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Killer Shots

WannaGoFast said:
p.s. the pics of the Blues at 700kts 20' off the water in SF are some of the most incredible shots I've ever seen...
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This has been discussed ad naseum, but I'm pretty sure that he wasn't at 700 kts, because he would have exceeded the speed of sound. I was surprised with the write up, because he said "transsonic" and actually did research. He said 700 mph, which is less than the speed of sound.
 
I have to say, I have been an avid jet and air show addict since about the age of 10. Knowing that, those are some of the best pics I have ever seen. I will be browsing those again and again for the weeks to come. Keep up the good work!
 
phrogpilot73 said:
This has been discussed ad naseum, but I'm pretty sure that he wasn't at 700 kts, because he would have exceeded the speed of sound. I was surprised with the write up, because he said "transsonic" and actually did research. He said 700 mph, which is less than the speed of sound.
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sorry, i mistyped.. i meant 700mph.

anyway... just thought you'd enjoy the pics
 
phrogpilot73 said:
This has been discussed ad naseum, but I'm pretty sure that he wasn't at 700 kts, because he would have exceeded the speed of sound. I was surprised with the write up, because he said "transsonic" and actually did research. He said 700 mph, which is less than the speed of sound.
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True, although I'm not so sure about his quote "forget about oblique shock wave theory".....I'm really straining my brain to think back to Thermo, but I'm pretty sure the angle of the wave had to do w/ the shape of the object the air was being decelerated around. Maybe an aero E wants to shed some light....
 
FYI...............:D

700kts = 805mph

Speed of sound (dry air at sea level) = 770mph
 
Praying4OCS said:
FYI...............:D

700kts = 805mph

Speed of sound (dry air at sea level) = 770mph
Click to expand...
orly.jpg
 
MIDNJAC said:
True, although I'm not so sure about his quote "forget about oblique shock wave theory".....I'm really straining my brain to think back to Thermo, but I'm pretty sure the angle of the wave had to do w/ the shape of the object the air was being decelerated around. Maybe an aero E wants to shed some light....
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Yeah, it does depend on the shape of the object. Most of the basic theoretical stuff deals with a shockwave forming at the apex of a wedge, so varying the angle of the wedge will change the angle of the shockwave. There's a decent flash based shockwave simulator that NASA put together as part of their idiot's guide to all things aerospace, but I can't find the exact page. This page has a decent explanation of oblique shockwave properties.

Edit: the simulator is about halfway down the page I linked to.

/nerd talk
 
Easy there Sparky...there are lots of people out there just waiting to prove you wrong...most of them smartass medical techs at NAMI.

/end threadjack
 
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