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simulator. An overweight or a flight model that has a Centre of Gravity outside the flight model limitations
is inefficient and possibly will degrade all sorts of flight performance characteristics relating to effective
simulated flight.
Weight
Overweight aircraft will have many side effects some of which are:
• Higher Vspeeds, inaccurate take-off distances and landing
• Stalling speeds effected
• Rate and angle of climb
• Engine performance
• Maneuvering impaired in both automatic and manual flight
So, when establishing the ‘load’ of your air-file, pay attention to the station loads and also the fuel load.
The ‘actual’ airfile weight is read by the CDU and shown in brackets (xxx). The pilot entered weight (via
LSK CDU entry) and resultant GW should generally match the bracketed actual air model weight. Note that
a common error is not to allow for the differences of lbs and weights in kgs. Once you are certain that you
are happy with your weights then you can (as an option) removed the secondary bracketed weight
indication (ini file option). This is not an indication seen on the real a/c and is there as a cross reference –
you should consider removing it if it is likely to cause confusion to pilots operating your simulator. To recap,
and for the avoidance of doubt, the bracketed (xxx) weight after the indicated weight is measuring the
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actual weight of the MSFS airfile. But the computations of the FMC are not based on the bracketed weight,
they are based on weights entered into the CDU.
Balance
At the same time that overall weight is considered, the balance of the load is also to be considered and is
equally important.
The centre of lift will effect the flight characteristics and the normal Centre of Gravity is usually 25% aft of
the leading edge of the wing (it is more complex than this for swept wing a/c but it is enough to work on
this theory in the bounds of MSFS at this time). This should provide good longitudinal stability. If the CofG
is too far aft or too far forward, then you can end up with a flight model that is difficult to control,
especially with the elevator, this can result in having to apply larger than normal trim inputs, and in worst
case scenarios, even running out of elevator and elevator trim authority. So, making turns with an out of
balance a/c can result in abnormal pitch tendencies, making flight in instrument conditions, perhaps trying
to follow the FD much more difficult due to the induced instability. So, the longitudinal stability mainly
refers to the ‘station loads’ of your selected flight model – you should aim to get the CofG within the limits.
If you’re a/c has fuel loading capability in the main a/c fuselage – this should also be considered.
Lateral Stability can be affected by incorrect loading of fuel in the wing tanks. If you have a fuel imbalance
your flight model may tend to fly wing down on the heavy side. Again, this can effect many things, like
instability in level flight and in turns. If the balance is sufficiently great, it may even no longer be possible
to maintain lateral control of your aircraft.
FAQ
can't find an answer to my question?
Just write an e-mail to support@projectmagenta.com or go to our newsgroup listed here
Testing our Software
Will the Glass Cockpit and the other programs be compatible to Microsoft Flight Simulator?
Absolutely yes! We have been compatible to the last six versions of Microsoft Flight Simulator and any new
release is considered to be our current version.
Can I try before I buy? Where is the Demo?
Yes, please try our software first, you can find it .And you can find the current version of the instructions in
our documentation section.
The demo doesn't work. What can I do?
Easy fix: send us an e-mail (support@projectmagenta.com) with the problem and we will help, as if you
were already our customer. A more interesting solution: go to our documentation section and check our
PDF-Format User Manual.
What hardware do I need for the Glass Cockpit?
A difficult question to answer... it depends on the performance you expect. Some might be happy with one
solution, others would never accept it. Please check out our Demo to see whether the hardware you want
to use is acceptable to YOU. As a general advice we would like to see the Demo Benchmark test to score
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better than 120 and the graphics card on your system to be able to accelerate OpenGL (the Demo will tell
you if it does).
Still, what are your Hardware Requirements?
For the Glass Cockpits we recommend a PII 300 or better with a graphic card able to accelerate OpenGL
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