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What Is The Difference Between A PCU & A PCA?  
User currently offlineCOwrenchturner From United States of America, joined Oct 2006, 11 posts, RR: 0
Posted (8 years 2 weeks 3 days 1 hour ago) and read 4524 times:

Could anybody help me? I am wondering what the difference is between a Power Control Unit and a Power Control Actuator. This is in reference to flight controls.


Aircraft maintenance can be done fast, cheap or right. Pick two.
11 replies: All unread, jump to last
 
User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 1, posted (8 years 2 weeks 2 days 23 hours ago) and read 4509 times:

The same.
On the B737 its called a PCU.
on the B757 its called a PCA.
Function the same.
regds
MEL



Think of the brighter side!
User currently offlineCOwrenchturner From United States of America, joined Oct 2006, 11 posts, RR: 0
Reply 2, posted (8 years 2 weeks 2 days 21 hours ago) and read 4495 times:

Thanks for your help!


Aircraft maintenance can be done fast, cheap or right. Pick two.
User currently offlineAvt007 From Canada, joined Jul 2000, 2132 posts, RR: 5
Reply 3, posted (8 years 2 weeks 13 hours ago) and read 4414 times:

Some manufacturers use different terms for different styles of actuator on the same aircraft. For example, an actuator that operates a ground spoiler is an on/off type actuator- up or down. But on the flight spoiler next to it, a similar actuator is capable of modulating, in other words the spoiler can move in small increments any where from retracted to fully extended.

User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 4, posted (8 years 2 weeks 6 hours ago) and read 4394 times:

Quoting Avt007 (Reply 3):
For example, an actuator that operates a ground spoiler is an on/off type actuator- up or down. But on the flight spoiler next to it, a similar actuator is capable of modulating, in other words the spoiler can move in small increments any where from retracted to fully extended.

I dont think that would be the reason for the different terms.Its just that the Manufacturer called a PCU a PCA on the next model & it stuck.
regds
MEL



Think of the brighter side!
User currently offlineAirgypsy From United States of America, joined Nov 1999, 130 posts, RR: 2
Reply 5, posted (8 years 1 week 6 days 16 hours ago) and read 4368 times:

Names are "invented" by bright young people with no field experience or history. Naming convention failures by engineering are the nightmare of mechanics and material control people.
So, what is a THS?

Airgypsy


User currently offlineFr8mech From United States of America, joined Sep 2005, 5657 posts, RR: 15
Reply 6, posted (8 years 1 week 6 days 16 hours ago) and read 4361 times:

Quoting Airgypsy (Reply 5):
So, what is a THS?

Trimmable Horizontal Stabilzer, courtesy of the French.



When seconds count...the police are minutes away.
User currently onlineStarlionblue From Greenland, joined Feb 2004, 17174 posts, RR: 66
Reply 7, posted (8 years 1 week 6 days 14 hours ago) and read 4350 times:

A couple of (probably incomplete) lists:

Airbus acronyms: http://www.rosboch.net/aviation.htm#AirbusAcronyms
Boeing acronyms: http://www.rosboch.net/aviation.htm#BoeingAcronyms



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 8, posted (8 years 1 week 5 days 9 hours ago) and read 4324 times:

Quoting Fr8mech (Reply 6):
Trimmable Horizontal Stabilzer, courtesy of the French

Thats another one like the SAM on the B757 which reads as Stablizer Trim and Elevator Assymetrical Module,so shouldn't it be STEAM.
 Smile

Quoting Starlionblue (Reply 7):
0

Interesting.Thanks.

regds
MEL



Think of the brighter side!
User currently offlineReidYYZ From Kyrgyzstan, joined Sep 2005, 536 posts, RR: 0
Reply 9, posted (8 years 1 week 11 hours ago) and read 4255 times:

On the A330 course, as we were getting into the nitty-gritty of the CBT (computer based training) we would end each day with a de-brief. On asking the instructor about all the acronyms, he told us that there was a dark windowless office somewhere in TLS that had 6-10 Airbus employees just working on acronyms. Boeing has its' fair share, but the 'bus CBT really exaggerates with the Ferris Bueller teacher (Ben Stein) 'anyone, anyone' monotone narration.

[Edited 2006-12-16 05:36:36]

User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 10, posted (8 years 1 week 7 hours ago) and read 4236 times:

Quoting ReidYYZ (Reply 9):
he told us that there was a dark windowless office somewhere in TLS that had 6-10 Airbus employees just working on acronyms

Wonder why no Window  Smile
regds
MEL



Think of the brighter side!
User currently offlineKaddyuk From Wallis and Futuna, joined Nov 2001, 4126 posts, RR: 25
Reply 11, posted (8 years 1 week 7 hours ago) and read 4235 times:

Quoting HAWK21M (Reply 10):
Wonder why no Window

Because if there were windows, they're realise that not everything has to be made into an acronym!



Whoever said "laughter is the best medicine" never had Gonorrhea
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