Wiggy,
Sorry mate - RB211 spinner de-icing is definetely 'low-tech'
Spinner
The Spinner is such that ice build-up is not a problem.
The shape of the spinner was found to form a ring of ice about half
way back and this ring continuously broke off in small pieces,
preventing any imbalance. The small peices of ice are easily handled
by the L.P. compressor.
The Spinner is made of glass reinforced plastic with a coating of
polyurethane with a rubber (silastic) nose bonded to the spinner. If
ice forms on the nose section, it wobbles and dislodges the ice
before it builds up.
The spinner must be changed if the rubber nose is damaged or
missing.
The temperature rise of fan air is sufficient to keep the inlet of the IP
Compressor clear of ice.
"You are all right". Yes, I agree. For a pilot interview, surely you can only
be expected to list the major systems. In addition, for full points, you can
add pitot/static probes, total air temp probes, angle of attack vanes,
heated windscreens (the main reason for heating these is that it increases
the impact strength of them) and you can throw in drain masts, water
supply/drain lines and you could even be so bold as mention to the
interview panel that the toilet service/dump cap has a heater blanket
fitted (saves having to chip off frozen poo). If anyone really wants to
know the in's and out's ofeach of these I can post the details.
Do you really want to go the extra mile ???? How about APU inlet anti-icing?
General
An APU Air Inlet Anti-icing System using APU Bleed Air is
provided to prevent formation of ice on the APU Inlet Guide Vanes,
Inlet Duct Surfaces and APU Air Inlet Screen. The formation of ice
on the screen, and its subsequent release could cause the same type
of damage as any hard object ingestion.
