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THIS IS WHAT IT LOOKS LIKE WHEN THE SOUND BARRIER BREAKS ON YOUR HEAD!!
BOB LEES' CAMERA ^
| 2-14-04
| GONZO
Posted on 02/14/2004 3:05:54 PM PST by gonzo
On June 4th, 1989, at an Air Show in London, Ontario, Canada, an RF-4-C Phantom of the Mississippi Air National Guard, accidentally cracked Mach-1, while doing the Show opening.
As luck would have it, we were standing underneath it at the time. The photo was snapped by my brother as he was being blown off his feet:
Cool, huh?...
TOPICS: Canada; Miscellaneous
KEYWORDS: airplanes; aviation; f4phantom; fighters; mach1; sonicboom; soundbarrier; turass
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To: VOA
I think it's dust jarred loose by the shock wave.
Let's see what PE says...
61
posted on
02/14/2004 7:39:26 PM PST
by
null and void
(Yes on SB 1160 = No on your re-election)
To: gonzo
That's the one. ThrustSSC is the car.
62
posted on
02/14/2004 7:49:18 PM PST
by
Professional Engineer
(Spirit & Opportunity~The race is ON! Which will find the first Martian trout stream.)
To: VOA
IIRC the shock wave was back lit by the setting sun. The apparent change in color is probably due to the slight change in angle in the airflow on each side of the wave itself. It would refract light just slightly differently.
63
posted on
02/14/2004 7:54:20 PM PST
by
Professional Engineer
(Spirit & Opportunity~The race is ON! Which will find the first Martian trout stream.)
To: Professional Engineer
The shockwaves above the car -- photographic illusion?
64
posted on
02/14/2004 8:07:20 PM PST
by
Eagle9
To: bonfire; aBootes; sistergoldenhair
"...Hurry up..."I am, but I had to stop for...
...roses. Smootches and.................FRegards
65
posted on
02/14/2004 8:10:50 PM PST
by
gonzo
(Re-Hab is for quitters! I'm still tryin' to see how much I can get away with.........)
To: Eagle9
The shockwaves above the car -- photographic illusion?Those appear to be the real deal to me. Cool picture.
66
posted on
02/14/2004 8:21:25 PM PST
by
Professional Engineer
(Spirit & Opportunity~The race is ON! Which will find the first Martian trout stream.)
To: BykrBayb
Whoops! Can't forget any Baybs.........
Smootches................FRegards
67
posted on
02/14/2004 8:24:06 PM PST
by
gonzo
(Re-Hab is for quitters! I'm still tryin' to see how much I can get away with.........)
To: Professional Engineer
68
posted on
02/14/2004 8:26:39 PM PST
by
Eagle9
To: gonzo
Oh, they're beautiful! Thank you!
69
posted on
02/14/2004 8:51:08 PM PST
by
BykrBayb
(Temporary tagline. Applied to State of New Jersey for permanent tagline (12/24/03).)
To: gonzo
gonzo ,
I sent the photos on this thread to a California research scientist , "friend". He sent me back this reply.
Please understand I do not doubt you, but , Mickey has been involved with the aircraft industry since the 40's!
He perfected the airfoil of the USAF Stealth for Northrop!
Shock waves begin to form on the best designed airplane at M = .80. That's what limits the cruise speed of jet transports. The drag goes up when shock waves form and the fuel costs become prohibitive. When the sun is right you can often see shadows of these shocks on the wing of a 707 or DC-8 flying at M = .80.
Those pictures of planes supposedly going supersonic need some explanation. It looks to me that at the instant of the picture the planes are going about M =.90? If it were going supersonic the condensation would not begin ahead of the shock since the air won't even know it's coming. (Notice if you can, that the condensation terminates at the local shock).
On my first day of work in 1947, at the NACA, Langley High Speed wind tunnel, I was assigned the job of reading the angle of the model at each test point by looking through a window with an inclinometer. Wow, I could see shock waves with my naked eye! I have been looking at them and calculating their properties ever since. There are a lot of misconceptions about shock waves even among top scientists.
If you want to understand shock waves or anything else, you better understand God's well proven laws of math and physics.
Shema Yisroel
Adenoi Elehanu
Adenoi Echod
Mickey,
70
posted on
02/15/2004 5:52:11 AM PST
by
Jack Armstrong
(a Post Modern America adrift in the Dark)
To: gonzo
gonzo ,
I sent the photos on this thread to a California research scientist , "friend". He sent me back this reply.
Please understand I do not doubt you, but , Mickey has been involved with the aircraft industry since the 40's!
He perfected the airfoil of the USAF Stealth for Northrop!
Shock waves begin to form on the best designed airplane at M = .80. That's what limits the cruise speed of jet transports. The drag goes up when shock waves form and the fuel costs become prohibitive. When the sun is right you can often see shadows of these shocks on the wing of a 707 or DC-8 flying at M = .80.
Those pictures of planes supposedly going supersonic need some explanation. It looks to me that at the instant of the picture the planes are going about M =.90? If it were going supersonic the condensation would not begin ahead of the shock since the air won't even know it's coming. (Notice if you can, that the condensation terminates at the local shock).
On my first day of work in 1947, at the NACA, Langley High Speed wind tunnel, I was assigned the job of reading the angle of the model at each test point by looking through a window with an inclinometer. Wow, I could see shock waves with my naked eye! I have been looking at them and calculating their properties ever since. There are a lot of misconceptions about shock waves even among top scientists.
If you want to understand shock waves or anything else, you better understand God's well proven laws of math and physics.
Shema Yisroel
Adenoi Elehanu
Adenoi Echod
Mickey,
71
posted on
02/15/2004 5:57:02 AM PST
by
Jack Armstrong
(a Post Modern America adrift in the Dark)
To: in the Arena; Squantos
Hey, someone snapped Eaker trying to E&E the Apaches across West Texas... I lost that sucker too!!!
My son and I were at an air-show a few years ago and right in front of us a jet (can't remember which) nudged M.9 we were told later. It "flared" about 10 times. It was at the end of the day so both of us were out of batteries (damn it), but the memory remains clear.
It was so damn cool.
Thank goodness for the pilot that there was no boom!!!
72
posted on
02/15/2004 10:49:55 AM PST
by
Eaker
("Do I feel your pain?? Hell, I caused your pain!!!!" - Tom Eaker, 2004)
To: gonzo
your post #13:
What a cute card, gonzo. Thank you. I've been away a few days and it's a lovely surprise to get the card upon my return.
You're a great Valentine, gonzo. God Bless you and yours.
73
posted on
02/18/2004 6:56:55 PM PST
by
spald
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