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Flight Simulator X: Freeware FSX-FS2004 Downloads, flight simulator
x downloads, fsx aircraft, Historic - Vintage Aircraft.
FSX Downloads Downloads / FSX Downloads Helicopter
Compatibility: Flight Simulator X
Filesize: 46.32 MB
Added on: Jun-21-2007
This is a major upgrade from the FS9 version. New features include:
• Virtual cockpit
• Custom gauges
• Checklist procedures from pre-flight to shutdown
• New flight dynamics and audio
• Greatly increased detail
• New variations and paint schemes, including the float-equipped Vertol V-44
The H-21C is powered by a single piston engine. Throttle and collective pitch
are synchronized, allowing an rpm setting to be maintained automatically as
collective pitch is adjusted. Torque yaw correction is not necessary, since
torque yaw is cancelled out by the counter-directional rotation of the rotors.
However, the pedals can be used in a similar manner to those in a single rotor
helicopter. Displacing them causes the two rotor planes to tilt in opposing
directions, making the helicopter rotate about its vertical axis.
Flying the H-21C
The helicopter is designed to be fully flyable from the virtual cockpit. You can
access different areas of the cockpit by using keystrokes to switch camera
views. You can also bring up conventional 2D windows for the radios and GPS.
If you prefer flying from the 2D cockpit, that’s also do-able. You can switch
between the various 3D cockpit cameras during the startup procedure, then go
back to the 2D panel to fly. Notice that the 2D panel extends beyond the screen;
you can drag it to any position you want.
The best place to get started is by setting up keystrokes for the camera views (see
Assigning Camera Views).
• Locate the Rotorcraft folder in your FSX installation. A typical path would be:
C:Program FilesFlight Simulator XSimObjectsRotorcraft
• Copy the main folder into Rotorcraft
• Copy the contents of the Effects folder into your FSX installation’s Effects
NOTE: The first time you create a flight with the helicopter, the following
prompt will appear for one or more of the gauge files: Do you want to run this
software? (Click Run). You’ll then be asked: Would you like to designate this
module as trusted software? (Click Yes).
Assigning camera views
The various parts of the cockpit can be accessed by using close-up camera views.
You can toggle between the cameras using the “A” key, but the recommended way is
to assign keystrokes to access them directly.
The Camera or Window column in the checklist lists the best camera (or, in a few
cases, 2D window) to access at any given time, and the Key Stroke column lists
the key stroke to access it. The camera views have already been set up, but the
key strokes listed for them need to be manually assigned the first time you use
them. The procedure is:
• Open Flight Simulator, and go to Settings > Other Settings > Controls
OR, if a flight is already loaded:
Options > Settings > Controls
• Click the Buttons / Keys tab
• In Event Category dropdown, choose Views
• Scroll down the list, to the View camera entries
• Select View camera 4
• Click Change Assignment
NOTE: The keystrokes listed here jibe with those in the checklist. If you’ve
already assigned your own preferred key strokes for views 4 through 9, you can
use them instead.
• Hit the “4” key to assign it to Camera 4. This will not overwrite the default
keystroke (F12) for that camera, you’ll be able to use either one.
Repeat the last few steps to assign keystrokes to the other camera views as
“Pilot’s View” (which is accessed using the 7 key if you’re using the
assignments listed above), is the same as the default eyepoint (the normal,
straight-ahead flying view that’s accessed with F9), but has the following
• It will always quickly return you to the straight-ahead view, since it can’t
be altered using the hat switch. By contrast, if you’re in the default eyepoint
and use the hat switch to look off to the side, for example, there’s no easy way
to quickly get back to a straight-ahead view (sometimes the spacebar works;
sometimes it doesn’t!).
• It can be edited to suit your tastes (see next section), whereas the default
eyepoint should never be edited since all the other camera views are defined as
xyz offsets from it and will also be affected.
• It bypasses a bug that’s been observed when using TrackIR (See Known Issues,
Editing the Pilot’s View
The Pilot’s View can be edited to suit your flying style. For instance, you
could change it to a wider or narrower view. Open Sim.cfg in a text editor (make
a backup first!). Then access the section under the heading:
• Changing the InitialZoom value to a higher number produces a narrower initial
view; a lower number gives a wider view.
• Changing AllowZoom from False to True allows the zoom setting to be altered
using the plus and minus keys.
• InitialXyz allows you to adjust the camera’s position. The values are in
meters, and are offsets of the default eyepoint. For example, they’re currently
set to 0, 0, 0 – because the view is exactly identical to the default eyepoint.
The values are, respectively, left/right, up/down, and front/back.
The helicopter uses default FSX Bendix King radios, which can be brought up by
hitting (Shift)2. For authenticity, vintage radio equipment is also included in
the panels, but is not operational.
The following navigation instruments can be used:
Directional Indicator: An ADF indicator, with an automatically rotating compass
AN/ARN 30A Indicator: Works the same as a conventional VOR indicator.
Radio Compass: Like the Directional Indicator, this is an ADF indicator. The
only difference is that the compass card must be manually rotated to the current
Compass Slaving Switch: This switch has no effect in the simulation
GPS: (Shift)3 brings up the portable Garmin GPS.
When changing fuel level, specifying quantity in gallons will not reflect real
world numbers. Instead, use percentages.
• Power levels can fluctuate without user input after the aircraft is first
loaded. Levels should return to normal after 15 or 20 seconds, and the problem
shouldn’t interfere with flying. In some cases, engine rpm will be inadequate
for takeoff when first loading the aircraft. This situation should also correct
itself after 15 or 20 seconds (the engine and rotor needles on the dual tach
gauge need to be close to or within the red lines to achieve takeoff power). If
adequate power isn’t attained after about 30 seconds, re-load the aircraft. In
rare cases it may be necessary to save the flight, re-start the sim, and load
the flight. These bugs have been observed in other FSX aircraft as well,
particularly the R-22 (which is a distant cousin of the H-21C!).
• The helicopter hasn’t been extensively tested with heavy loads and at very
high altitude airports. If adequate lift can’t be attained, first verify that
the engine needle of the dual tach gauge is between the red lines (or very
slightly below). If so, the thrust of the rotors can be increased by opening
sim.cfg in a text editor, and increasing the Inflow Velocity Reference. The
setting is very sensitive; try increasing it by 2 at first. The entry would look
like this (the original value has been left in, and disabled by comment marks):
//inflow_vel_reference = 72.0
inflow_vel_reference = 74.0
It should only be necessary to change the value in extreme situations, and it
should be returned to 72 for normal flying. Modifying config files is difficult…changes
can have unpredictable side effects.
• During Beta testing on one machine, crackling was heard in the audio,
especially when changing power settings. The problem was fixed by raising the
Hardware Acceleration setting for the sound card (Control Panel > Sounds & Audio
Devices > Volume tab > Speaker Settings > Advanced > Performance > Hardware
• If you’re using TrackIR (which is a blast in this chopper!), a bug has been
observed on some machines, affecting all aircraft: When TrackIR software is
loaded, using the F9 key fails to access the default eyepoint and causes the
view to lock up. If this happens, hit F9 a second time, to unlock the view. Then,
hit the 7 key to bring up the Pilot’s View (assuming you’ve assigned the
keystroke as described previously).
• Main panel flight gauges and dual tachometer were programmed by Doug Dawson.
• German translations are by Patrick Freitag.
• Additional thanks to:
o American Helicopter Museum
o Bill Leaming (leading aircraft design guru)
o Jim Kinter (former H-21 mechanic)
o Rodger D. Fetters (former H-21 mechanic)
This aircraft is freeware, and is the property of the author. The aircraft, as
well as its component parts, cannot be sold or distributed without the express
written permission of the author. It cannot be uploaded to the Internet without
the express written permission of the author. If it is uploaded to the Internet,
it must be accompanied by this text file.
Gauges may not be distributed without permission by the author. Dual tachometer
and main panel flight gauges also require the permission of Doug Dawson.
The user assumes all risk of use; the author is not liable for any problems you
may incur as a result of its use.
? 2007 Mick Posch
All rights reserved
New Jersey, USA