Saw this AN-12 in Bangkok a couple weeks ago. Russian C-130.
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That pic is amazing.....
What was the sr-71 skin made of? And why did it leak so much fuel until it was heated up? Those are fun *facts* but the engineering side of me asks "why"? Why wasn't the fuel in blatters? Anyways.....
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Here's a cool vid of a B1b landing at Edwards when it's front nose gear didn't extend. Apparently they were re-directed to Edwards AFB for the dry lake bed vs going back to Texas where they came from.
******Side note.....So, my mom and dad met at Edwards air force base - way back in the day. My dad designed the liquid rocket engines for the Apollo program. And my mom was a civilian working in pool of secretaries for the solid rocket division. They even got married at the Officer's club on base there at Edwards.
My mom has a few stories of experimental planes that was a totally "hush hush", yet, they would do a fly over during a BBQ on a Saturday. And then you'd see them carried home in the back of a flatbed, in 100 parts. They lived in the offer's quarters, so they had some nice digs. But all the supersonic antics, left no plaster wall un-cracked.
So any video that is about Edwards I love to watch.
Anyways.....note the elevators when he tipped the nose down. I assume that's full extension.
I've seen a B1 at air shows, and they are HUGE. It's more of a flying building then a plane. That crew has some huge gonads.
Last edited by george graves; 02-27-2014, 06:38 AM.Originally posted by Matt-Bhey does anyone know anyone who gets upset and makes electronics?
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Originally posted by george graves View PostThat pic is amazing.....
What was the sr-71 skin made of? And why did it leak so much fuel until it was heated up? Those are fun *facts* but the engineering side of me asks "why"? Why wasn't the fuel in blatters? Anyways.....
...........................
Here's a cool vid of a B1b landing at Edwards when it's front nose gear didn't extend. Apparently they were re-directed to Edwards AFB for the dry lake bed vs going back to Texas where they came from.
******Side note.....So, my mom and dad met at Edwards air force base - way back in the day. My dad designed the liquid rocket engines for the Apollo program. And my mom was a civilian working in pool of secretaries for the solid rocket division. They even got married at the Officer's club on base there at Edwards.
My mom has a few stories of experimental planes that was a totally "hush hush", yet, they would do a fly over during a BBQ on a Saturday. And then you'd see them carried home in the back of a flatbed, in 100 parts. They lived in the offer's quarters, so they had some nice digs. But all the supersonic antics, left no plaster wall un-cracked.
So any video that is about Edwards I love to watch.
Anyways.....note the elevators when he tipped the nose down. I assume that's full extension.
I've seen a B1 at air shows, and they are HUGE. It's more of a flying building then a plane. That crew has some huge gonads.
Many times aircraft landed gear up can be repaired rather easily and returned to service in reasonable amounts of time. This is also likely why they wanted to do this landing in a dry lake bed instead of on a paved surface.
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Originally posted by george graves View PostThat pic is amazing.....
What was the sr-71 skin made of? And why did it leak so much fuel until it was heated up? Those are fun *facts* but the engineering side of me asks "why"? Why wasn't the fuel in blatters? Anyways.....
...........................
The guy is holding a piece of Beta Ti in his hand while heating the end of it to glowing hot, talk about heat dissipation.
Here is a good pic of just how hot the surface got in flight, and where it got the hottest.
As for why the SR-71 leaks. The fuel tanks are lined with a sealant at all the joints. They couldn't use a bladder to hold the fuel because they used the fuel to help cool the surface circulating it around and more or less using the fuel itself as a heat sink. Because the airframe did grow a pretty sizeable amount when it was up to temp obviously there were going to be areas that didn't seal well when it was cold. 3M made the epoxy sealant but in 30 years of use, they never did find a flexible sealant that would hold up to both the heat and the fuel. This is also why every 9 months or so an active plane would be flown to Palmdale, totally disassembled and given a very thorough overhaul. At this time the tanks would be resealed. The worst leaking one of the bunch was 981, the two seat SR-71C that was built from the static mockup cockpit and the aft airframe of the second YF12. The two were never meant to be together, and the aft bulkhead of the cockpit section was never sealed when it was built because it was never meant to fly. The C model had a huge fuel leak from the front fuel tank because of this (It also didn't fly straight.)
Another side note, how does one eat a hot lunch while flying the SR? You put the tube of food next to the windshield for 2 min, then flip it for 2 min and eat it. The inside temp of the windshield was as hot as an oven.
Will'59 Alfa Romeo 101.02 Giulietta Sprint
'69 Alfa Romeo 105.51 1750 GTV (R.I.P)
'69 Datsun 2000 roadster Vintage race car
'88 BMW M3
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^nice post. Thanks for the explanation - I see where you're going with that. I am surprised that flying that high(with so few air molecules), would cause that much drag, and then turn that into so much heat. It's not quite re-entry kind of friction, or speed.
Plus, the frontal area of a sr-71 is about 1 or 2 piper cubs. It's a razor blade.
It's hard to wrap your head around the dynamics of that plane.....I guess that's what I'm getting at.Originally posted by Matt-Bhey does anyone know anyone who gets upset and makes electronics?
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Little off topic from the SR-71 conversation. But my school received a 727 from FedEx as a donation to our flight program. It's never allowed to fly again but has been repainted and is free advertisement for the school and we can use it to learn more about the avionics in bigger aircraft. I'm just surprised that they were able to land it at Riverside (KRAL). And the school got a piper apache when they bought a hangar, it's been in there for like 20 years and the owner of the hangar didn't want to deal with selling it so he just gave it to the school.
Collegial aviation programs are amazing and I'm loving every minute of class and flight training.
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Originally posted by george graves View Post^nice post. Thanks for the explanation - I see where you're going with that. I am surprised that flying that high(with so few air molecules), would cause that much drag, and then turn that into so much heat. It's not quite re-entry kind of friction, or speed.
Plus, the frontal area of a sr-71 is about 1 or 2 piper cubs. It's a razor blade.
It's hard to wrap your head around the dynamics of that plane.....I guess that's what I'm getting at.
The interesting thing about the Blackbirds is the fact that the surface of them is not at all smooth. It was discovered that due to the way the boundry layer sat, it didn't need to be perfectly smooth. They wouldn't go any faster because of the way the boundary layer blanketed the rough areas. It still acted like it had a smooth skin at speed. The only thing that held the speed to a limit was the engine compressor inlet temps. Redline on the J58 is 420 degrees C, if you can keep the engines below that, hang on. On the last flight of 972 from LA to Dulles, during the planning stages it was figured that the flight could be done in about 45 minutes, if they exceeded the redline temp. The guys at Pratt & Whitney were contacted, and they said yes go for it, what do you have to loose? Sure the engines will be toast, but its the last flight so who cares. Air Force brass got wind of the plan and very nearly killed the flight altogether because they didn't want the SR-71 getting anymore positive press (because it would make them look like idiots for retiring them.) I believe it was Senators Glenn and Byrd who made the flight happen. Do the math on the distance and time to get from LA to D.C. in about 45 minutes. Max speed of 2200 mph my ass. The flight was done in 63 min (I think)
Will'59 Alfa Romeo 101.02 Giulietta Sprint
'69 Alfa Romeo 105.51 1750 GTV (R.I.P)
'69 Datsun 2000 roadster Vintage race car
'88 BMW M3
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Originally posted by BlackbirdM3 View Post
The interesting thing about the Blackbirds is the fact that the surface of them is not at all smooth. It was discovered that due to the way the boundry layer sat, it didn't need to be perfectly smooth. ...... Max speed of 2200 mph my ass. The flight was done in 63 min (I think)
Will
But for the sr-71.....Originally posted by Matt-Bhey does anyone know anyone who gets upset and makes electronics?
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Originally posted by mrsleeve View Postgurky what airport is that, I must go to where ever that place is..........................
New Zealand, the Alps somewhere, or the Eurasian mountains or something
Queenstown http://en.wikipedia.org/wiki/Queenstown,_New_Zealand
We're renting a house for two months this snowboard season :D come for a beer!
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Originally posted by BlackbirdM3 View PostSince you are in Victoria, take a day and head down to the Boeing Museum of flight at Boeing field. There you can actually sit in the cockpit of SR-71 977.Originally posted by Matt-Bhey does anyone know anyone who gets upset and makes electronics?
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