Search found 663 matches

by mtskull
Sat Apr 10, 2010 12:28 pm
Forum: Bluebird Rebuild
Topic: The Last run....
Replies: 175
Views: 128138

Re: The Last run....

jets ingesting a big mouthful of water pull their compressor blades off in a forwards direction in an effort to move a much heavier medium. All that had happened to K7's blades was that the first stage had flexed forward a little and rattled around the inside of the guide vane ring. No power, see? ...
by mtskull
Wed Apr 07, 2010 9:16 am
Forum: Bluebird Rebuild
Topic: The Last run....
Replies: 175
Views: 128138

Re: The Last run....

I'll get my coat.... Seriously, thanks for that Bill. I guess it was too great an assumption that a 1950's military turbojet with a lashed-up fuel system would behave in as predictable and benign a manner as a modern, twin spool turbofan equiped with nice things like variable stator vanes and FADEC....
by mtskull
Tue Apr 06, 2010 11:50 pm
Forum: Bluebird Rebuild
Topic: The Last run....
Replies: 175
Views: 128138

Re: The Last run....

the engine would have spooled down uncommandedly as the engine-driven piston pump cavitated causing a loss of thrust and the aerodynamic centre of pressure to move aft along the underside rather quickly. The engine driven pump of a turbine engine doesn't depend on the booster pump(s) for the engine...
by mtskull
Mon Apr 05, 2010 12:38 pm
Forum: Bluebird Rebuild
Topic: The Last run....
Replies: 175
Views: 128138

Re: The Last run....

Wow, that was quick!

-Thanks Bill, that is all fascinating stuff, and food for thought.
by mtskull
Mon Apr 05, 2010 12:02 pm
Forum: Bluebird Rebuild
Topic: The Last run....
Replies: 175
Views: 128138

Re: The Last run....

Going back to the statement re. the snapped forward engine mounting, whilst accepting that you have ascertained for certain that it broke in tension, can you be 100% sure that this couldn't have happened during the accident? -I would have thought that, given the manner in which the aft part of Blueb...
by mtskull
Tue Mar 30, 2010 6:13 pm
Forum: Bluebird Rebuild
Topic: The Last run....
Replies: 175
Views: 128138

Re: The Last run....

Hopefully there might be an engineering/mathematical wizard watching this forum who can do a swift analysis of the rotating mass v. RPM of the Orpheus, then weigh in and tell us whether the gyroscopic effect was likely to have been significant. -On second thoughts, I'm in a hotel in Toulouse that is...
by mtskull
Tue Mar 30, 2010 12:30 pm
Forum: Bluebird Rebuild
Topic: The Last run....
Replies: 175
Views: 128138

Re: The Last run....

Turning left is using gyroscopic precession to pick up a sponson and unstick it. The only way I could see the brake helping to lift the back of the boat is if were to behave in the same way as a hydrodynamic device called an interceptor. It's basically a surface that sticks vertically down into the...
by mtskull
Fri Mar 26, 2010 1:47 pm
Forum: Bluebird Rebuild
Topic: Pic of the Day
Replies: 2374
Views: 1654422

Re: Pic of the Day

Renegadenemo wrote:
2 Beryl's and two Orpheus' (Orphei?)
Orpheuses (Orpheus' would be the posessive plural) - it's Greek. Were it Latin it would be Orphei. Like Octopuses, Octo is Latin but 'pus' is Greek for foot it would be 'pod' in Latin.
You are clearly a cunning linguist.... :lol:
by mtskull
Wed Mar 24, 2010 6:28 pm
Forum: Bluebird Rebuild
Topic: Pic of the Day
Replies: 2374
Views: 1654422

Re: Pic of the Day

[quote="Renegadenemo"][quote] No idea how many engines have been in there As a starting suggestion, how about: 1) Original Beryl from the cancelled Saro SR.A/1 flying boat fighter 2) Replacement Beryl (from same source?) after Lake Mead sinking 3) Orpheus from Gnat XM691 4) Replacement Orp...
by mtskull
Tue Mar 23, 2010 9:57 pm
Forum: Bluebird Rebuild
Topic: Dead Metal
Replies: 109
Views: 100118

Re: Dead Metal

We have no way of knowing how much better future generations may be at gleaning information from old artifacts or what technology may one day exist to enable them to do so; That's absurd- with that approach we'd do nothing, to anything, ever. 'Just in case'. No, all that is necessary is to strike t...