X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 09 Jul 2007 13:39:27 -0400 Message-ID: X-Original-Return-Path: Received: from mail10.tpgi.com.au ([203.12.160.147] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTPS id 2166059 for lml@lancaironline.net; Sun, 08 Jul 2007 23:13:17 -0400 Received-SPF: pass receiver=logan.com; client-ip=203.12.160.147; envelope-from=domcrain@tpg.com.au X-TPG-Antivirus: Passed Received: from CRAIN (60-241-193-89.static.tpgi.com.au [60.241.193.89]) by mail10.tpgi.com.au (envelope-from domcrain@tpg.com.au) (8.13.6/8.13.6) with ESMTP id l693CTAZ010149 for ; Mon, 9 Jul 2007 13:12:35 +1000 From: "Dominic V Crain" X-Original-To: "'Lancair Mailing List'" Subject: Re: TSIO-550 turbine inlet probes X-Original-Date: Mon, 9 Jul 2007 13:11:53 +1000 X-Original-Message-ID: <000e01c7c1d6$e79210a0$0202a8c0@CRAIN> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000F_01C7C22A.B947BD90" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6822 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 Thread-Index: AcfB1VC7IwPcQhBpQXCO8C1ydOuvNgAAG4Eg Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_000F_01C7C22A.B947BD90 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit "The TIT GAS is cooler than the exhaust GAS... it's further down the line... it's had time to cool more." HUH? Now- let's see. TIT's are cooler than EGT's? Hmm. So, on that premise, the engine is putting more energy into the gas than it's extracting. Which would mean the prop is driving the engine. Nah! I reckon the old theory still works. Burn the gas, measure the TIT, punch the expanding gas through the turbine. Pull out the heat energy to drive the compressor then the prop. Measure the EGT, and PRESTO, the EGT is COOLER that the TIT. Guaranteed. Or Allison's rear end doesn't point backwards! Regards Dom Crain VH-CZJ ------=_NextPart_000_000F_01C7C22A.B947BD90 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

“The TIT GAS is = cooler than the exhaust GAS...  it's further down the line...  it's had = time to cool more.”

 

HUH?

Now-  let’s = see.

TIT’s are cooler than = EGT’s?

Hmm.

So, on that premise, the engine is = putting more energy into the gas than it’s extracting.

Which would mean the prop is = driving the engine.

Nah!

I reckon the old theory still = works.

Burn the gas, measure the TIT, = punch the expanding gas through the turbine. Pull out the heat energy to drive the = compressor then the prop. Measure the EGT, and PRESTO, the EGT is COOLER that the = TIT.

Guaranteed. Or Allison’s = rear end doesn’t point backwards!

Regards

Dom Crain

VH-CZJ

 

 

 

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