Originally posted by American Mad Man
[Dude - the real specs for the SR-71 are still secret to this day.
- I'm not denying that AMM. I do think we are there or there abouts with what we have on it now though.
The SR-71 STILL holds every speed record and any time anything comes close they fly one and push the throttle a tad more, beat the other
aircraft, and readjust the "max speed".
- Again I do not deny the SR71 holds records......although extending them now would be a tad difficult with none available for that kind of flying
anymore?
Prestige? Who cares about that when vital national secrets are concerned? Give me a break!
- Sorry mate but 'prestige'
was a great big deal when there were 2 systems of government competing in the world.....hell, regardless of all
the other claims made for it the fact is we spent vast fortunes going to the moon first over mere 'prestige'.
You don't just announce the limits of an aircraft to make the enemy spend money to counter it - just like the F/A-22 is stated at a Mach 1.8
aircraft. Yeah right! The US isn't going to just give away it's aircrafts limits - they give you a low figure, and make the enemy try and figure out
what it can do.
- I doubt it would happen now but then the situation is so changed.
But back in the 50's and 60's they did give fair ideas over specs. They just did matey, it's a fact.
Record flights especailly were a big deal with the latest Russian stuff contesting records with the latest US stuff.....and you were supposed to infer
that F15's could all perform like a 'Streak Eagle' or the YE - 155 told you everything about Mig 25's etc.
I mean, just take a look at a normal fighter - they are generally in the low/mid Mach 2 class. Now look at the Blackbird - clearly a LOT more
aerodynamic, and CLEARLY has A LOT more thrust.
- Yes that is true.
It is also true that the power requirement to go fly faster works on a logarithmical scale and not a straight-forward and linear one.
In other words to go 10% faster does not require 10% more power but maybe 100% (the square) more power.
Therefore seeing a Blackbird with 2 big J58's rated around the 32,500lb mark does not mean approx 45% more speed than an F4 phantom with J79's rated
around the 18 000lb.
This was reported by Nick Cook (aviation editor of Janes defense...Yes, your very own nations best selling military publication) in his book
"The Hunt For Zero Point" in which he interviews the chief designer of the Blackbirds competitor aircraft. I think that guy knows better then you or
I about what HIS aircraft could do. I am just going off of what HE says - not some BS "source" I have or some cockamamy nut jobs book. This guy is
in more of a position to know then any other civillian.
- Yes, that is true. It is also true that people can disinform or be misquoted or misprinted.
Think about it - the US had the materials to allow a space ship to come back to Earth at Mach 25, so it's not like that was a problem. Thrust
really isn't that much of a problem either. As the book said, the problem with the aircraft was mainly cost and range. Thats why the Blackbird beat
it out. Most likely the Blackbird isn't a Mach 6 125K ft spyplane like the other one, but it must be some where in that range if it beat it
out.
- What's the bets the 'range' was one of range (due to fule consumption),practicality, cost and time to production?
Of course the outright speeds were possible, as you say orbit alone means you must have made 17000mph.....but consider just how much fuel is used
achieving that!
And like I pointed out, just compare the Blackbird to any normal fighter. Are you telling me that with all of that additional thrust and the
MUCH more aerodynamic shape that all it can pull is an extra Mach .5? Yeah right.
- Well believe it or not yes that is exactly my thougts on the matter.
I believe a top speed around the mach 3.5 - 3.8 range and an operating height of 100 - 120 000ft.