Today's Message Index:
----------------------
1. 12:35 AM - Re: Mandatory U.K. LAA permit directive. Shoot-Bolt stop (John Wighton)
2. 03:23 AM - Re: Re: Mandatory U.K. LAA permit directive. Shoot-Bolt stop (D McFadyean)
3. 12:09 PM - Re: Re: Mandatory U.K. LAA permit directive. Shoot-Bolt stop (timward)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Mandatory U.K. LAA permit directive. Shoot-Bolt stop |
I think simple CFD is great but think it unwise to distribute snap shot s as they
can be taken out of context. The Europa fuse and canopy Are classic in form
and will generate a range of differential pressures depending on speed, alpha,
beta and altitude.
The net lift on the door can be calculated using data from a full sweep. But that
just tells us what we already know - that doors do depart the aircraft if
the front pin disengages from the front socket.
In designing an alternate to the UglyMod, utilising a simple shear pin that is
inserted from inside, we retain the clean external shape of the aircraft.
It prevents the door opening enough to be ripped off.
Emergency opening of the canopy from outside is achieved with a pry bar.
Time will tell if the LAA is receptive.
--------
John Wighton
Europa XS trigear G-IPOD
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=505286#505286
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Mandatory U.K. LAA permit directive. Shoot-Bolt |
stop
My main concern with the external mod is that an enthusiastic passenger that is
not being 101% supervised will attempt to force the bolts against the new stop
and, in doing so, will buckle the internal pushrod resulting in undetected(?)
and diminished rear bolt engagement. Will the door still come unlatched?
At the very least, it still comes down to pre-flight checking that the door is
adequately latched.
Duncan McF
> On 17 December 2021 at 08:34 John Wighton <john@wighton.net> wrote:
>
>
>
> I think simple CFD is great but think it unwise to distribute snap shot s as
they can be taken out of context. The Europa fuse and canopy Are classic in
form and will generate a range of differential pressures depending on speed, alpha,
beta and altitude.
>
> The net lift on the door can be calculated using data from a full sweep. But
that just tells us what we already know - that doors do depart the aircraft if
the front pin disengages from the front socket.
>
> In designing an alternate to the UglyMod, utilising a simple shear pin that
is inserted from inside, we retain the clean external shape of the aircraft.
It prevents the door opening enough to be ripped off.
>
> Emergency opening of the canopy from outside is achieved with a pry bar.
>
> Time will tell if the LAA is receptive.
>
> --------
> John Wighton
> Europa XS trigear G-IPOD
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=505286#505286
>
>
>
>
>
>
>
>
>
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Mandatory U.K. LAA permit directive. Shoot-Bolt |
stop
=EF=BBAgree with Duncan and John. My alternative is a visual check of the
back bolt engaged with a red placard against the door rim. See photos below
. Not mandatory here in NZ due to the modification not being a Europa Aircr
aft Company mandatory mod.
Cheers,
Tim
Sent from my iPad
Tim Ward
12 Waiwetu Street,
Fendalton,
Christchurch, 8052
New Zealand.
ward.t@xtra.co.nz
021 0640221
> On 18/12/2021, at 12:30 AM, D McFadyean <ami-mcfadyean@talktalk.net> wrote
:
ktalk.net>
>
> My main concern with the external mod is that an enthusiastic passenger th
at is not being 101% supervised will attempt to force the bolts against the n
ew stop and, in doing so, will buckle the internal pushrod resulting in unde
tected(?) and diminished rear bolt engagement. Will the door still come unla
tched?
> At the very least, it still comes down to pre-flight checking that the doo
r is adequately latched.
>
> Duncan McF
>
>> On 17 December 2021 at 08:34 John Wighton <john@wighton.net> wrote:
>>
>>
>>
>> I think simple CFD is great but think it unwise to distribute snap shot s
as they can be taken out of context. The Europa fuse and canopy Are class
ic in form and will generate a range of differential pressures depending on s
peed, alpha, beta and altitude.
>>
>> The net lift on the door can be calculated using data from a full sweep.
But that just tells us what we already know - that doors do depart the airc
raft if the front pin disengages from the front socket.
>>
>> In designing an alternate to the UglyMod, utilising a simple shear pin th
at is inserted from inside, we retain the clean external shape of the aircr
aft. It prevents the door opening enough to be ripped off.
>>
>> Emergency opening of the canopy from outside is achieved with a pry bar.
>>
>> Time will tell if the LAA is receptive.
>>
>> --------
>> John Wighton
>> Europa XS trigear G-IPOD
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=505286#505286
==========================
=========
==========================
=========
==========================
=========
==========================
=========
==========================
=========
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|