Return-Path: <marv@lancaironline.net>
Sender: "Marvin Kaye" <marv@lancaironline.net>
To: lml@lancaironline.net
Date: Tue, 21 Dec 2004 18:06:28 -0500
Message-ID: <redirect-575922@logan.com>
X-Original-Return-Path: <Christopher.Zavatson@udlp.com>
Received: from mta-out-1.udlp.com ([207.109.1.8] verified)
  by logan.com (CommuniGate Pro SMTP 4.2.5)
  with ESMTP id 575890 for lml@lancaironline.net; Tue, 21 Dec 2004 17:41:20 -0500
Received-SPF: pass
 receiver=logan.com; client-ip=207.109.1.8; envelope-from=Christopher.Zavatson@udlp.com
Received: from asdmngwia.mpls.udlp.com (asdmngwia.mpls.udlp.com [10.1.62.22])
	by mta-out-1.udlp.com (8.12.10/8.12.10) with ESMTP id iBLKfTu2021844
	for <lml@lancaironline.net>; Tue, 21 Dec 2004 14:41:39 -0600
Received: from DM-MN-06-MTA by asdmngwia.mpls.udlp.com
	with Novell_GroupWise; Tue, 21 Dec 2004 16:40:27 -0600
X-Original-Message-Id: <s1c851fb.075@asdmngwia.mpls.udlp.com>
X-Mailer: Novell GroupWise Internet Agent 6.0.2
X-Original-Date: Tue, 21 Dec 2004 16:40:14 -0600
From: "Christopher Zavatson" <Christopher.Zavatson@udlp.com>
X-Original-To: <lml@lancaironline.net>
Subject: [LML] Re: 320/360 gear extension failure - a theory
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

Scott,
<<Can the rapid extension of the nose  gear (as pushed by the 
spring) cause a pressure problem in the "spool" valve in  the pump?>>
Yes.
The two "imbalances" are related in that the return fluid can't get out
of the way fast enough.  During extension the gear cylinders compete
with the door cylinders in trying to return fluid to the pump.  The door
cylinders loose because they, with their relatively small springs,
cannot exert the same fluid pressure as the gear+gravity+air spring. 
The gas spring  on the nose gear, like gravity contributes to the
problem, in that, the gas spring together with the nose cylinder acts
like a pump.
Chris