X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 25 Jun 2010 16:48:44 -0400 Message-ID: X-Original-Return-Path: Received: from imr-da06.mx.aol.com ([205.188.169.203] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4370868 for lml@lancaironline.net; Fri, 25 Jun 2010 16:14:34 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.169.203; envelope-from=Sky2high@aol.com Received: from imo-da01.mx.aol.com (imo-da01.mx.aol.com [205.188.169.199]) by imr-da06.mx.aol.com (8.14.1/8.14.1) with ESMTP id o5PKDUFK017143 for ; Fri, 25 Jun 2010 16:13:30 -0400 Received: from Sky2high@aol.com by imo-da01.mx.aol.com (mail_out_v42.9.) id q.dda.c6d9a5a (37119) for ; Fri, 25 Jun 2010 16:13:11 -0400 (EDT) Received: from magic-m16.mail.aol.com (magic-m16.mail.aol.com [172.21.188.208]) by cia-ma01.mx.aol.com (v129.4) with ESMTP id MAILCIAMA015-90ff4c250dd62e8; Fri, 25 Jun 2010 16:13:10 -0400 From: Sky2high@aol.com X-Original-Message-ID: <2cbe1.5bbf5721.395667d6@aol.com> X-Original-Date: Fri, 25 Jun 2010 16:13:10 EDT Subject: Re: [LML] LNC2/320 Cruise Speed X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_2cbe1.5bbf5721.395667d6_boundary" X-Mailer: AOL 9.5 sub 155 X-AOL-ORIG-IP: 67.175.87.113 X-AOL-IP: 172.21.188.208 X-Spam-Flag:NO X-AOL-SENDER: Sky2high@aol.com --part1_2cbe1.5bbf5721.395667d6_boundary Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable Lorn, =20 Efficient little suckers, aren't they? =20 I don't have any recent precisely comparable numbers but here are some =20 from my April trip to SNF (actually, the return, 30 minutes NW of KGAD): =20 WOT, 10550 MSL, 11360 Dalt, 10C, 21.5" MAP, 2500 RPM, ~100F ROP, 8.3 GPH,= =20 27 DBTDC =3D=3D=3D 168 KIAS, 198 KTAS, 193 Kts Ground Speed. I was in a hu= rry to =20 get home. =20 The previous April on my way to Austin, TX (to 3R9 from KARR, I did not = =20 want to stop for fuel) and over Lebanon, MO: =20 WOT, 8500 MSL, 8240 Dalt, 2C, 23.3" MAP, 2480 RPM, ~20-30F LOP, 6.9 GPH,= =20 timing not recorded =3D=3D=3D 171 KIAS, 193 KTAS, 208 Kts Ground Speed. = Block to =20 Block 4 hr 25 min and 31 gallons used (avg 7.05 GPH over 826 NM and 30.7= SM=20 per Gallon). Wow! =20 Scott Krueger IO 320 TAS is from my on board air data computer. =20 =20 In a message dated 6/25/2010 1:00:17 P.M. Central Daylight Time, =20 lorn@dynacomm.us writes: 06/22/10 I was flying from Detroit to Ft Lauderdale at 11,000. With=20 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=B0C temp 139 kts IAS 152 kts IAS 35=B0F 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= =20 much. However, 183 kts airspeed at 13,000 ft density altitude, no matter= how=20 you do it, is great. The LOP reading at .435 BSFC comes out to HP =3D 36 * 6 * .435 =3D 94.0= HP or=20 94.0 / 160 =3D 59% power. Comments appreciated. Lorn -- Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us LNC2, FB90/92, O-320-D1F, 1,700 hrs, N31161, Y47, SE Michigan -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.ht= ml --part1_2cbe1.5bbf5721.395667d6_boundary Content-Type: text/html; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable <= FONT id=3Drole_document color=3D#000000 size=3D2 face=3DArial>

Lorn,

Efficient little suckers, aren't they?

I don't have any recent precisely comparable numbers but here ar= e some=20 from my April trip to SNF (actually, the return, 30 minutes NW of KGAD):

WOT, 10550 MSL, 11360 Dalt, 10C, 21.5" MAP, 2500 RPM, ~100F ROP, 8.3= GPH,=20 27 DBTDC =3D=3D=3D 168 KIAS, 198 KTAS, 193 Kts Ground Speed. I was in= a hurry to=20 get home.

The previous April on my way to Austin, TX (to 3R9 from KARR, I did= not=20 want to stop for fuel) and over Lebanon, MO:

WOT, 8500 MSL, 8240 Dalt, 2C, 23.3" MAP, 2480 RPM, ~20-30F LOP, 6.9= GPH,=20 timing not recorded =3D=3D=3D 171 KIAS, 193 KTAS, 208 Kts Ground Speed.&nb= sp; Block to=20 Block 4 hr 25 min and 31 gallons used (avg 7.05 GPH over 826=20 NM and 30.7 SM per Gallon). Wow!

Scott Krueger

IO 320

TAS is from my on board air data computer.

In a message dated 6/25/2010 1:00:17 P.M. Central Daylight Time,=20 lorn@dynacomm.us writes:

06/22/10=20 I was flying from Detroit to Ft Lauderdale at 11,000. With nothing else= to do,=20 I thought that I would take a few measurements.

=20 Condition   LOP Lo ROP Hi
= =20 ---------   -------- ---------
= 11,000=20 IA   2,350RPM 2,700 RPM
13,000= =20 DA   19.3"MP    19.8"MP
30.08= =20 "Hg   6.0 GPH    8.6 GPH
12= =B0C=20 temp   139 kts IAS 152 kts IAS
35=B0F dewpt?= 168 kts=20 TAS 183 kts TAS
1,670 lbs

For a 43% increase in= fuel,=20 a 9% increase in airspeed doesn't sound like much. However, 183 kts airs= peed=20 at 13,000 ft density altitude, no matter how you do it, is great.
The=20 LOP reading at .435 BSFC comes out to HP =3D 36 * 6 * .435 =3D 94.0 HP= or 94.0 /=20 160 =3D 59% power.

Comments appreciated.

Lorn

--Lorn H.=20 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
DynaComm, Corp.,=20 248-345-0500, mailto:lorn@dynacomm.us
LNC2, FB90/92, O-320-D1F, 1,700= hrs,=20 N31161, Y47, SE Michigan

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For archives and unsub=20 http://mail.lancaironline.net:81/lists/lml/List.html

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