X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 11 Feb 2009 18:01:07 -0500 Message-ID: X-Original-Return-Path: Received: from col0-omc3-s5.col0.hotmail.com ([65.55.34.143] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTP id 3488668 for lml@lancaironline.net; Wed, 11 Feb 2009 17:23:17 -0500 Received-SPF: pass receiver=logan.com; client-ip=65.55.34.143; envelope-from=bill_kennedy_3@hotmail.com Received: from COL108-W29 ([65.55.34.136]) by col0-omc3-s5.col0.hotmail.com with Microsoft SMTPSVC(6.0.3790.3959); Wed, 11 Feb 2009 14:22:38 -0800 X-Original-Message-ID: X-Original-Return-Path: bill_kennedy_3@hotmail.com Content-Type: multipart/alternative; boundary="_2058048b-1aca-46e7-9b6c-e05864cde6e1_" X-Originating-IP: [71.111.120.17] From: Bill Kennedy X-Original-To: Subject: RE: [LML] Legacy damaged X-Original-Date: Wed, 11 Feb 2009 14:22:38 -0800 Importance: Normal In-Reply-To: References: MIME-Version: 1.0 X-OriginalArrivalTime: 11 Feb 2009 22:22:38.0552 (UTC) FILETIME=[3F3A8580:01C98C97] --_2058048b-1aca-46e7-9b6c-e05864cde6e1_ Content-Type: text/plain; charset="iso-8859-7" Content-Transfer-Encoding: quoted-printable If your car hood come open at highway speeds=2C you are in real trouble sin= ce it will come all the way open against your windshield. If your forward h= inged Lancair canopy unlatches in flight=2C it opens an inch or so and stay= s there. If you had two people in the plane=2C you could probably close it = easily=2C but it'd take an army to force it further open. Do you really nee= d a latch? To: lml@lancaironline.net Date: Wed=2C 11 Feb 2009 13:02:41 -0500 From: wfhannahan@yahoo.com Subject: [LML] Legacy damaged 2 My thoughts have been running similar to Jim=A2s=2C but rather than make it a checklist item it would be automatic=2C like the safety catch on a car hood= . =20 To enter the plane unlatch the canopy in the usual way=2C raise it 1-2 inches=2C sli= p your fingers under the edge to release the safety catch=2C open the canopy all t= he way. =20 During taxi the safety catch would automatically engage=2C yet allow ventilation. = If the pilot takes off the latch would prevent the large excursions=2C 6-12 inches= =2C which seem to be part of a feedback loop producing the large oscillations. =20 Since it is automatic it is not a checklist item and cannot be forgotten. =20 Regards=2C Bill Hannahan =20 wfhannahan@yahoo.com --- On Tue=2C 2/10/09=2C Jim Scales wrote: From: Jim Scales Subject: [LML] Re: Legacy damaged To: lml@lancaironline.net Date: Tuesday=2C February 10=2C 2009=2C 11:32 AM =20 Being an ES flyer I am not really qualified to enter this thread but I will= =20 anyway. Just a tinkerer's thoughts. =20 An item for a checklist on the hinged canopy could be "Check Canopy=20 Safety Catch". It would refer to a safety chain (or cable) very=20 similar to that which is used for security on a door in a hotel. I'm=20 sure the assembly would need to be stronger but the design could be=20 similar=2C very simple and pretty well fool proof (as long as it is connect= ed=2C of=20 course). =20 I would think this would control the problem=2C if the latch=20 releases=2C by holding the canopy to maximum opening of a couple of=20 inches. No need to attempt to close it. No electronics. No chance of=20 failure of micro switches=2C lights or horns. Very inexpensive. =20 It does not insure that the canopy latches are properly operated but=2C if= =20 the reports of controllability when the canopy pops are correct=2C it would= =20 prevent serious problems and allow the plane to be landed safely. It would= =20 also function in the case of a late canopy release such as in cruise=2C in = which=20 case warning systems would be of little value. =20 If this line of thought has been followed in the past=2C and found to be a= =20 non-solution=2C I apologize for taking up space. =20 Just a thought............. =20 Jim Scales =20 =20 ----- Original Message -----=20 From: Bill Kennedy=20 To: lml@lancaironline.net=20 Sent: Monday=2C February 09=2C 2009 11:49=20 PM Subject: [LML] Legacy damaged =20 Forget about winch systems=2C etc. for the canopy. If it comes=20 open in-flight=2C ignore it and land the plane as soon as practical=2C cl= ose the=20 canopy and go about your business.=20 --_2058048b-1aca-46e7-9b6c-e05864cde6e1_ Content-Type: text/html; charset="iso-8859-7" Content-Transfer-Encoding: quoted-printable If your car hood come open at highway speeds=2C you are in real trouble sin= ce it will come all the way open against your windshield. If your forward h= inged Lancair canopy unlatches in flight=2C it opens an inch or so and stay= s there. If you had two people in the plane=2C you could probably close it = easily=2C but it'd take an army to force it further open. Do you really nee= d a latch?

To: lml@lancaironline.net
Date= : Wed=2C 11 Feb 2009 13:02:41 -0500
From: wfhannahan@yahoo.com
Subjec= t: [LML] Legacy damaged

2

My thoughts have been running similar to Jim=A2s=2C but rather than make it a checklist item it would be automatic=2C like the safety catch on a car hood= .

 =3B

To enter the plane unlatch the canopy in the usual way=2C raise it 1-2 inches=2C sli= p your fingers under the edge to release the safety catch=2C open the canopy all t= he way.

 =3B

During taxi the safety catch would automatically engage=2C yet allow ventilation. = If the pilot takes off the latch would prevent the large excursions=2C 6-12 inches= =2C which seem to be part of a feedback loop producing the large oscillations.<= /span>

 =3B

Since it is automatic it is not a checklist item and cannot be forgotten.<= /p>

 =3B



Regards=2C
Bill Hannahan

wfhannahan@yahoo.com

--- On Tue=2C 2/10/09=2C Jim Scales <=3Bjoscales98@hotma= il.com>=3B wrote:
From: Jim Scales <=3Bjoscales98@hotmail.com>=3B
S= ubject: [LML] Re: Legacy damaged
To: lml@lancaironline.net
Date: Tues= day=2C February 10=2C 2009=2C 11:32 AM

=20
Being an ES flyer I am not really qualified to enter this thread but I= will=20 anyway. =3BJust a tinkerer's thoughts.
 =3B
An item for =3Ba checklist on the hinged canopy could be "Check Ca= nopy=20 Safety Catch". =3B It would refer to a safety chain (or cable) =3Bv= ery=20 similar to that which is used =3Bfor security on a door in a hotel.&nbs= p=3BI'm=20 sure the assembly =3Bwould need to be stronger =3Bbut the design co= uld be=20 similar=2C very simple and pretty well fool proof (as long as it is connect= ed=2C of=20 course).
 =3B
I =3Bwould think this =3Bwould control the =3Bproblem=2C i= f the latch=20 releases=2C by holding the canopy to maximum opening of a couple of=20 inches. =3BNo need to attempt to close it. No electronics. =3B No c= hance of=20 failure of micro switches=2C lights or horns. =3B Very inexpensive.
 =3B
It does not insure that the canopy latches are properly operated but= =2C if=20 the reports of controllability when the canopy pops are correct=2C =3Bi= t would=20 prevent serious problems and allow the plane to be landed safely. =3B I= t would=20 also function in the case of a late canopy release such as in cruise=2C in = which=20 case warning systems would be of little value.
 =3B
If this line of thought has been followed in the past=2C and found to = be a=20 non-solution=2C I apologize for taking up space.
 =3B
Just a thought.............
 =3B
Jim Scales
 =3B
 =3B
= ----- Original Message -----
= From: Bill Kennedy
= Sent: Monday=2C February 09=2C 2009 11:49=20 PM
= Subject: [LML] Legacy damaged

Forget about winch systems=2C etc. for the canopy. If it c= omes=20 open in-flight=2C ignore it and land the plane as soon as practical=2C cl= ose the=20 canopy and go about your business.

= --_2058048b-1aca-46e7-9b6c-e05864cde6e1_--