb, high speed flight and descent. It was made to be quiet from the the outset, not modified to be quieter after it was designed.
Step 1: Identify the noise source
Engineers identified all potential noise sources within various zones of the Longitude aircraft interior and exterior — from the cockpit and forward cabin, to the lavatory and the aft walk-in baggage compartment.
Step 2: Isolate the noise sources
Engineers measured, tracked and calculated noise levels from every seat of the Longitude aircraft using computer models validated by flight data. The process targeted and isolated specific noise-inducing areas like windows and the cabin door.
Step 3: Treat and sound-proof
After locating noise-producing locations within the interior and exterior of the aircraft, engineers used state-of-the-art treatment and dampening techniques and materials to sound proof the Longitude aircraft and its components.
Comparing cabin sound levels
Throughout the Longitude aircraft development program, the cabin acoustics team measured sound from other super-midsize and large-cabin business aircraft using the same process. And while certain materials can affect cabin sound levels — everything from glassware, woodwork and fabrics plays a role in cabin noise levels — all aircraft were tested in comparable conditions, Mendoza said.
With sound levels averaging 67 decibels, the Longitude aircraft cabin is among the quietest you'll find. The quiet interior also complements other comfort features of the aircraft, from extra legroom and fully flat-laying seats, to lighting and interior design.
The goal was to make the Longitude cabin feel like your office or a conference room, not just an aircraft...Sound plays a major role in in creating that type of environment.