HondaJet: Not A Steam Gage In Sight

http://world.honda.com/HondaJet/Styling/FlightDeck/
· All information, from flight and engine instrumentation to
navigation, communication, terrain and traffic data, is uniquely
integrated and digitally presented on the dual, large-format, high-
resolution primary flight displays and the multifunction display


· The HondaJet cockpit configuration provides a high degree of
integration for enhanced situational awareness, functionality, ease of
operation, redundancy, and flight safety.

Recently, Larry Dighera posted:

http://world.honda.com/HondaJet/Styling/FlightDeck/
· All information, from flight and engine instrumentation to
navigation, communication, terrain and traffic data, is uniquely
integrated and digitally presented on the dual, large-format, high-
resolution primary flight displays and the multifunction display


· The HondaJet cockpit configuration provides a high degree of
integration for enhanced situational awareness, functionality, ease of
operation, redundancy, and flight safety.

It will be interesting to see how this one is FAA-certified. Power failure
would be a worst-case scenario, so I'd be surprised if this plane lacked
multiple power sources, but a lightning hit could be a problem.

Neil

Neil Gould wrote:
It will be interesting to see how this one is FAA-certified. Power failure
would be a worst-case scenario, so I'd be surprised if this plane lacked
multiple power sources, but a lightning hit could be a problem.

I thought modern jets don't have steam gauges as backups anymore.

On 19 Oct 2006 16:15:29 -0700, "Bucky" wrote in
.com:

Neil Gould wrote:
It will be interesting to see how this one is FAA-certified. Power failure
would be a worst-case scenario, so I'd be surprised if this plane lacked
multiple power sources, but a lightning hit could be a problem.

I thought modern jets don't have steam gauges as backups anymore.

What do you do when the electrical system fails?

In article ,
Larry Dighera wrote:

On 19 Oct 2006 16:15:29 -0700, "Bucky" wrote in
.com:

Neil Gould wrote:
It will be interesting to see how this one is FAA-certified. Power failure
would be a worst-case scenario, so I'd be surprised if this plane lacked
multiple power sources, but a lightning hit could be a problem.

I thought modern jets don't have steam gauges as backups anymore.

What do you do when the electrical system fails?

Peanut gauges are electric, but they have their own power, independent
supply.

Larry Dighera wrote:
What do you do when the electrical system fails?

Kiss your arse good-bye!.

Larry Dighera wrote:
What do you do when the electrical system fails?

I found this article on the Airbus 320, which has an all glass cockpit:

"The energy supply is backed up in several ways. Along with one
generator per engine, a third generator is powered by the APU. A fourth
power supply is available by extending a little fan generator into the
airstream. The chances of experiencing a complete power loss in an A320
are calculated to be at around one in one trillion. Should this happen,
the above mentioned mechanical system of the rudder and the elevator
trim ensure a safe landing."

http://www.flug-revue.rotor.com/FRhe...09/FR9709a.htm

Recently, Bucky posted:

Larry Dighera wrote:
What do you do when the electrical system fails?

I found this article on the Airbus 320, which has an all glass
cockpit:

"The energy supply is backed up in several ways. Along with one
generator per engine, a third generator is powered by the APU. A
fourth power supply is available by extending a little fan generator
into the airstream. The chances of experiencing a complete power loss
in an A320 are calculated to be at around one in one trillion. Should
this happen, the above mentioned mechanical system of the rudder and
the elevator trim ensure a safe landing."

http://www.flug-revue.rotor.com/FRhe...09/FR9709a.htm

That's all well and good for the failure modes of the on-board generators.
How did they protect against the power surge that a lightning hit could
impose that could take out the PFDs?

Neil

"Bucky" wrote in message
oups.com...
Larry Dighera wrote:
What do you do when the electrical system fails?

I found this article on the Airbus 320, which has an all glass cockpit:

"The energy supply is backed up in several ways. Along with one
generator per engine, a third generator is powered by the APU. A fourth
power supply is available by extending a little fan generator into the
airstream. The chances of experiencing a complete power loss in an A320
are calculated to be at around one in one trillion. Should this happen,
the above mentioned mechanical system of the rudder and the elevator
trim ensure a safe landing."

http://www.flug-revue.rotor.com/FRhe...09/FR9709a.htm


Didn't a G5 lose ALL 5 Honeywell MFD's at the same time last year?
As I remember, it was the second time it had happened. An all "Black" glass
cockpit.


Al G

Bucky writes:

The chances of experiencing a complete power loss in an A320
are calculated to be at around one in one trillion.

There isn't any way to accurately calculate probabilities of the order
of one in a trillion when dealing with physical systems. Estimates
are often off by many orders of magnitude.

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