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Date :
Saturday, 30th July 2005
Time : 7.00 pm – 7.30 pm (Arrival of
Participants & Light Snacks), 7.30 pm –
8.30 pm (Technical Talk)
Speaker : Sudath Mannapperuma
Venue : IET Office, Block B9 Unit 1,
Simpang 32-66, Kawasan Anggerek Desa,
Berakas
Contact Person : Siong E-mail :
ieebrunei@brunet.bn Contact No. : +673
8129119
Cost : B$5 for IET member, B$8 for
non-member for refreshment and venue
preparation only.
Download :
PowerPoint on Aircraft Electrical Power
Systems
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Talk
Synopsis – AIRCRAFT ELECTRICAL SYSTEMS
Almost all airborne power of large
transport aircraft comes from gas
turbine engines. Turbofan type engines
vary the rotor speed according to the
thrust demand, and to maintain the
frequency of the engine-driven
generators, a hydro-mechanical constant
speed drive is needed. When many
complain that the maintenance of this
heavy mechanical item is a burden, why
not let the frequency go wild and tame
it with power electronic conversion?
Though redundancy is a frightening term
in the context of employment, it is one
of the most adorable words in aircraft
design. With two or more thrust
generating engines, the electrical power
system will not be limited to that
number of generators. Even without fuel
energy or engine power, a ram air
turbine will give the ‘lifeline’ power,
not to mention the silently sitting
back-up batteries.
For distribution, the split-bus
architecture is seemingly preferred over
the parallel bus system. The power
demand is growing day by day in the
‘more-electrical’ type designs. Though
technical loads or the essential part of
them is offered with maximum back-up
sources, importance of commercial loads
cannot be disregarded in today’s airline
business.
Though a 400 Hz AC supply is what is
best for the aircraft designer, he won’t
be impolite not to give 60Hz supply for
your laptop computer or the electric
shaver.
CV of Speaker
Sudath Mannapperuma is a technical
training instructor in avionics at Royal
Brunei Airlines. Having graduated in
electrical power engineering from
University of Moratuwa, Sri Lanka, he
served Sri Lankan Airlines for nine
years before joining Royal Brunei
Airlines in 2004. His experience and
exposure spreads over Lockheed L1011,
Airbus A320, A330, A340, and Boeing B737
aircraft types. |
