X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 27 Aug 2014 20:31:52 -0400 Message-ID: X-Original-Return-Path: Received: from nm14-vm1.access.bullet.mail.bf1.yahoo.com ([216.109.115.16] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTPS id 7117902 for lml@lancaironline.net; Wed, 27 Aug 2014 17:19:48 -0400 Received-SPF: none receiver=logan.com; client-ip=216.109.115.16; envelope-from=carlscheid@att.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=att.net; b=6UqdmDaa6wcyKKCM4qniSh3G5g8WGXazQhQ0jM4PiPpAOCpib58Dqr5i5aIAAAy7b6OxnT7q66d7JJ30V0LNkNP0kimRrVwXr0k8dZgLrahXq+CIhIHSCOPIhUryy3OV3lySA5YQeetHbp5uK/++yi4a3AkJcX+CcPM4Lls0OJk=; Received: from [66.196.81.164] by nm14.access.bullet.mail.bf1.yahoo.com with NNFMP; 27 Aug 2014 21:19:11 -0000 Received: from [98.138.104.100] by tm10.access.bullet.mail.bf1.yahoo.com with NNFMP; 27 Aug 2014 21:19:11 -0000 Received: from [127.0.0.1] by smtp120.sbc.mail.ne1.yahoo.com with NNFMP; 27 Aug 2014 21:19:11 -0000 X-Yahoo-Newman-Id: 480877.6595.bm@smtp120.sbc.mail.ne1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: kSKk9sgVM1kvpWV8Z.GMNXa.zKNN1yE0x6gWepx0RX925QD os8q1L4_QbZ1YFW5c_F0S4CwLOsLRvl9pl6OL.CH2anoP9iT51qLQy3_mxVI hXV2enQAfzsKWmvLv3M3hEqWi1wXkkdTSz5du_DZWQqjd.5TKgc86CjeG15X QEzGLBqhN3vDyL60k_6Apt7Qq05dOZN_w.1VtdIvvjf4DeoUJxv5HPe.TCbV _ShQxx7C5dOmGnUIC65B.CGeeaQZe07_MCiSiQKaRcii6n1XOfCIBHGkwWuf 27octbFx9rGbeCb8APd2POXi6gWgF8OI0pfe_qHUCDu4D9pMXF1JADdvmIzK NQws_0NcBvBePS3SjLlN0o6YYXORbaz65ij1ST8eDw0M9krfU_uAwDhQugc. Bszk1ZYBm9soqbiY.C_ikYsR0ZTttwocnAHYF1bEcXvUFwtAbhboBkJ2rPHD 8OnElLlcc9uf44j7laEbAYxcpv.pGyFrKXTSD81qsiAk6HTdYnG752.qnBZF sXfM- X-Yahoo-SMTP: ONhkNIeswBDU.fPNBpHS9S2wfmgUZGo_Xv0vf61NNw-- X-Original-Message-ID: From: "Carl Scheid" X-Original-To: "Lancair Mailing List" Subject: LNC4 POH X-Original-Date: Wed, 27 Aug 2014 16:19:09 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00B8_01CFC212.A21A0D90" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3555.308 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3555.308 This is a multi-part message in MIME format. ------=_NextPart_000_00B8_01CFC212.A21A0D90 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable For phase 1 flight testing we developed a spread sheet model that = tabulates performance versus altitude. Inputs included LIV and test = parameters. Model performance was made to reflect test performance by = tweaking lift efficiency, propeller efficiency and parasite drag = coefficient. The result was a model specific for our normally aspirated = N304R. Application to a turbo version would only require the addition = of engine altitude performance. Data collection was made easy through use of Cloud Ahoy. This free = service provides runway and flight tracking data that includes wind, = ground speed, TAS and ROC. The only flight data that=E2=80=99s needed to = be recorded was pressure altitude, OAT and IAS. This model was useful for converting test data to the standard data = required for the POH. For example we were able to do better than = commercial manuals by providing climb data for various weights and = speeds. For example I was able to generate the following climb and = cruise data versus weight. N304R CLIMB AND CRUISE@ 2500 RPM, FULL THROTTLE WITH CLIMB @ 135 = KIAS =20 WEIGHT LB CEILING* FT BHP % GPH CRUISE KTAS NM/GAL =20 2500 17200 54.3 11.5 197 17.1 =20 2900 15300 59.3 12.3 196 15.9 =20 3300 13300 64.7 13.2 195 14.8 =20 =C2=B7 ISA Altitude for 300 ft/min ROC=20 Carl=20 carlscheid@att.net ------=_NextPart_000_00B8_01CFC212.A21A0D90 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable

For phase 1 flight testing we developed a = spread sheet=20 model that tabulates performance versus altitude. Inputs included LIV = and test=20 parameters. Model performance was made to reflect test performance by = tweaking=20 lift efficiency, propeller efficiency and parasite drag coefficient. The = result=20 was a model specific for our normally aspirated N304R.  Application to a turbo version = would only=20 require the addition of engine altitude performance.

Data collection was made easy through use of = Cloud Ahoy.=20 This free service provides runway and flight tracking data that includes = wind,=20 ground speed, TAS and ROC. The only flight data that=E2=80=99s needed to = be recorded was=20 pressure altitude, OAT and IAS.

This model was useful for converting test data = to the=20 standard data required for the POH. For example we were able to do = better than=20 commercial manuals by providing climb data for various weights and = speeds. For=20 example I was able to generate the following climb and cruise data = versus=20 weight.

N304R CLIMB AND = CRUISE@ 2500=20 RPM, FULL THROTTLE WITH CLIMB @ 135 KIAS

WEIGHT = LB

CEILING* = FT

BHP = %

GPH

CRUISE = KTAS

NM/GAL

2500

17200

54.3

11.5

197

17.1

2900

15300

59.3

12.3

196

15.9

3300

13300

64.7

13.2

195

14.8

=C2=B7        =20 ISA = Altitude=20 for 300 ft/min ROC

Carl=20

carlscheid@att.net

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