Clean up the airframe so it can get a glide ratio of 15:1 at 300mph and you can keep the same motor and fuel consumption.

 

The numbers below come out to a glide ratio of just better than 10:1

 

Wolfgang

 

From: Lorn H Olsen <lorn@dynacomm.us> Sender: <marv@lancaironline.net> Subject: LNC2/320 Cruise Speed Date: Fri, 25 Jun 2010 13:59:58 -0400 To: lml@lancaironline.net

06/22/10 I was flying from Detroit to Ft Lauderdale at 11,000. With nothing else to do, I thought that I would take a few measurements. Condition LOP Lo ROP Hi --------- -------- --------- 11,000 IA 2,350RPM 2,700 RPM 13,000 DA 19.3"MP 19.8"MP 30.08 "Hg 6.0 GPH 8.6 GPH 12°C temp 139 kts IAS 152 kts IAS 35°F dewpt? 168 kts TAS 183 kts TAS 1,670 lbs For a 43% increase in fuel, a 9% increase in airspeed doesn't sound like much. However, 183 kts airspeed at 13,000 ft density altitude, no matter how you do it, is great. The LOP reading at .435 BSFC comes out to HP = 36 * 6 * .435 = 94.0 HP or 94.0 / 160 = 59% power. Comments appreciated. Lorn