nuckolls.bob(at)aeroelect
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 Posted: Sat Dec 23, 2023 8:18 am Post subject: Z-14 !!!!NOT!!!! Z-12 times TWO is the appropriate foundati |
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At 08:16 PM 12/22/2023, you wrote:
| Quote: | | Quote: | How would one incorporate the second engine starting system
into the Z-14 diagram? The alternators will be one 40 amp per
engine. Is there anyone who can help with this? |
Z14 illustrates TWO, independently
energized electrical systems . . .whether
driven by two alternators on one engine or
two alternators on two engines. |
The attached cartoon illustrates a side-by-side, single
engine systems with two alternators and one battery.
No interchange of energy between the two after cranking
and in normal ops.
A cross-feed contactor allows exchange of energy between
the systems during (1) cranking and (2) aid to a
compromised system by the system not compromised.
Ignore details of the drawing speaking to brands and
styles of hardware. Focus on architecture to decide
how the system would be operated during predicted
failures.
This seems to be the simplest way to achieve the
greatest flight system reliability for the
engine/accessory combination under discussion.
At the moment I perceive no need for separate engine
busses or considering any form of battery-only
operations. Need for such features implies a
risk of MULTIPLE failures that cannot be mitigated
by the architecture illustrated.
Simple, straightforward legacy operation/risk
for both systems.
Bob . . .
////
(o o)
===========o00o=(_)=o00o=========
< Go ahead, make my day . . . >
< show me where I'm wrong. >
=================================
In the interest of creative evolution
of the-best-we-know-how-to-do based
on physics and good practice.
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| Description: |
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Download |
| Filename: |
Twin_Velocity_Architecture_Cartoon.pdf |
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