Gulfstream Whisper

Gulfstream may be closer to launching a quiet supersonic business jet. They filed for a patent on the name Gulfstream Whisper, most recently in 2007. It's designed for quiet supersonic flight, using an extendable nose spike.

No one will try to launch an aircraft until the FAA changes the rules on sonic booms over land. They are currently looking at how loud is too loud.

Published in the US Government's Patent and Trademark office's Official Gazette yesterday was an application from Gulfstream to the trademark name, Gulfstream Whisper.

What is it? According to the Gazette, it's an "aircraft featuring a design which reduces boom intensities during supersonic flight."

By formally applying for the trademark, the government says Gulfstream "has a bona fide intention to use or use through the applicant's related company or licensee the mark in commerce on or in connection with the identified goods and/or services"

Source

Does this particular supersonic jet have the necessary equipment needed to release, barium, silver iodide, or nanobots into the skies to produce chemtrails



How do they make a supersonic jet quiet anyways?

reply to post by OzWeatherman


You have to smooth out the airflow as you go supersonic. They have to control the supersonic airflow so that you don't get the huge boom that you normally get.

When a plane goes supersonic, the pressure waves slam together, creating the boom. The key is to spread the waves out and keep them from colliding.

Originally posted by OzWeatherman
Does this particular supersonic jet have the necessary equipment needed to release, barium, silver iodide, or nanobots into the skies to produce chemtrails

Yay

How do they make a supersonic jet quiet anyways?

Same way they reduce the wake or drag from a speedboat or a submarine - they are both effects of fluid dynamics, just the density of the fluid is different.

So looking at this image...

[atsimg]http://files.abovetopsecret.com/images/member/83838897f032.jpg[/atsimg]

I'm assuming the extendable nose is a major part of the way it passes through the sound barrier quietly (or quiter).

I'm thinking they precicesly push if foward through the transsonic - thus seperating the 2 sockwaves by several feet...

Edit:

Gulfstream’s patented spike for controlling and reducing sonic boom transforms the traditional N-wave sonic boom into a smooth and more rounded pressure wave shaped roughly like a sine wave or a sideways “S.” This change in the wave shape results in a softer sound that is quieter than the Concorde sonic boom by a factor of 10,000. In most situations, the Gulfstream Whisper would be imperceptible, masked by ambient noises.

Okay - still not really getting it though - I can see the N wave in my minds eye as the two waves really resisting the aircraft... And the sine wave is smoother but how does a spike get that result???

[edit on 14/4/2009 by Now_Then]