AVIATION PING!..............
Thanks, montag813
Unable to get to the article. Something about signing up to look at it.
I no nothing of aviation or planes or jets.
I wonder when that jet that made it to Europe in one hour will be very commercially available.
I wouldn’t need any xanax for the trip :)
the new 757
The “not Boeing” way to success.
Paywall. NO thanks.
It’s an extended length and range A321 which was the playbook for the 737 MAX. All of the pretty pictures mean nothing since the airlines will implement the most packed seating arrangement possible. Pretty pictures aside this will probably be a miserable ride in coach for most airlines.
Now, if they could only do something about the pilot shortage...
The Airbus 320 series of aircraft, have been known for many years to have a particularly irritating high pitched whine. This is caused by air rushing across the under-surface of the wing, where there are Fuel Over Pressure Protector (FOPP) cavities. This generates noise, in the same way as blowing air over the mouth of a bottle. Every A320 series aircraft emits a signature howling noise while approaching to land. It is heard most when the plane is travelling at around 160 knots, and the frequency is around 500-600Hz, which is close to peak sensitivity of the human ear.It's astonishing that Airbus hasn't figured out how to make a port to dump excess fuel without that howling / screeching noise.Airlines can retrofit a vortex generator to solve the problem, but many do not do that (why spend money to stop aggravating people on the flight path?).
The vortex generator is a 5-cm triangular piece of aluminium sheet metal upstream of the two vents on each wing, that diverts the air flow and stops the whistle. A decade of research went into the vortex generator, which stems from efforts to mask a similar whistle produced when air blows over the gun ports of warplanes. The image below shows both the FOPP hole, and the VG that softens the sound:
I’m afraid that Airbus has replaced Boeing as the airliner of choice.
