X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 15 Nov 2010 21:20:57 -0500 Message-ID: X-Original-Return-Path: Received: from [69.146.254.20] (HELO crmtest.arilabs.net) by logan.com (CommuniGate Pro SMTP 5.3.10) with ESMTP id 4579573 for lml@lancaironline.net; Mon, 15 Nov 2010 09:05:49 -0500 Received-SPF: none receiver=logan.com; client-ip=69.146.254.20; envelope-from=kevin@arilabs.net Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CB84CE.1F46FDA1" Subject: RE: [LML] Re: iPad use in the cockpit X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 X-Original-Date: Mon, 15 Nov 2010 07:05:12 -0700 X-Original-Message-ID: <3E1C96B95693C640B0AC2F59D2500F3B0FDDDB@crmtest.arilabs.net> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [LML] Re: iPad use in the cockpit Thread-Index: AcuEwW0wOKmPsOG1TwO8sWmAU0KZjQACxXHw From: "Kevin Stallard" X-Original-To: "Lancair Mailing List" This is a multi-part message in MIME format. ------_=_NextPart_001_01CB84CE.1F46FDA1 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hey Chris, =20 Dissipating heat from memory isn't really factor compared to the processor itself. I do not know the memory architecture of the iPad, but most modern designs support multiple banks of memory in that when a memory transaction is occurring, only a portion of the actual memory chips are working. The memory chips do not give off heat unless they are being used. They use very little power by themselves, especially when they are only self refreshing. They certainly will add to the overall heat of the unit if accessed frequently, but the thing you need to watch out for is the graphics processor and the CPU itself.=20 =20 The thing that will heat up your iPad the most is a busy processor. So you have can all the memory you want and even powerful and processor intensive applications loaded onto your iPad, and still be okay if you don't use them at high altitudes. In other words, get the iPad that you want, so that you can do other things while on the ground that are valuable to you, but then while you are in the air, and above 10,000 feet, don't watch HD movies or other processor intensive functions, and it will be okay. =20 Kevin =20 =20 ________________________________ From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Chris Zavatson Sent: Monday, November 15, 2010 5:34 AM To: lml@lancaironline.net Subject: [LML] Re: iPad use in the cockpit =20 For those that have already taken the plunge, how much memory is recommended for airplane only uses such as Foreflight plus perhaps a handful of other aviation charting services. Foreflight lists 18.7 Mb required. It sounds like the smallest of IPad capacities would be sufficient for aviation only use. Thinking thermally, I would guess that less memory would take less power to drive. =20 I'm also thinking ahead to active cooling for the installation. -still waffling but getting closer, Chris Zavatson =20 ------_=_NextPart_001_01CB84CE.1F46FDA1 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hey = Chris,

Dissipating heat from memory = isn’t really factor compared to the processor itself. I do not know the = memory architecture of the iPad, but most modern designs support multiple banks = of memory in that when a memory transaction is occurring, only a portion of = the actual memory chips are working. The memory chips do not give off = heat unless they are being used. They use very little power by themselves, = especially when they are only self refreshing. They certainly will add to the = overall heat of the unit if accessed frequently, but the thing you need to watch out for = is the graphics processor and the CPU itself.

The thing that will heat up your = iPad the most is a busy processor. So you have can all the memory you want = and even powerful and processor intensive applications loaded onto your iPad, and = still be okay if you don’t use them at high altitudes. In other = words, get the iPad that you want, so that you can do other things while on the ground = that are valuable to you, but then while you are in the air, and above 10,000 = feet, don’t watch HD movies or other processor intensive functions, and = it will be okay.

Kevin

From: = Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Chris Zavatson
Sent: Monday, November = 15, 2010 5:34 AM
To: = lml@lancaironline.net
Subject: [LML] Re: iPad = use in the cockpit

For those that have already taken the plunge, how = much memory is recommended for airplane only uses such as Foreflight plus = perhaps a handful of other aviation charting services. Foreflight lists 18.7 = Mb required. It sounds like the smallest of IPad = capacities would be sufficient for aviation only use. Thinking thermally, I would = guess that less memory would take less power to drive. =

I'm also thinking ahead to active cooling for the installation.

-still waffling but getting = closer,

Chris Zavatson

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