Aces High Bulletin Board
General Forums => Aces High General Discussion => Topic started by: LePaul on February 20, 2001, 11:08:00 AM
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Ok, now that I have you attention...check out this picture a friend sent me. I can't wait until we can do this to our CVs!
(http://www.checksix.net/sonic.jpg)
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Paul J. Busiere
http://bd5.checksix.net (http://bd5.checksix.net)
BD-5 "T" (TurboProp) 90% complete, first flight in 2001 (We hope!)
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LOL !
I believe this is a painting, not a picture, of an F18 breaking the sound barrier or something simillar (http://bbs.hitechcreations.com/smf/Smileys/default/smile.gif)
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Saw, its a picture, I have it and a F4 Phantom doing the same thing.
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The pilot burst also shows sound barrier breaking? or is it nastier? (http://bbs.hitechcreations.com/smf/Smileys/default/wink.gif)
Cheers,
Pepe
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What came fist, the hornet or the egg?
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Somewhere in net is avi- or mpeg video where F-14 is doing same thing (http://bbs.hitechcreations.com/smf/Smileys/default/smile.gif)
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Here's the text that came with the picture:
" Through the viewfinder of his camera, Ensign John Gay could see the fighter plane drop from the sky heading toward the port side of the aircraft carrier Constellation. At 1,000 feet, the pilot drops the F/A-18C Hornet to increase his speed to 750 mph, vapor flickering off the curved surfaces
of the plane. In the precise moment a cloud in the shape of a farm-fresh egg forms around the Hornet 200 yards from the carrier, its engines rippling the Pacific Ocean just 75 feet below, Gay hears an explosion and snaps his camera shutter once.
“I clicked the same time I heard the boom, and I knew I had it”,Gay said.
What he had was a technically meticulous depiction of the sound barrier being broken July 7, 1999, somewhere on the Pacific between Hawaii and Japan. Sports Illustrated, Brills Content, and Life ran the photo. The photo recently took first prize in the science and technology division in the World Press Photo 2000 contest, which drew more than 42,000 entries worldwide.
“All of a sudden, in the last few days, I’ve been getting calls from everywhere about it again. It’s kind of neat,” he said, in a telephone interview from his station in Virginia Beach, VA. A naval veteran of 12
years, Gay, 38, manages a crew of eight assigned to take intelligence
photographs from the high-tech belly of an F-14 Tomcat, the fastest fighter in the U.S. Navy. In July, Gay had been part of a Joint Task Force Exercise as the Constellation made its way to Japan.
Gay selected his Nikon 90 S, one of the five 35 mm cameras he owns. He set his 80-300 mm zoom lens on 300 mm, set his shutter speed at 1/1000 of a second with an aperture setting of F5.6. “I put it on full manual,
focus and exposure,” Gay said. “I tell young photographers who are into automatic everything, you aren’t going to get that shot on auto. The plane is too fast. The camera can’t keep up.”
At sea level a plane must exceed 741 mph to break the sound barrier, or the speed at which sound travels. The change in pressure as the plane outruns all of the pressure and sound waves in front of it is heard on the
ground as an explosion or sonic boom. The pressure change condenses the water in the air as the jet passes these waves. Altitude, wind speed, humidity, the shape and trajectory of the plane - all of these affect the breaking of this barrier. The slightest drag or atmospheric pull on the
plane shatters the vapor oval like fireworks as the plane passes through, he said everything on July 7 was perfect. “You see this vapor flicker around the plane that
gets bigger and bigger. You get this loud boom, and it’s instantaneous. The vapor cloud is there, and then it’s not there."
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Paul J. Busiere
http://bd5.checksix.net (http://bd5.checksix.net)
BD-5 "T" (TurboProp) 90% complete, first flight in 2001 (We hope!)
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Originally posted by Pepino:
The pilot burst also shows sound barrier breaking? or is it nastier? (http://bbs.hitechcreations.com/smf/Smileys/default/wink.gif)
Cheers,
Pepe
Just a local shockwave Pepe.
Very cool photo.
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Link to F-14 video is in this site http://birch.family.tripod.com/landen_planes.html (http://birch.family.tripod.com/landen_planes.html)
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Nice Phantom pic
(http://www.theaviationzone.com/images/other/phantom/bin-1/F-4J_Phantom_IIa.jpg)
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That's a cool one Staga! Great picture of what I've been trying to get across about the transsonic region and local shock waves.
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Pics of Blue Angels doing the same thing can be found here
http://www.airshowaction.com/flw98/flw98.html (http://www.airshowaction.com/flw98/flw98.html)
plus much much more
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Thx Elk. I found a picture of the B-17 I rode in a few years ago. I'm pretty sure that's the "909". Boy that was fun.
http://www.airshowaction.com/warbirds/warbird_21.jpg (http://www.airshowaction.com/warbirds/warbird_21.jpg)