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Triangle montant
Apr 25, 2015 11:08
9 yrs ago
French term

Alimentation autonome

French to English Tech/Engineering Engineering (general)
From a patent on the electrical power supply system of an aircraft:

- Alimentation autonome en conditions normales

Lorsque l’aéronef est autonome par exemple en vol ou au sol (avion au roulage), le réseau d’alimentation électrique est alimenté par les groupes de puissance principaux MPS1, MPS2 qui alimentent respectivement les bus de distribution de la partie gauche et la partie droite du réseau d’alimentation électrique du fait des connexions des contacteurs.

Termium gives 'interruptible power supply' for 'alimentation autonome' but there are practically zero hits for this on Google. Also, how then do I translate 'autonome' in the sense of 'When the aircraft is...'

TIA! :)
Proposed translations (English)
4 +5 stand-alone power supply
4 +1 internal power supply
4 +1 Autonomous power supply
5 self-powered supply

Discussion

Johannes Gleim May 7, 2015:
@ Daryo Sorry, I skipped the termination er from "count" while focusing on the terms "alimentation autonome" and "interruptible power supply", judged as “dodgy”, even you consider Termium being reliable.
Daryo May 7, 2015:
@Johannes Gleim "to count" is not what I said but to counter [verb, not the noun "a counter"] as in "to respond to the problem of"

counter ˈkaʊntə
verb
verb: counter; 3rd person present: counters; past tense: countered; past participle: countered; gerund or present participle: countering
1.
speak or act in opposition to.
"the second argument is more difficult to counter"
respond to hostile speech or action.

"the possibility of the enemy being able to counter with similar missiles was remote"

synonyms: parry, hit back at, answer, respond to, retort to, contradict, negate; More
antonyms: support

https://www.google.co.uk/search?q=to counter meaning

Also, while there are more than few hastily cobbled together glossaries, Termium is certainly not of them. But even with a good glossary like Termium, the fundamental requirement of finding a term that is appropriate in the context of the specific ST still remains.
Tony M Apr 29, 2015:
@ Johannes I think there is a degree of incomprehension going on here... and I also think we have strayed a long xway from the original term.
Johannes Gleim Apr 29, 2015:
@ Tony I asked Daryo, why that system can count interruptions in power supply (and whether he can explain it and/or whether he has some references to illustrate it). No reply so far.
Tony M Apr 29, 2015:
@ Johannes There is a worrying dearth of BILINGUAL references for 'interruptible power supply" + "alimentation autonome" — a quick search returned only 98 Google hits, suggesting that the expression is rare or erroneous.

Of those few hits, some refer back to this question, while several others refer back to a single original source. Others are simply fortuitous...

In all, I was unable (with a quick search) to find any technically-defined and backed-up instances in relevant contexts where these two terms are a valid translation of each other. I'd certainly want to look into it much more deeply before risking using such a translation...
Johannes Gleim Apr 29, 2015:
@ Daryo It's not you who stated "Yes, the Terminium entry seems well dodgy". A quick look at that entry proved its reliability. And the internet has a lot of occurrences.

1 Aeronautics interruptible power supply alimentation autonome 2 alimentation automatique avec coupure
http://fr.tureng.com/en/interruptible power supply
IPS
INTERRUPTIBLE POWER SUPPLY
Alimentation autonome INTEGRATED PARTICULES SEPARATOR
http://www.babylon.com/definition/INTERRUPTIBLE_POWER_SUPPLY...

Firm services, also called uninterruptible services, are services, such as electricity and natural gas supplies, that are intended to be available at all times during a period covered by an agreement. … The cost per unit with this service is called a firm rate or uninterruptible rate. The opposite of firm service is non-firm service, also called interruptible service or as-available service. The cost per unit for this service is called a non-firm rate or interruptible rate. The interruptible load is the portion of a utility's load that comes from customers with interruptible service.
http://www.cyclopaedia.fr/wiki/Interruptible_power

Is that the reason you mention "counting interruptions"?
Daryo Apr 28, 2015:
the point is not that the term "interruptible power supply" is in any way dodgy or rare;

it simply implies that it's a system that can counter interruptions in power supply; i.e. a system designed to solve a different kind of problem from the problem of being tethered or not to some external source of power.
Johannes Gleim Apr 27, 2015:
Is "interruptible power supply" dodgy or rare? I don't think so.

interruptible power supply CORRECT
groupe électrogène de secours CORRECT, MASC
groupe électrogène de relève CORRECT, MASC
alimentation autonome CORRECT, FÉM
http://www.btb.termiumplus.gc.ca/tpv2alpha/alpha-fra.html?la...

612.000 Ghits for "interruptible power supply" "-uninterruptible"
https://www.google.de/?gws_rd=ssl#q="interruptible power sup...

e.g.

Interruptible Power Supply (IPS) is an AC battery-supported power supply device intended to provide a backup source of AC power with very short power interruption to the load.
http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=...
Johannes Gleim Apr 26, 2015:
self-powered is the English term already used in the context. See http://www.google.com/patents/WO2014106712A1?cl=en&hl=de
Tony M Apr 26, 2015:
@ Johannes No further context is really necessary. This is talking about the aircraft being 'self-contained' for power — i.e. not connected to a ground supply. It is not talking about any one specific item of equipment, but rather, the general concept. The FR word is used very much in this way, whereas the same word in EN tends to be used in a somewhat narrower range of circumstances.
Johannes Gleim Apr 26, 2015:
@ Claire All air-plane safety-related systems must be autonomous and redundant. But 'autonomous' is a generic term and gives no information about the type of device and system layout. All translations proposed so far cover differ aspects.

We need more context about the interactions with other systems.

Proposed translations

+5
9 mins
Selected

stand-alone power supply

It's often a little tricky to find a good way to translate 'autonome', as it can have so many nuances of meaning.

Here, in essence, it just means 'independent' — the plane is autonomous, inasmuch as it does not depend on a ground supply, for example.

I think in you second instance, you might even get away with using 'autonomous', even though the literal translation is so often a faux ami, since it is used in a far more restricted range of meanings than the FR term.

I would certainly be very wary of that Termium entry, which is quite hard to imagine ever being a correct translation, irrespective of the context! But in any case, clearly not applicable in your particular case.

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Note added at 20 heures (2015-04-26 07:17:40 GMT)
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For your first instance (i.e. the heading), you might well find 'On-board supply' is a good solution — though clearly won't fit for your second instance!

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Note added at 21 heures (2015-04-26 09:01:44 GMT)
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For 'on-board power unit', here are a few random Ghits just from the first page (out of some 150k results):

Patent US20120318913 - On-board aircraft auxiliary power ...

www.google.com/patents/US20120318913

Dec 20, 2012 - On-board aircraft auxiliary power systems having dual auxiliary power units. US 20120318913 A1. Abstract. Aircraft are provided with a pair of ...

Auxiliary power unit - Wikipedia, the free encyclopedia

en.wikipedia.org/wiki/Auxiliary_power_unit

Onboard solid oxide fuel cell (SOFC) APUs are being researched. ..... Starting systems · Electrical generators · Aircraft components · Aircraft auxiliary power units.

Auxiliary Power Unit (APU) Application - eLib - DLR

elib.dlr.de/45732/1/APU_Application.pdf

The expression APU stems from aircraft auxiliary power units, which pres- ... considered that relatively small fuel cell units as Auxiliary Power Units for on-board.

ARP1307 - SAE Standards - SAE International

standards.sae.org/arp1307/

Measurement of Exterior Noise Produced By Aircraft Auxiliary Power Units ... of on-board APUs and associated equipment of aircraft undergoing servicing.

Мотор Сич | Antonov AN-12

flymotorsich.com/en/pages/antonov_an_12

By means of the upper onboard cargo-loading device it is also made loading and ... existence on the aircraft auxiliary power unit (APU) for on-board starting of ...

Beginner's Guide to Aviation Efficiency - Air Transport Action ...

www.atag.org/component/downloads/downloads/59.html

The auxiliary power unit is used to power the onboard ... with the on-board airport database and flight-control ..... fuel-hungry aircraft auxiliary power unit.

(not all totally relevant, of course... but you get the idea!)
Note from asker:
Thank you Tony, you are the best!
Peer comment(s):
agree Nikki Scott-Despaigne : Yes, the Terminium entry seems well dodgy!
58 mins
Thanks, Nikki!
agree chris collister : Interruptible power supplies are all too common...
1 hr
Thanks, Chris! Indeed ;-)
agree EirTranslations
1 hr
¡Gracias, Bea!
agree philgoddard : Several possibilities, but you were first.
4 hrs
Thanks, Phil!
agree B D Finch
23 hrs
Thanks, B! :-)
neutral Johannes Gleim : If a stationary air-plane is not supplied by the airport, an APU generates electricity. Nothing to do with "stand-alone". See http://www.linguee.com/english-french/search?source=auto&que... That's why more context was required.
1 day 3 hrs
It's nothing to do with a PSU, it's a turbine-driven generator. My father was an aircraft engineer, so I do know a bit about what I'm talking about!
Something went wrong...
4 KudoZ points awarded for this answer. Comment: "Thanks Tony :)"
+1
1 hr

internal power supply

as opposed to power supply coming from a source that is external to the airplane

https://www.google.co.uk/search?q=internal power supply to a...
Peer comment(s):
agree Tony M : Also possible, for the reasons you state; though I have a slight preference for 'on-board' (for something as big as an a/craft!) / Oh yes, I do it all the time (mainly for other people's KudoZ queries)! It's astonishing how people STILL disagree.
18 hrs
Thanks! as you said, makes also sense, but ideally you should "phone a friend" working in this industry to get the right "trade term"! I used to do that...
neutral Johannes Gleim : 'internal power supply' is not totally wrong (see my dicussion entry). It exists, but I miss a bilingual links proving it's equality to the asked term.
1 day 1 hr
never said it's the only option, but really can't see how it could be wrong?
Something went wrong...
+1
1 hr

Autonomous power supply

This means the power is supplied autonomously by the aircraft (i.e. from its engines). I noted in the Goursau Aeronautics dictionary the "autonome" is translated in "aero-speak" as "autonomous". Aeronautical terms are generally very standardized.
Peer comment(s):
neutral Tony M : In principle, I agree (as stated in my answer, for the 2nd instance); my only slight qualm is for the 1st, where it isn't so much the power supply that is autonomous as the a/craft, if you see what I mean? Leads to a slight ambiguity....
18 hrs
agree Johannes Gleim : Why not? Any literal translation is better than assertions without proof, especially if no further context is provided. And your reference is convincing.
1 day 1 hr
Something went wrong...
1 day 4 hrs

self-powered supply

As the requested additional context was not provided in time, I searched the internet and fonud the following:

Un procédé de gestion d'un réseau d'alimentation électrique (1) d'un aéronef, le réseau d'alimentation (1) comportant au moins un bus de distribution agencé pour alimenter des charges électriques, au moins un générateur (G1, G2) d'un moteur propulsif de l'aéronef, au moins un groupe de puissance principal de classe moteur (MPS1, MPS2), une pluralité de contacteurs (C1-C18) adaptés pour connecter électriquement les bus de distribution avec le générateur de moteur propulsif (G1, G2) et/ou le groupe de puissance principal (MPS1, MPS2) ; ..).
:
- Alimentation autonome en conditions normales
En référence à la figure 4, lorsque l'aéronef est autonome par exemple en vol ou au sol (avion au roulage), le réseau d'alimentation électrique 1 est alimenté par les groupes de puissance principaux MPS1 , MPS2 qui alimentent respectivement les bus de distribution de la partie gauche et la partie droite du réseau d'alimentation électrique 1 du fait des connexions des contacteurs C1 , C2, C6, C7, C8, C10, C1 1 et C12
http://www.google.com/patents/WO2014106712A1?cl=fr

A method for managing an electric power network (1) of an aircraft, the power network (1) comprising at least one distribution bus arranged to supply electrical loads, at least one generator (G1, G2) of a propulsion engine of the aircraft, at least one) main engine-class power unit (MPS1, MPS2), a plurality of contactors (C1-C18) designed to electrically connect the distribution buses with the propulsion engine generator (G1, G2) and/or the main power unit (MPS1, MPS2) ..
:
- Self-powered under normal conditions
Referring to Figure 4, when the aircraft is autonomous for example in flight or on the ground (taxiing aircraft), the electric power network 1 is supplied by the main power groups MPS 1, MPS2 fueling buses respectively distribution of the left part and the right part of the power supply network 1 due to the connections of the contactors C1, C2, C6, C7, C8, C10, C1 1 and C12
http://www.google.com/patents/WO2014106712A1?cl=en&hl=de

From this patent can be deducted that the airplane uses its own power supply generator (driven by a turbine, i.e. APU) if stationary on the airport and not supplied by ground power. This is called “self-powered”.

What is an APU?

Auxiliary power unit
From Wikipedia, the free encyclopedia
See also: Uninterruptible power supply
An auxiliary power unit (APU) is a device on a vehicle that provides energy for functions other than propulsion. They are commonly found on large aircraft, naval ships, as well as some large land vehicles. Aircraft APUs generally produce 115 V alternating current (AC) at 400 Hz (rather than 50/60 Hz in mains supply), to run the electrical systems of the aircraft; others can produce 28 V direct current (DC).[1][2] APUs can provide power through single or three-phase systems.
:
The primary purpose of an aircraft APU is to provide power to start the main engines. Turbine engines must be accelerated to a high rotational speed to provide sufficient air compression for self-sustaining operation. Smaller jet engines are usually started by an electric motor, while larger engines are usually started by an air turbine motor. Before the engines are to be turned, the APU is started, generally by a battery or hydraulic accumulator. … The started engine can now replace the APU when starting up further engines. During flight the APU and its generator are not needed.
:
Aircraft with APUs can also accept electrical and pneumatic power from ground equipment when an APU has failed or is not to be used. Some airports reduce the use of APUs due to noise and pollution, and ground power is used when possible.
APUs fitted to extended-range twin-engine operations (ETOPS) aircraft are a critical safety device, as they supply backup electricity and compressed air in place of the dead engine or failed main engine generator.
http://en.wikipedia.org/wiki/Auxiliary_power_unit

En technologie aéronautique, le groupe auxiliaire de puissance (GAP), ou en anglais Auxiliary Power Unit (APU), désigne un groupe auxiliaire (turbogénérateur en général) destiné à produire de l'énergie à bord des avions pour permettre d'alimenter au sol les différents systèmes de bord (tension électrique, pressions pneumatique et hydraulique, climatisation) quand les moteurs sont arrêtés afin d'économiser le carburant. Il peut être ou non utilisé en vol. Les APU sont généralement positionnés à l’arrière de l'avion, dans le cône de queue et alimentés par le kérosène des réservoirs de l’avion.
http://fr.wikipedia.org/wiki/Groupe_auxiliaire_de_puissance

Aéronef équipé d'une unité d'alimentation en énergie pour remplacer un générateur de bord entraîné par les réacteurs, une unité de puissance auxiliaire, une RAT (Ram Air Turbine) ou une batterie Ni-Cd, ..
v3.espacenet.com
Aircraft comprising an on-board power supply unit for substituting a main engine generator, an auxiliary power unit, a ram air turbine or a NiCd battery, …
v3.espacenet.co
http://www.linguee.fr/francais-anglais/search?source=auto&qu...


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Note added at 1 day6 hrs (2015-04-26 17:16:10 GMT)
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Some of various links for “self-powered unit” and “self-powered supply”:

An Aircraft Ground Power Unit (“AGPU”) is a mobile vehicle, preferably self-propelled, on which is mounted an enclosure.
:
Further because no currently available AGPU is self-powered, each must be manually connected to a tow vehicle and brought adjacent to the aircraft to be serviced.
:
It is a further object of the present invention to provide a single, self-powered unit that combines all the components necessary to service a variety of aircraft without requiring power from the aircraft itself.
http://www.google.com/patents/US6424891

Also, the self powered unit must have its own switch which you must remember to turn on at the start of a flight.
http://www.rcuniverse.com/forum/beginners/3225041-downed-air...

The signaling device may be installed as a permanent part of a vehicle, such as an automobile, boat or airplane, or it may be a portable, "self-powered unit.
http://www.google.co.in/patents/US3493924

For electric power this would be a device that produces electricity with no external input power (a self powered unit).
[email protected]&q=subject:%22" rel="nofollow noopener" target="_blank">http://www.mail-archive.com/search?l=[email protected]&q=s...[Vo]%3ARe%3A+Looking+for+feedback+on+a+BLP+POC+disagreement%22&o=newest&f=1

In this paper, a novel self-powered supply (SPS) is proposed for the GCT gate driver, ..
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4...

Self powered supply for power converter switch driver
http://www.google.tl/patents/US7965526

.. further comprising at least one of a self powered supply system using a secondary battery.
https://www.google.com/patents/WO2011052863A1?cl=en
Peer comment(s):
neutral Tony M : The supply unit isn't self-powered — it is the aircraft that is! This would work for the 2nd instance, but not really the 1st.
5 mins
Please understand "supply" as unit!
Something went wrong...
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