PMDG 737 0.00.45
INTRODUCTION
For Simulator Use Only DO NOT DUPLICATE NOVEMBER 2022
amount of lift being generated but bent in a characteristic way
under the weight of the aircraft.
• Environmental factors are also included in the calculations, so
turbulence and gusts will also influence the wing flex behavior. As
the wings react to these environmental factors, the engines and
engine pylons will as well.
Pneumatic System:
• The bleed pressure produced by each engine is directly
computed based upon bleed production of the engine for current
RPM and appropriate combination of high- and low-pressure
stages bleed air as controlled by the HPSOV (High Pressure
Shut-off Valve), and the PRSOV (Pressure Regulating and Shut-
off Valve). The logic of these two valves (condition to open/close,
target pressure values to regulate, etc.) is simulated in detail,
resulting in highly accurate bleed pressure production values for
each engine.
Sounds:
• This package uses over 1400 digitally recorded sounds to
replicate the living, breathing work environment of a 737 pilot.
• While in the external views, you will hear sounds made by ground
equipment, windmilling engines, wing fuel pumps, electric
hydraulic pumps, air conditioning packs and the APU. All of these
sounds layer together to provide a very realistic exterior sound
environment.
• We recorded sounds for nearly every switch on the flight deck
and then linked them in such a way as to ensure that they are
synchronized to switch movements whether fast or slow.
• Many sounds in the product have multiple recordings that trigger
randomly to produce a subtle different in the sounds each time a
particular one plays. This is a technique borrowed from music
production (Armen and Ryan are both musicians), where
randomized drum samples are often used to produce a more
human sounding programmed drum performance.
• Some mechanical systems on the airplane can be faintly heard
from the flight deck (electric hydraulic pumps, for example) and
you will hear them from the flight deck if you listen closely.
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