poids-moment

English translation: moment weight

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
French term or phrase:poids-moment
English translation:moment weight
Entered by: Robin Levey
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21:22 Feb 18, 2018
French to English translations [PRO]
Tech/Engineering - Engineering: Industrial / Steam turbine blades
French term or phrase: poids-moment
This is a parameter to be measured for a LP steam turbine blade — NOT the entire turbine, but for each blade, individually, and statically.

I have found out that poids-moment is expressed in kg/m — the same units as are used to express torque; but I can't quite get my head round the idea of torque as a static measurement on a component?

I have found "weight mass moment", but very few instances of it, and all of them apparently from multi-lingual translated sites which don't inspire me with confidence.

Even allowing for minor syntax differences, I have not found anything at all on Termium, GdT, nor IATE — not to mention here on KudoZ!

There aren't that many examples of it on the 'Net even in FR, and I can find virtually no convincing refs. where it is meaningfully collocated with 'torque' in a bilingual context.

Can anyone with specialist knowledge of mechanics please help me out here, as my deadline is looming and I am rushing...

Thanks in advance!
Tony M
France
Local time: 09:05
moment weight
Explanation:
Explained here:

https://www.space-electronics.com/KnowHow/pan_weight_vs_mome...

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Note added at 26 mins (2018-02-18 21:49:33 GMT)
--------------------------------------------------

It has the same units as torque because it involves the apparent "weight" at the centre of gravity of the rotating blade, hence a mass term (kg) and a distance term (m), as distinct from the "pan weight" (dead-weight - kg only) of the blade when at rest.
Selected response from:

Robin Levey
Chile
Local time: 04:05
Grading comment
Thanks a lot Robin! This is indeed the correct term in my context, as validated by the end customer.
Your explanations have been very helpful for me in order to try and grasp these concepts more clearly.
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +3moment weight
Robin Levey
Summary of reference entries provided
refs.
Rachel Fell

Discussion entries: 8





  

Answers


22 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +3
moment weight


Explanation:
Explained here:

https://www.space-electronics.com/KnowHow/pan_weight_vs_mome...

--------------------------------------------------
Note added at 26 mins (2018-02-18 21:49:33 GMT)
--------------------------------------------------

It has the same units as torque because it involves the apparent "weight" at the centre of gravity of the rotating blade, hence a mass term (kg) and a distance term (m), as distinct from the "pan weight" (dead-weight - kg only) of the blade when at rest.

Robin Levey
Chile
Local time: 04:05
Native speaker of: Native in EnglishEnglish
PRO pts in category: 45
Grading comment
Thanks a lot Robin! This is indeed the correct term in my context, as validated by the end customer.
Your explanations have been very helpful for me in order to try and grasp these concepts more clearly.

Peer comments on this answer (and responses from the answerer)
agree  Rachel Fell: Was about to answer with the same term - will post other refs. below
2 mins

agree  philgoddard
18 mins

agree  B D Finch
20 hrs

neutral  Daryo: but your explanation is wrong - weight is a force measured in kgf (kilogramme-force) as opposed to mass [quantity of matter] measured in plain kg (kilogramme) // the difference: in space your are "weight-less" but not "mass-less" ...
21 hrs

neutral  chris collister: See Space Electronics' own definition of "moment weight" but note discussion above of mass vs. weight!
1 day 30 mins
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Reference comments


26 mins peer agreement (net): +1
Reference: refs.

Reference information:
https://www.space-electronics.com/contentAssets/...Papers/Ne...
Space Electronics has designed a special static balance machine to measure turbine blade moment. Previously this task has been accomplished using knife edge and load ... This paper discusses the various steps in the process of balancing a turbine rotor. The .... identical to the moment weight of the blade 180 o away .

https://tinyurl.com/ybslo86l

50 ton Skoda lathe, Schenck balancing machines, conventional milling machines, blade tip grinding machine, Schenck moment weight balancing machine, welding machines, radial drilling machine, a spare parts depot, along with 2 overhead cranes with a load bearing capacity of 60 and 15 tonnes each

http://www.corrtechenergy.com/rotor_repair_overhaul_services

Rachel Fell
United Kingdom
Native speaker of: Native in EnglishEnglish
Note to reference poster
Asker: Many thanks, Rachel, for finding those very informative and totally relevant references for me!


Peer comments on this reference comment (and responses from the reference poster)
agree  philgoddard
13 mins
  -> Thank you Phil :-)
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