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Module 17. Propeller

Electrical power supplies on large aircraft, for electrical deicing are
• Both AC or DC.
• DC.
• AC.

obrien99 asking:
• Is this correct? I thought some turbo props used AC wild for electrical de icing. i'm sure the key to this question is "large aircraft" i assume this would be aircraft over 7500kg.

Community comments: 7

obrien99
Posts: 17
07.03.2012 / 13:53

Done a little bit of reading on this found some info on the Dash 8 the blades are de iced by 115V

read the prop section on page 6

http://www.smartcockpit.com/data/pdfs/plane/bombardier/DASH-8-200-300/systems/Dash8-200-300-Ice_and_Rain_Protection.pdf

dimky
Posts: 509
16.03.2012 / 16:56

Hey Obrien!

Sorry for late reply. I agree with you, I marked AC as right answer instead of DC.

bhusan66
Posts: 3
03.10.2013 / 15:13

Larger aircraft use 115 V AC variable frequency power supply. Smaller aircraft use a 28 V DC power supply.

http://goo.gl/Gsygvp

mwongela
Posts: 18
06.11.2014 / 20:40

does this mean that the answer is both?

Ielgazali
Posts: 3
07.11.2014 / 02:45

yes the answer is both

Ielgazali
Posts: 3
07.11.2014 / 02:58

Actually i take that back. the key word here in the above Q is LARGE AIRCRAFT. larger aircraft use 115 AC while smaller aircraft uses 28 VDC. so for this question the answer would be .AC

max.steelame
Posts: 3
19.10.2018 / 08:24

For this question Some answers are marked as DC please clarify.

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