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Post up facts and things that hardly anyone knows...... (for entertainment purposes only. NO need to fact check)

That's part of the reason why they re-fuel the Blackbird after take-off.....as it leaks so much fuel until reaching a decent airspeed.
 
No. It's pure science....speed generates heat, and heat makes metal expand. :)
I agree with that, I just found the part about a 9 inch growth in length to be like an exaggeration like those add three inches ads in men's magazines.
 
I agree with that, I just found the part about a 9 inch growth in length to be like an exaggeration like those add three inches ads in men's magazines.
How much gain did you personally see?:lol:
 
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What is this man selling?
Screenshot_20241210_230020_YouTube.jpg
Different flavors?
 
You can kill roaches with soda pop, they cant burp. You can clear your garden of slugs with a lid full of beer. I took out 14 chipmunks in 1 weekend with a bucket tip trap.
 
Hey, it's a european aircraft...use centimeters :poke:
 
Come on, man...It just seemed impossible.
I thought you might have been exaggerating to see who was paying attention.

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The fuselage length expansion was the reason the interior seating floor was on rollers, not fixed to the outside skin with hard points. It was designed to accommodate up to a foot of expansion.
 
You can clear your garden of slugs with a lid full of beer.
That works for snails also..... they go all green and frothy. We had a major snail infestion in London.....I put a few lids out with beer (ale) and they made a beeline for it.....killed almost instantly.

The neighbour from whose property they came, had some free-roaming turtles (some sort of shelled critters) and their sh*t really honked in the warmer months. We used to throw the snails on their roof....and one time I was so pissed off I put a few through his mailbox. (UK mailboxes are predominantly a slot in the front door)
 
Hey, it's a european aircraft...use centimeters :poke:
Something the British engineers had to wrangle with during the design.

Concorde was designed using Slide Rules. Imagine that these days...... using a Slide Rule and Washing Machines for dimensions. :lol:
 
That's part of the reason why they re-fuel the Blackbird after take-off.....as it leaks so much fuel until reaching a decent airspeed.


"Col. Richard H. Graham, a former SR-71 pilot, explains why the Blackbird had to refuel right after takeoff in his book SR-71 The Complete Illustrated History of THE BLACKBIRD The World’s Highest, Fastest Plane.


“Many people believe we refueled after takeoff because the aircraft leaked fuel so profusely that we needed to fuel up quickly. We had to refuel right after takeoff for only one reason, and it wasn’t because we leaked JP-7 fuel on the ground. Yes, the plane does leak fuel, but not enough to require refueling after takeoff.


“The JP-7 fuel reaches temperatures well over 300 degrees F. during Mach 3 cruise, making the fumes in each of the six fuel tanks very volatile and potentially explosive. The metal skin of the aircraft approaches 400 degrees F., adding to the volatility of the fuel inside the tanks. One of our aircraft limitations was a maximum speed of Mach 2.6 without an inert atmosphere inside the fuel tanks.

The aircraft had three liquid nitrogen Dewar flasks containing 260 liters of liquid nitrogen, located in the nose wheel well. The only way to ensure a 100 percent inert atmosphere in each fuel tank was to refuel the plane inflight completely full of JP-7, allowing ambient air in each fuel tank to vent overboard. Once full of fuel, gaseous nitrogen would now dominate each fuel tank’s empty space above as it burned off JP-7. The nitrogen gas pressurized each fuel tank to 1.5 psi above ambient pressure and inerts the space above the heated fuel to prevent autogenous ignition. This is why we refueled after takeoff. Then we could safely accelerate beyond Mach 2.6."
 
"Col. Richard H. Graham, a former SR-71 pilot, explains why the Blackbird had to refuel right after takeoff in his book SR-71 The Complete Illustrated History of THE BLACKBIRD The World’s Highest, Fastest Plane.


“Many people believe we refueled after takeoff because the aircraft leaked fuel so profusely that we needed to fuel up quickly. We had to refuel right after takeoff for only one reason, and it wasn’t because we leaked JP-7 fuel on the ground. Yes, the plane does leak fuel, but not enough to require refueling after takeoff.


“The JP-7 fuel reaches temperatures well over 300 degrees F. during Mach 3 cruise, making the fumes in each of the six fuel tanks very volatile and potentially explosive. The metal skin of the aircraft approaches 400 degrees F., adding to the volatility of the fuel inside the tanks. One of our aircraft limitations was a maximum speed of Mach 2.6 without an inert atmosphere inside the fuel tanks.

The aircraft had three liquid nitrogen Dewar flasks containing 260 liters of liquid nitrogen, located in the nose wheel well. The only way to ensure a 100 percent inert atmosphere in each fuel tank was to refuel the plane inflight completely full of JP-7, allowing ambient air in each fuel tank to vent overboard. Once full of fuel, gaseous nitrogen would now dominate each fuel tank’s empty space above as it burned off JP-7. The nitrogen gas pressurized each fuel tank to 1.5 psi above ambient pressure and inerts the space above the heated fuel to prevent autogenous ignition. This is why we refueled after takeoff. Then we could safely accelerate beyond Mach 2.6."
Thankfully that will never be a question on "The Chase" :lol:
 
Nitrogen has also been employed to reduce ignition risks in the transportation of flammable dry bulk products. I dealt with it personally in unloading powdered magnesium. The trailer would be pressurized by means of a closed nitrogen system, with gas being captured when it was done pushing product through the pipe.

In a closed space such as a tanker, it's deadly, immediately replacing oxygen, and leading to loss of consciousness in about 20 seconds. I initially learned of the danger from another driver, while we were waiting at a tank wash.
My employer lost a mechanic to a nitrogen blanket early in my career. I pushed hard for confined space training when I got into management, and I always worried it wasn't enough.
 
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