 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
craigb(at)onthenet.com.au
Guest
|
 Posted: Fri Jul 26, 2013 3:00 pm Post subject: G Load testing |
 |
|
I have seen a few photos on the group over the years with
a/c inverted and bags of sand, concrete, gold coins etc stacked
evenly on the wings to simulate the G loading, question is how are
people supporting the weight for this test through the fuselage itself
obviously the top of the cockpit would be insufficient to take such a load
of what 8000+ pounds, assuming 6g x 1370lb, or do I have the math wrong on
this
my thoughts were it may be easier to keep the A/C upright and load the
weight
into the cockpit with the whole lot supported by cradle and a few extra
supports under each wing
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Europa-List |
|
|
|
| Back to top |
|
 |
grahamsingleton(at)btinte
Guest
|
| Posted: Sat Jul 27, 2013 12:46 am Post subject: G Load testing |
|
|
wrong thought Craig. It has to be done the standard way. Design load is 4.5 G (from dilute memory)
Don't try it without a qualified Inspector, easy to break something.
Graham
From: craig <craigb(at)onthenet.com.au>
To: europa-list(at)matronics.com
Sent: Saturday, 27 July 2013, 0:00
Subject: Europa-List: G Load testing
--> Europa-List message posted by: "craig" <craigb(at)onthenet.com.au (craigb(at)onthenet.com.au)>
I have seen a few photos on the group over the years with
a/c inverted and bags of sand, concrete, gold coins etc stacked
evenly on the wings to simulate the G loading, question is how are
people supporting the weight for this test through the fuselage itself
obviously the top of the cockpit would be insufficient to take such a load
of what 8000+ pounds, assuming 6g x 1370lb, or do I have the math wrong on
this
my thoughts were it may be easier to keep the A/C upright and load the
weight
into the cockpit with the whole lot supported by cradle and-> http://forums.matronics.comhttp://www.======================
[quote][b]
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Europa-List |
|
|
|
| Back to top |
|
|
craigb(at)onthenet.com.au
Guest
|
| Posted: Sat Jul 27, 2013 2:52 am Post subject: G Load testing |
|
|
Yes but doesn’t there have to be a 50% safety margin on g load
After all you could pull nearly 6 g in a turn (80 degrees bank) taking
Evasive action for example.
But back to the original question how does one support the a/c adequately for the testing in the inverted
position
From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of GRAHAM SINGLETON
Sent: Saturday, July 27, 2013 6:44 PM
To: europa-list(at)matronics.com
Subject: Re: G Load testing
wrong thought Craig. It has to be done the standard way. Design load is 4.5 G (from dilute memory)
Don't try it without a qualified Inspector, easy to break something.
Graham
From: craig <craigb(at)onthenet.com.au>
To: europa-list(at)matronics.com
Sent: Saturday, 27 July 2013, 0:00
Subject: G Load testing
--> Europa-List message posted by: "craig" <craigb(at)onthenet.com.au (craigb(at)onthenet.com.au)>
I have seen a few photos on the group over the years with
a/c inverted and bags of sand, concrete, gold coins etc stacked
evenly on the wings to simulate the G loading, question is how are
people supporting the weight for this test through the fuselage itself
obviously the top of the cockpit would be insufficient to take such a load
of what 8000+ pounds, assuming 6g x 1370lb, or do I have the math wrong on
this
my thoughts were it may be easier to keep the A/C upright and load the
weight
into the cockpit with the whole lot supported by cradle and-> http://forums.matronics.comhttp://www.======================
| Quote: | | http://www.matronics.com/Navigator?Europa-List |
0123456789
No virus found in this message.
Checked by AVG - www.avg.com
07/26/13
[quote][b]
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Europa-List |
|
|
|
| Back to top |
|
|
Gilles.Thesee(at)ac-greno
Guest
|
| Posted: Sat Jul 27, 2013 4:06 am Post subject: G Load testing |
|
|
craig a écrit :
| Quote: |
Yes but doesn’t there have to be a 50% safety margin on g load
Graig and all,
|
The 50 % margin is for calculation only, especially in a homebuilt.
Contrary to popular belief, the 4.5 g load for instance, is a
once-in-a-lifetime limit not to be inflicted on the airframe repeatedly.
Safe load is considered to be approximately 80% of certified load.
| Quote: | After all you could pull nearly 6 g in a turn (80 degrees bank) taking
Evasive action for example.
Any airplane can break in flight if mishandled.
|
It would take a really ham fisted pilot to reach as high as 6g.
Additionally in peacetime I would advise to only perform avoiding
actions 
Best regards,
--
Gilles
http://contrails.free.fr
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Europa-List |
|
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
