|
|
Hi Yvon,
That web page uses a Java application to do the calculations. You may
just have to enable Java and/or Java Script in your preferences. I also
use Firefox on Linux.
Bob W.
On Mon, 7 Aug 2006 10:25:10 -0400
atlasyts@bellsouth.net wrote:
> I'm using Mac with Firefox browser. get it for free at: http://
> www.mozilla.com
> Buly
> On Aug 7, 2006, at 10:12 AM, Yvon Cournoyer wrote:
>
> > Thanks Buly, I will study this reference some more, but the
> > Hoverhawk calculator does not work on my Windows XP PC. Which
> > browser are you using?. Yvon.
> >
> > ----- Original Message ----- From: "Bulent Aliev"
> > <atlasyts@bellsouth.net>
> > To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> > Sent: Monday, August 07, 2006 6:36 AM
> > Subject: [FlyRotary] Re: PROPELLERS AND COOLING THE ROTARY
> >
> >
> >> Hi Yvon,
> >> Looks like you are over propped. here is a quote from a prop speed
> >> web page:http://www.hoverhawk.com/propspd.html
> >> " To produce maximum thrust from your propeller at full power
> >> your tip speed should fall between .88 and .92 mach. To move
> >> between .88 and .92 mach usually takes a change of about 110 to
> >> 120 RPM depending upon the diameter of your prop. This of course
> >> varies depending on your particular propeller and the
> >> temperature. Try different temperatures then you will see just
> >> how much the speed of sound can vary. You would ultimately want
> >> your propeller to reach its redline (. 88 to .92 mach) at the same
> >> time your engine reaches its maximum rpm limit, its redline. "
> >> You should be turning the engine 6500-7000 rpm on takeoff (not
> >> static) for best thrust.
> >>
> >>
> >> Bulent "Buly" Aliev
> >> FXE Ft lauderdale, FL
> >> http://tinyurl.com/s5xw8
> >>
> >>
> >>
> >>
> >>
> >>
> >> On Aug 6, 2006, at 4:56 PM, Yvon Cournoyer wrote:
> >>
> >>> I have replaced my old wood 2 blades 74'' propeller with a new 3
> >>> blades 72'' Warp Drive, ground adjustable.
> >>> I have set the pitch to obtain about 4800 engine static rpm,
> >>> which is what I began flying with my old wood prop, some years ago.
> >>> No other changes, yet in spite of abnormally hot and humid
> >>> weather, I find that both oil and coolant cool better and will
> >>> allow longer full power static runups.
> >>> I have not flown the new prop yet, but I am eager to verify its
> >>> performance at altitude.
> >>> Yvon.
> >>>
> >>>
> >>> --
> >>> Homepage: http://www.flyrotary.com/
> >>> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/
> >>
> >>
> >> --
> >> Homepage: http://www.flyrotary.com/
> >> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/
> >
> >
> >
> > --
> > Homepage: http://www.flyrotary.com/
> > Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/
>
> Buly
> http://tinyurl.com/dcy36
>
>
>
>
>
> --
> Homepage: http://www.flyrotary.com/
> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/
--
http://www.bob-white.com
N93BD - Rotary Powered BD-4 (first engine start 1/7/06)
Custom Cables for your rotary installation -
http://www.roblinphoto.com/shop/
|
|