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Plane that is faster than a bullet...

The Oregonian

Well-Known Member
Joined
Jul 20, 2012
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Location
Montana
Not gun related, but very cool and people here can probably appreciate this as most know how long it seems to take to hit a target at 1000 yds or more. If my calcs are correct, my 30-06 at 2800 fps is going about 1900 mph at the muzzle, so obviously a lot less when it is out several hundred yards.

It is obviously way bigger than a bullet, but is it something you would even be able to see (the fact that it flies at 80,000 feet aside)? That is an honest question as I really don't know. And putting aside the turbulence or concussion that would wallop you if you were anywhere close....

Apologize if folks have seen this but I have never hard of it before.

2,200 mph plane
 
Not gun related, but very cool and people here can probably appreciate this as most know how long it seems to take to hit a target at 1000 yds or more. If my calcs are correct, my 30-06 at 2800 fps is going about 1900 mph at the muzzle, so obviously a lot less when it is out several hundred yards.

It is obviously way bigger than a bullet, but is it something you would even be able to see (the fact that it flies at 80,000 feet aside)? That is an honest question as I really don't know. And putting aside the turbulence or concussion that would wallop you if you were anywhere close....

Apologize if folks have seen this but I have never hard of it before.

2,200 mph plane

The Blackbird is an awesome plane ... PERIOD!

I spent my 1st 10 years in the USAF in the fightline working F-4s and A-10s. The SR-71 flies at a certain altitude where there's the least wind resistance (thinner air) to take advantage of it's awesome speed. If you check how the Mach Number is calculated, it is directly proportional to the altitude.

Anyways, it might make it easier to relate if you look at it as weight to thrust ratio, i.e., F-4 with two engines vs. a single engine F-16, if given the same thrust from the engines, the lighter of the two aircraft will accelerate quicker and get to it's maximum velocity/speed. The massive engines of the SR-71 provides an unbelievable thrust.

Similarly, the space shuttle despite of it's heavy payload can do 17,500 MPH to propel it to the atmosphere due to the massive rockets (8 Surprising Space Shuttle Facts | NASA Space Shuttle Trivia & Facts | Final Shuttle Missions & Shuttle Program)

Having said that, if you take the same bullet out of your .30-06 and provide a more powerful thrust like out of a .300 RUM and larger, as we all know the velocity changes significantly. :D

I definitely miss my flightline days, thanks for bringing back some awesome memories.

Cheers!
 
The Blackbird is an awesome plane ... PERIOD!

I spent my 1st 10 years in the USAF in the fightline working F-4s and A-10s. The SR-71 flies at a certain altitude where there's the least wind resistance (thinner air) to take advantage of it's awesome speed. If you check how the Mach Number is calculated, it is directly proportional to the altitude.

Anyways, it might make it easier to relate if you look at it as weight to thrust ratio, i.e., F-4 with two engines vs. a single engine F-16, if given the same thrust from the engines, the lighter of the two aircraft will accelerate quicker and get to it's maximum velocity/speed. The massive engines of the SR-71 provides an unbelievable thrust.

Similarly, the space shuttle despite of it's heavy payload can do 17,500 MPH to propel it to the atmosphere due to the massive rockets (8 Surprising Space Shuttle Facts | NASA Space Shuttle Trivia & Facts | Final Shuttle Missions & Shuttle Program)

Having said that, if you take the same bullet out of your .30-06 and provide a more powerful thrust like out of a .300 RUM and larger, as we all know the velocity changes significantly. :D

I definitely miss my flightline days, thanks for bringing back some awesome memories.

Cheers!
Yep, hard to believe this was designed on paper by guys with coke bottle horn rimmed glasses and the calculations done on a slide rule.

Pocket protectors and belt mounted slide rule cases were the mark of the brains of that day!

It's hard to even call it a plane because it was literally designed to fly on the edge of space and maxed I think at a paltry mach 1.2 till it got past 60k feet because pushing it faster in the thicker air even exceeded the temperature safe range for titanium.

If I remember correctly it was the SR71 in fact that really brought titanium metallurgy and machining into the real world initially.

I had an uncle and cousin who both worked on it's development and the cousin was instrumental in the stealth program as well. They and their colleagues pretty well invented the field of "Materials Science".
 
My favorite SR71 story:

This is an expanded excerpt from Brian Schul's book Sled Driver : Flying the World's Fastest Jet. (which happens to be out of print and ludicrously expensive now, I wish I had bought a copy when I could have afforded it).

There were a lot of things we couldn't do in an SR-71, but we were the fastest guys on the block and loved reminding our fellow aviators of this fact. People often asked us if, because of this fact, it was fun to fly the jet. Fun would not be the first word I would use to describe flying this plane. Intense, maybe. Even cerebral. But there was one day in our Sled experience when we would have to say that it was pure fun to be the fastest guys out there, at least for a moment.
It occurred when Walt and I were flying our final training sortie. We needed 100 hours in the jet to complete our training and attain Mission Ready status. Somewhere over Colorado we had passed the century mark. We had made the turn in Arizona and the jet was performing flawlessly. My gauges were wired in the front seat and we were starting to feel pretty good about ourselves, not only because we would soon be flying real missions but because we had gained a great deal of confidence in the plane in the past ten months. Ripping across the barren deserts 80,000 feet below us, I could already see the coast of California from the Arizona border. I was, finally, after many humbling months of simulators and study, ahead of the jet.


I was beginning to feel a bit sorry for Walter in the back seat. There he was, with no really good view of the incredible sights before us, tasked with monitoring four different radios. This was good practice for him for when we began flying real missions, when a priority transmission from headquarters could be vital. It had been difficult, too, for me to relinquish control of the radios, as during my entire flying career I had controlled my own transmissions. But it was part of the division of duties in this plane and I had adjusted to it. I still insisted on talking on the radio while we were on the ground, however. Walt was so good at many things, but he couldn't match my expertise at sounding smooth on the radios, a skill that had been honed sharply with years in fighter squadrons where the slightest radio miscue was grounds for beheading. He understood that and allowed me that luxury.


Just to get a sense of what Walt had to contend with, I pulled the radio toggle switches and monitored the frequencies along with him. The predominant radio chatter was from Los Angeles Center, far below us, controlling daily traffic in their sector. While they had us on their scope (albeit briefly), we were in uncontrolled airspace and normally would not talk to them unless we needed to descend into their airspace.


We listened as the shaky voice of a lone Cessna pilot asked Center for a readout of his ground speed. Center replied: "November Charlie 175, I'm showing you at ninety knots on the ground."
Now the thing to understand about Center controllers, was that whether they were talking to a rookie pilot in a Cessna, or to Air Force One, they always spoke in the exact same, calm, deep, professional, tone that made one feel important. I referred to it as the " Houston Center voice." I have always felt that after years of seeing documentaries on this country's space program and listening to the calm and distinct voice of the Houston controllers, that all other controllers since then wanted to sound like that, and that they basically did. And it didn't matter what sector of the country we would be flying in, it always seemed like the same guy was talking. Over the years that tone of voice had become somewhat of a comforting sound to pilots everywhere. Conversely, over the years, pilots always wanted to ensure that, when transmitting, they sounded like Chuck Yeager, or at least like John Wayne. Better to die than sound bad on the radios.


Just moments after the Cessna's inquiry, a Twin Beech piped up on frequency, in a rather superior tone, asking for his ground speed. "I have you at one hundred and twenty-five knots of ground speed." Boy, I thought, the Beechcraft really must think he is dazzling his Cessna brethren. Then out of the blue, a navy F-18 pilot out of NAS Lemoore came up on frequency. You knew right away it was a Navy jock because he sounded very cool on the radios. "Center, Dusty 52 ground speed check". Before Center could reply, I'm thinking to myself, hey, Dusty 52 has a ground speed indicator in that million-dollar cockpit, so why is he asking Center for a readout? Then I got it, ol' Dusty here is making sure that every bug smasher from Mount Whitney to the Mojave knows what true speed is. He's the fastest dude in the valley today, and he just wants everyone to know how much fun he is having in his new Hornet. And the reply, always with that same, calm, voice, with more distinct alliteration than emotion: "Dusty 52, Center, we have you at 620 on the ground."


And I thought to myself, is this a ripe situation, or what? As my hand instinctively reached for the mic button, I had to remind myself that Walt was in control of the radios. Still, I thought, it must be done - in mere seconds we'll be out of the sector and the opportunity will be lost. That Hornet must die, and die now. I thought about all of our Sim training and how important it was that we developed well as a crew and knew that to jump in on the radios now would destroy the integrity of all that we had worked toward becoming. I was torn.


Somewhere, 13 miles above Arizona, there was a pilot screaming inside his space helmet. Then, I heard it. The click of the mic button from the back seat. That was the very moment that I knew Walter and I had become a crew. Very professionally, and with no emotion, Walter spoke: "Los Angeles Center, Aspen 20, can you give us a ground speed check?" There was no hesitation, and the replay came as if was an everyday request. "Aspen 20, I show you at one thousand eight hundred and forty-two knots, across the ground."


I think it was the forty-two knots that I liked the best, so accurate and proud was Center to deliver that information without hesitation, and you just knew he was smiling. But the precise point at which I knew that Walt and I were going to be really good friends for a long time was when he keyed the mic once again to say, in his most fighter-pilot-like voice: "Ah, Center, much thanks, we're showing closer to nineteen hundred on the money."


For a moment Walter was a god. And we finally heard a little crack in the armor of the Houston Center voice, when L.A.came back with, "Roger that Aspen, Your equipment is probably more accurate than ours. You boys have a good one."


It all had lasted for just moments, but in that short, memorable sprint across the southwest, the Navy had been flamed, all mortal airplanes on freq were forced to bow before the King of Speed, and more importantly, Walter and I had crossed the threshold of being a crew. A fine day's work. We never heard another transmission on that frequency all the way to the coast.
 
I have read that they don't like being on the ground. They leak on the runway, are big and hard to move on the ground, but put it in the air and let it go fast, everything tightens up and it pushed the limits of imagination. If I remember correctly the guys that fly in them wear a modified space suit.
 
I have read that they don't like being on the ground. They leak on the runway, are big and hard to move on the ground, but put it in the air and let it go fast, everything tightens up and it pushed the limits of imagination. If I remember correctly the guys that fly in them wear a modified space suit.

I have read this also, they have to be flying high and fast and literally 'swell up' (I assume due to the friction/heat of the atmosphere) to seal the leaks.
 
Awesome read. Really make a great story to hear the guys are not so rigid that they were able to take a few moments and have a little fun when flying the fastest plane ever built.
 
It's proportional to the temperature, not altitude.

MN_zpsulnmirjg.jpg


Yes the speed of sound varies with temperature but the formula as seen above is the speed of sound at a given altitude.

MN%201_zpstc4mtba0.jpg


In this case, it's inversely proportional not directly proportional as I previously misquoted as I was going by memory. I left the flightline in 1996, so it's been awhile for me. BTW, I used to work the inertial navigation, weapons control, instrumentation, and guidance control systems.
 
L:DL! I just found mine ...

Yours is in better shape than mine is. I have an old K&E. It's laying in the shop mext to my TI calculator.

I find it much easier and less time consuming to use the tables in 'Machinery's Handbook' to extrapolate the things I need, like how many gage blocks to stack up to attain a certain angle...

I still need a magnifying glass to read the fine print....lol
 
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