flyrotary@lancaironline.net Mailing List Archive

Thanks Andrew. Yes please, the relevant pages re shape of inlets. Do we know is this is still the current science? Steve > On 11 May 2020, at 10:42 am, Andrew Martin andrew@martinag.com.au <flyrotary@lancaironline.net> wrote: > > Aerodynamics of Propulsion > Dietrich Kuchemann > Johanna Weber > 1st Edition 1953. > > I got a copy at reasonable price, it is a photocopy of an original, but cannot for the life of me find the bookstore I purchased from. but vague memory makes me think it was a online specialty technical bookstore that only sells photocopies from their library copies.( I know, lots a help!)😀 > Well worth the read if you can find it. > I could possibly scan a few relevant chapters if needed. > > Regards > Andrew Martin > > > > > > > On Sun, May 10, 2020 at 6:14 AM Stephen Izett stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote: > Hi Finn > Yes, I’d like the science on inlet lips. > Just reworked our oil inlet and all I have is this drawing. > > Steve > <dmilokfngohbjnef.png> > >> On 9 May 2020, at 10:15 pm, Finn Lassen finn.lassen@verizon.net <flyrotary@lancaironline.net> wrote: >> >> Opposite of what I understand: >> You want a large external radius and a smaller inside radius. >> >> I've in vain been searching for the NACA paper that Tracy Crook get the exact number (internal/external) from. Probably somewhere between 0.5 and 0.8. >> >> Finn >> >> On 5/8/2020 11:02 PM, Terry Adams terrywadams@sbcglobal.net wrote: >>> You may want to test the lip/airflow on the scoop to your cooling.ï¿½ Adding a generous radius to the inside may add considerable airflow.ï¿½ Consult the work and directions given by Peter Garrison and his plane Melmoth (www.melmoth2.com).ï¿½ jm2c fwiw >>> >>> Terry >>> >>> On 5/8/2020 3:34 PM, 12348ung@gmail.com wrote: >>>> Le Roux, >>>> You have done a great job so I hesitate to add photos of >>>> my work, but here goes Neil. >>>> >>>> -----Original Message----- >>>> From: Rotary motors in aircraft >>>> <flyrotary@lancaironline.net> >>>> >>>> Sent: Friday, May 8, 2020 10:31 PM >>>> To: Rotary motors in aircraft >>>> <flyrotary@lancaironline.net> >>>> >>>> Subject: [FlyRotary] Re: Rotary Engine Noise >>>> >>>> Hello Le Roux: >>>> This Frontal photo tells you quite a bit about my cowlings and my airplane. >>>> The top two inlets are for my oil coolers (2 x Fluidyne DB-30416) and the >>>> bottom inlet is for my radiator (Griffin 2-58185-X). >>>> With a "Chubby Cubby" drag is given, things like Aero-Turbine mufflers and >>>> long exhaust pipes (to get noise behind cabin) are not too significant. >>>> >>>> >>>> Jeff: Thanks for taking us aboard the flight over the Ottawa River! >>>> >>>> I am a relative new member on the group, and are not on terms, with the FWF >>>> installations of the members. >>>> >>>> Is it possible to post some info of your 13B installation and cowling? >>>> >>>> >>>> Thanks Le Roux Breytenbach >>>> >>>> South Africa >>>> >>>> >>>> >>>> -- >>>> Homepage: >>>> http://www.flyrotary.com/ >>>> >>>> Archive and UnSub: >>>> http://mail.lancaironline.net:81/lists/flyrotary/List.html >>> >>> -- >>> Communication ink and paper free >>> >> >> >