Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Tue, 10 Aug 2004 09:28:50 -0400 Message-ID: X-Original-Return-Path: Received: from [68.89.254.181] (HELO sdf1.mail.taturbo.com) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP id 358949 for lml@lancaironline.net; Tue, 10 Aug 2004 01:45:38 -0400 Received-SPF: none receiver=logan.com; client-ip=68.89.254.181; envelope-from=gwbraly@gami.com X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C47E9D.AEB67598" Subject: Some data, please ? X-Original-Date: Tue, 10 Aug 2004 00:48:37 -0500 X-Original-Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Some data, please ? Thread-Index: AcR+gP9mVvVHAasIQ1C67rSAk3GQOQAG+Ttw From: "George Braly" X-Original-To: "Lancair Mailing List" This is a multi-part message in MIME format. ------_=_NextPart_001_01C47E9D.AEB67598 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 =20 For all of you adventuresome experimental airplane/engine type pilots: =20 =20 For some very peculiar reasons, it would be very helpful if somebody with a IV-P could collect a very specific piece of data for me. =20 I need somebody that has a JPI or another system that can record data, and really, it needs to be at the JPI 2 second rate, or better. =20 I need the full boat data set, FFlow, MP, RPM, TIT, eetc. =20 Scenario: =20 Full power and full RICH at 21 to 23000 feet. =20 =20 I need you to be in the climb and then do a hard push over for at least 5 seconds, during which you clearly go to at least -0.5 G. =20 The idea is to get the oil in the sump to unport the oil pump. =20 This should cause the oil pressure to momentarily drop and that should cause the wastegate to spring load to the OPEN position and the turbo ramp down. =20 The question is, will the engine a) stop, and b), if it does stop, will it restart without any pilot action, after the oil pressure resumes, or will the engine be so rich that it will not restart until the pilot pulls the mixture to idle and then puts the mixture back in - - smoothly. =20 Then I need you to repeat this test, twice more. =20 Once at normal cruise power setting. =20 And another time at with the throttle set to idle when you do the push over. =20 =20 Then it would be really nice if you could send me the data file download !!! =20 A short note as to your results would be helpful, and maybe of some interest to the members of the list. =20 I will then evaluate this and give a report of the findings and why they are significant, or otherwise. =20 If you have questions, I will be glad to answer them. =20 Thanks, George =20 PS. You will want to be on O2, as the cabin will likely depressurize. You might even want to depressurize the cabin in advance of the maneuver, just so that it will not be distracting. =20 ------_=_NextPart_001_01C47E9D.AEB67598 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

For all of you adventuresome experimental airplane/engine type pilots:

For some very peculiar = reasons, it would be very helpful if somebody with a IV-P could collect a very specific piece of data for me.

I need somebody that has a JPI or = another system that can record data, and really, it needs to be at = the JPI 2 second rate, or better.

I need the full boat data = set, FFlow, MP, RPM, TIT, eetc.

Scenario:

Full power and full RICH at = 21 to 23000 feet.

I need you to be in the climb and = then do a hard push over for at least 5 seconds, during which you clearly = go to at least -0.5 G.

The idea is to get the oil in the = sump to unport the oil pump.

This should cause the oil pressure = to momentarily drop and that should cause the wastegate to spring load to = the OPEN position and the turbo ramp down.

The question is, will the = engine a) stop, and b), if it does stop, will it restart without any pilot = action, after the oil pressure resumes, or will the engine be so rich that = it will not restart until the pilot pulls the mixture to idle and then puts = the mixture back in - - smoothly.

Then I need you to repeat this = test, twice more.

= Once at normal cruise power setting.

= And another time at with the throttle set to idle when you do the push = over.

= Then it would be really nice if you could send me the data file = download !!!

= A short note as to your results would be helpful, and maybe of some interest to the members of the list.

= I will then evaluate this and give a report of the findings and why they = are significant, or otherwise.

If you have questions, I will = be glad to answer them.

Thanks, = George

PS. You will want to be on = O2, as the cabin will likely depressurize. You might even want to depressurize the cabin in advance of the maneuver, just so that it = will not be distracting.

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