On Wed, 28 Apr 2004 12:26:42 +0100, David wrote in message <[EMAIL PROTECTED]>:
> > > On 4/19/04 at 11:12 PM Vivian Meazza wrote: > >All you ever wanted to know about a Merlin with 2 speed, 2 stage > >supercharging is here: > > > >http://www.unlimitedexcitement.com/Pride%20of%20Pay%20n%20Pak/Rolls- > >Royce%2 > 0 > >Merlin%20V-1650%20Engine.htm > > > >Except exactly how the boost contol valve worked :-) > > > > Nice link! > > I've found a reference describing the BCV mechanism ("Thrust for > Flight" by W. Thomson), apparently it consisted of a stack of metal > aneroids that contract under increased pressure. This makes perfect > sense - it would measure absolute pressure, and I believe is similar > to the mechanism used in many barometers. ..search these for "aneroid". http://naca.larc.nasa.gov/index.cgi?method=search&limit=25&offset=0&mode=simple&order=DESC&keywords=supercharger+stage http://www.cebudanderson.com/viewfromtheline.htm http://www.dallasjournal.com/articlesview.php?ID=295 http://www.aircadets.org/pdf/acp33vol3.pdf http://www.unlimitedexcitement.com/Griffon Budweiser/Rolls-Royce Griffon Engine.htm http://www.home.aone.net.au/shack_one/rolls.htm -- ..med vennlig hilsen = with Kind Regards from Arnt... ;-) ...with a number of polar bear hunters in his ancestry... Scenarios always come in sets of three: best case, worst case, and just in case. _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
