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Jet Noise

PRB

Administrator
Staff member
I like WW-II planes. But...

Working on a naval air station, you sort of get an air show every day. The planes always approach the air field in that uniquely military procedure called the “break turn”, where two or more jets fly up the runway heading in formation, at high speed, then “break off” at two or three second intervals, making 180 degrees turn to down-wind, thereby separating themselves sufficiently to land one-by-one at a safe interval. The delightful part of this display, from the ground, is the amazing range of auditory sensory immersion that takes place. As they approach the field at high speed, the sound you hear, influenced both by the Doppler effect, and that the exhaust is pointing away from you, is a high pitched whine from the engines themselves. If you're standing at the right spot, on a line perpendicular to the circle described by the subsequent break turn, about half way through the circle, you get to experience a pitch descending, multi-phased, deep whistle that I can best describe by saying “eeeewwwwhhh”, you know, like the ladies say when they see a bug get squashed. Go ahead, say it, it's ok, “eeeewwwwhhhh”... That's what it sounds like! But it doesn't just stop there. It transitions, as the plane begins to point away from you, to a low pitched, thunderously “base-heavy” component that literally shakes the ground, and you, from inside your chest. Damn that's good stuff!

Oh, the planes? EA-6Bs and EA-18Gs at NAS Whidbey Island, WA.
 
Indeed you are lucky. At best I can get under the planes when they are on final (F-15, F-22).

Of course some get tired of the noise. My in-laws live on the other side of Whidbey Island a little off the approach. When my father-in-law was still active Navy, he used to call the tower to complain if the pilots were a little off center line thereby disturbing his sleep. One of his first assignments was in a back seat of an EA-6B.
 
In 1979-80 we lived in the mobile home park at NAS (now MCAS) Miramar near San Diego. Field Carrier Landing Practice (FCLP) was done right at Miramar (no rural outlying field in the SD area) so when squadrons started working up for Carrier Quals it got pretty noisy, especially at night. You get used to it. :)
 
I've noticed that too. There were times that you could barely hear B-1s, and other times that the noise felt like an assault based on different atmospheric conditions.
 
I lived on NAS Pensacola in 84-85 and was under the approach path for Sherman Field. I got used to it pretty easy.
 
Two noises are positively orgasmic; noisy jets with reheat and distorted heavy metal guitars at a very loud concert or festival.

Aural bliss.
 
you get to experience a pitch descending, multi-phased, deep whistle that I can best describe by saying “eeeewwwwhhh”, you know, like the ladies say when they see a bug get squashed. Go ahead, say it, it's ok, “eeeewwwwhhhh”...

:icon_lol::icon_lol:

Same volume too....


My favourite part of any airshow is when an F-16 (Or any similar jet) turns away from the croud at full afterburner. You can see the heat, feel the rumble, even the air seems to move from the violent noise.
 
Your post somehow reminded me of the F-104.

[YOUTUBE]u6K4iSxET6g[/YOUTUBE]

Dang, this is better than porn. xP
 
Two noises are positively orgasmic; noisy jets with reheat and distorted heavy metal guitars at a very loud concert or festival.

Aural bliss.


well, i don't know if i would have used that word in particular, but they are 2 mighty cool sounds for sure :icon_lol:
 
Bjoern... F-104 does indeed make a great noise as it passes, and when it gets to about 80% throttle, another sound i'll never tire of.... the F-4 Phantom, living under the Approach for Larissa AB as a kid it was sheer heaven for me... F-104's, F-4's, F-16's, A-7's... all make a great noise, and it gets to the point you don't have to go outside to recognise it :jump:
 
It's not merely the jets!

How about the full throaty roar of twin 285hp Continentals on a certain Cessna 310R!

Click and enjoy!

http://www.kenstallings.com/downloads/C310R_High_Speed_Flyby.mp3

In case you are curious, I was standing adjacent the runway at Portales, while my friend was flying the airplane. The high speed full power pass was his idea, and since we were recording a whole slew of sounds for a reason I shall not mention at this time, who was I to disagree! :engel016:

Cheers,

Ken
 
While I was at Dyess, I had a friend that lived in a mobile home just off the north end of the runway. One day when I was visiting, a B-1 flew over and everything that wasn't nailed down shook, vibrated, moved, whatever. We even had to quit talking for a couple of seconds. But here's the kicker - that plane was on short final to land! Imagine what it would have been like if it was taking off north-bound!!!
 
Two noises are positively orgasmic; noisy jets with reheat and distorted heavy metal guitars at a very loud concert or festival.

Aural bliss.

I would have picked a couple other noises ... but hey this is a family friendly forum ;)
 
I like WW-II planes. But...

Working on a naval air station, you sort of get an air show every day. The planes always approach the air field in that uniquely military procedure called the “break turn”, where two or more jets fly up the runway heading in formation, at high speed, then “break off” at two or three second intervals, making 180 degrees turn to down-wind, thereby separating themselves sufficiently to land one-by-one at a safe interval. The delightful part of this display, from the ground, is the amazing range of auditory sensory immersion that takes place. As they approach the field at high speed, the sound you hear, influenced both by the Doppler effect, and that the exhaust is pointing away from you, is a high pitched whine from the engines themselves. If you're standing at the right spot, on a line perpendicular to the circle described by the subsequent break turn, about half way through the circle, you get to experience a pitch descending, multi-phased, deep whistle that I can best describe by saying “eeeewwwwhhh”, you know, like the ladies say when they see a bug get squashed. Go ahead, say it, it's ok, “eeeewwwwhhhh”... That's what it sounds like! But it doesn't just stop there. It transitions, as the plane begins to point away from you, to a low pitched, thunderously “base-heavy” component that literally shakes the ground, and you, from inside your chest. Damn that's good stuff!

Oh, the planes? EA-6Bs and EA-18Gs at NAS Whidbey Island, WA.

Since we ARE a flying site, I will be persnickety and make some minor corrections you your terminology and numbers. :d

The term used is "Break" (in pilot training it was called "Pitch"?) It is the fastest way to get multiple aircraft on the ground. It is flown at 300 kts (F-4, F-15, F-16, F-18, etc., slower aircraft will fly at a different airspeed) and 1000 ft AGL. Lead makes the bread at the mid point and each each aircraft in the formation counts for four seconds and breaks after the aircraft in front. A 2G level turn is made with throttles in idle or close to idle.

As you roll out on the 180, you should be between 200-250 kts. You lower the gear and/or flaps, establish proper AOA or airspeed for weight. At a 45 degree (four or seven o'clock) position to touchdown you roll into a 30-45 degree bank and start the final turn. Bank increase or decrease is used to roll out in front of the runway at about 300 feet AGL.

From there it is easy. If you are Navy or Marines, you do nothing more but let it slam onto the runway. If you are USAF you take pity on the airplane and flare slightly just before touchdown. Keep the nose up until 80-100 kts and the nose wheel will then come down on its own.

C'est tout!
 
Well Ken, you have to admit that bringing up a twin piston engine Cessna in a discussion about jet noise is like bringing a knife to a gun fight. :d
 
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