They had to refuel right after takeoff to be able to get into the air. Also they leaked fuel like a sieve on the ground and needed to heat up from speed to tighten up the joints.
I met a guy at a former job who'd worked for Northrop as an engineer in late 50's/early 60's. Apparently they were tasked with designing the hydraulics but they were only given minimal info on what they were designing for. He later figured out it was the SR-71.
He said a huge issue was dealing with heat build up in the hydraulic fluid. They hit on the idea of using the fuel as the hydraulic fluid. Instead of recirculating the fluid and having to cool it, you sent it to the engine and effectively dumped the heat out the back. That was a pretty clever way to shed waste heat.
The refuel thing after take-off was actually for safety. It could take-off with full tanks and go operational to full altitude and speed with a couple thousand miles till it required fuel. If however there was a flame-out in one of the engines at lift-off, there was no margin for recovery. Also saved wear on the air frame. Lots of things were said about it to mislead people from knowing it's true capabilities. You'll never know how fast it really was. Pilots only used the amount of go needed to stay safe. Ask me about bombers with an F designation that hurt their selves with speed sometime. Will make you go Hmmm. "When you think you have it figured out, you're wrong." May tell a fairytale around a "HC" campfire.
My brother worked at a radar installation in Germany and they had one go off their radar at 110000 feet so who knows how high it would go for sure.Thats as far as there radar could reach.
If you have an interest in SR71 entertainment, I suggest a book "sled driver". It's out of print and hardcopies are $300000 but I have it in PDF so no glossy pictures to lick but at least the text is there.
FYI: There is now a block of rooms set up for EBR Homecoming, between the dates of Tuesday, May 31 and Saturday, June 4. The rate is currently $79.99 per night. If we get more than 10 rooms reserved, the rate will drop more:
Quality Inn & Suites 2921 O'Leary Lane East Troy, WI, 53120 (262)642-2100
This is walking distance to the factory, (...but who would do that?). I stayed there for the Open House and a couple of other visits and plan to hit it again in June. On-line posted rate is $110 per night (currently showing a "best price" special of $93) so this is a good deal! No, you don't need to stay the full week for the block price!
Gus's Drive-In (typically Buell/EBR Homecoming feedbag/watering hole!) is just around the corner from the square, which has plenty of other options for food or beverages.
Call them and tell them you need a room and rate for the "EBR Homecoming" block. If there's any issues, ask to speak with Josh Patel, the manager, who I spoke with. He's anxious to have us as guests and also made an appearance at the Open House, so he knows us!! ...and set up the reduced pricing anyway!
Please post up here so folks know about how many are planning to stay there and we can kind of keep track of MAYBE an even better rate!
Any updates or news will be posted HERE on BadWeb, but feel free to pass the info on to whatever website might garner the most attention.