Previous in Forum: Hitting Absolute Zero   Next in Forum: Is the A-10 Warthog Obsolete?
Close
Close
Close
13 comments
Active Contributor

Join Date: Feb 2014
Posts: 15

Aircraft Landing Gear Shock Absorber Design

02/25/2014 11:04 AM

I wonder if anyone can send or show me the calculation or formula to obtain required dimensions for design of shock absorber?

Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Power-User

Join Date: Aug 2010
Location: Wales, UK
Posts: 387
Good Answers: 18
#1

Re: aircraft landing gear shock absorber design

02/25/2014 11:17 AM

Hi dannnnny,

Are you designing/building aircraft landing gear or is it just a shock absorber application?

www.acecontrols.com are "masters" at the design & manufacture of Linear Decelerators for all types and sizes of application.

Give them a try.

Best of luck

John

__________________
Best advice I can give as you get older "Never miss an opportunity to relieve yourself"
Reply
Guru

Join Date: Oct 2008
Posts: 42293
Good Answers: 1662
#2

Re: aircraft landing gear shock absorber design

02/25/2014 11:26 AM

Usually, repeating questions doesn't get you a different response.

This "project" is for what, again?

Reply Off Topic (Score 5)
Power-User

Join Date: Aug 2010
Location: Wales, UK
Posts: 387
Good Answers: 18
#3
In reply to #2

Re: aircraft landing gear shock absorber design

02/25/2014 11:37 AM

Hi lyn,

I should be more aware by now and check out the OP before jumping in with a comment.

Best regards,

John

__________________
Best advice I can give as you get older "Never miss an opportunity to relieve yourself"
Reply Off Topic (Score 5)
Guru

Join Date: Oct 2008
Posts: 42293
Good Answers: 1662
#4
In reply to #3

Re: aircraft landing gear shock absorber design

02/25/2014 11:59 AM

John,

Please feel free to contribute any time.

Sometimes it's difficult to tell what the motivation for questions is, and if they are a student looking for an easy out, they are only cheating themselves.

Cheers.

Reply Off Topic (Score 6)
Guru

Join Date: Dec 2008
Location: Cd. Juarez, Chihuahua, Mexico.
Posts: 1023
Good Answers: 69
#5
In reply to #4

Re: aircraft landing gear shock absorber design

02/25/2014 5:05 PM

I'd be happier if he was cheating rather than actually bulding the thing.

Besides, who would be relied on to do the task without being almost a genius, or at least a highly qualified professional ?.

__________________
No hay conocimiento ni herramienta que sustituya al sentido comun.
Reply Score 1 for Off Topic
Guru

Join Date: Oct 2008
Posts: 42293
Good Answers: 1662
#6
In reply to #5

Re: aircraft landing gear shock absorber design

02/25/2014 5:12 PM

In the first thread, OP says it's his "project".

To me, that means school work.

First, it was, "main strut and wheel and torsion bars", now, it's shock absorber.

Perhaps he has scaled back the project.

Oh well.

Reply Off Topic (Score 6)
Guru

Join Date: Oct 2008
Posts: 42293
Good Answers: 1662
#8
In reply to #6

Re: aircraft landing gear shock absorber design

02/25/2014 5:59 PM

My goal is not to make you happy.

Good luck with your "project".

Reply Off Topic (Score 6)
Guru

Join Date: Jun 2006
Location: Ottawa Canada
Posts: 1975
Good Answers: 117
#9
In reply to #5

Re: aircraft landing gear shock absorber design

02/26/2014 11:31 AM

He might not be "cheating", just trying to use forums and social media the way it is supposed to be used. I just hope this question is not texted from his exam table. THAT would be unfortunate but not quite as unfortunate if he was texting this from his work station.

__________________
If it was easy anybody could do it.
Reply
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 20964
Good Answers: 780
#7

Re: Aircraft Landing Gear Shock Absorber Design

02/25/2014 5:16 PM

There is no such thing as "the" formula; there are several formulas that might apply, each involving some assumptions. F = ma is perhaps the most basic and critical.

__________________
In vino veritas; in cervisia carmen; in aqua E. coli.
Reply Score 1 for Good Answer
Power-User
New Zealand - Member - Member Australia - Member - Member

Join Date: Oct 2008
Location: Auckland, New Zealand
Posts: 463
Good Answers: 43
#10

Re: Aircraft Landing Gear Shock Absorber Design

02/26/2014 7:05 PM

If you are looking at that detail, you need to give a clue about your detail.

These ones are all that is needed for light aircraft and microlights. You will need to define the forces before you can add the material, dimensions, etc, but they will work.

How you will arrange the shock absorber component will depend on how you may want to incorporate the load-bearing component.

What type of landing gear are we guessing about here ?

Reply
Active Contributor

Join Date: Feb 2014
Posts: 15
#12
In reply to #10

Re: Aircraft Landing Gear Shock Absorber Design

03/04/2014 2:18 PM

Thank you for the reply first of all:)
I'm doing project on gear of boeing 777, so it's six wheel based. I'm not expecting (dont think even I can) to make complicated real landing gear, but simplified one which contains main strut, wheel, and tyre. so planning to design simple, but functional landing gear. most of calculations are done, but i'm having difficulties in sizing components of landing gear. like size of shock absorber stuff..

Reply
Guru
United States - Member - Charter Member Engineering Fields - Instrumentation Engineering - Charter Member

Join Date: Mar 2008
Location: The People's Republic of Massachusetts
Posts: 1946
Good Answers: 73
#11

Re: Aircraft Landing Gear Shock Absorber Design

02/26/2014 10:20 PM

Aircraft landing gear assembly construction is most certainly a mature technology. Millions of man hours and billions of $$ has provided us with the safety we enjoy today.

Some years ago I was involved with materials testing for large forged landing gear components. Interestingly, it has been determined, (certainly not by me), that the greatest stresses placed on these systems are during ground operations, (taxiing). So there is a lot to consider.

http://www.faa.gov/regulations_policies/handbooks_manuals/aircraft/amt_airframe_handbook/media/ama_Ch13.pdf

The link above will provide you with a basic guide to answer the questions you seek. After you study up, (there are many, many sites on this topic), feel free to post your questions here.

__________________
I go into every human encounter expecting to be framed for a crime I didn't commit. Dilbert, 2013
Reply
Member

Join Date: Feb 2014
Posts: 9
#13

Re: Aircraft Landing Gear Shock Absorber Design

03/11/2014 9:26 AM

There are many formulas which work according to conditions but I am mentioning you a common formula for calculating the dimensions of any Aircraft Landing Gear design.

For Wheel assemblies, including rotating break parts

Radius of gyration= 0.40*bead ledge diam D

And for more details you can refer this link: http://goo.gl/opx026

Reply
Reply to Forum Thread 13 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Copy to Clipboard

Users who posted comments:

AussieBob (1); Bricktop (1); dannnnny (1); DavidHeiman (1); jesw55 (2); lyn (4); Tornado (1); Yahlasit (1); Yusef1 (1)

Previous in Forum: Hitting Absolute Zero   Next in Forum: Is the A-10 Warthog Obsolete?

Advertisement