FS 98 ASW 20 BL Delta 2 Version 3

THE ORIGINAL

FS 98 model of the ASW 20 BL which I have owned for about 10
years, and with which I have made many nice flights, among
them a 1000 km flight in the Alps.

Specifications:

Wing Span: 16.60m
Wing area: 11m2
Aspect ratio: 25.02
Empty weight: 275 kg
Max All-up weight: 430 kg
Wing loading: 31 kg/m2
Best glide: 45
Min sink ratio: 0.55 m/s at 90 km/h

The ASW 20 has been produced in various versions in 880 units.

THE FS MODEL

This glider has been built using AF 99 and features :

-12 side circles
-reworked geometry for better accuracy and smoother surfaces
(more than 850 parts!)
-full moving parts made with the awesome Aircraft Animator
program from Konstantin Kukushskin
-3D cockpit with animated pilot (supposed to represent me!)
turning his head with the rudder and moving the stick in
time with the ailerons ...
-reworked air file for more realistic performance and
handling. The speed polar has been adjusted with a special
gauge made by Max Roodveldt
-fully realistic panel made with original gauges built by Max
Roodveldt. These include total energy compensated
variometers, a fully-operational Cambridge L-NAV glide
computer coupled to a Cambridge GPS-NAV navigation unit.
Max has done a fantastic job, the L-NAV indeed displays the
speed to fly as well as the altitude required to reach a
given navigation point, taking into account the speed polar
of the glider, the airmass vertical speed, the wind
component and the Mac Cready setting.
The GPS-NAV allows easy navigation and uses original
Cambridge .dat turn-point files.
These gauges work in "british units" as well as in the
metric mode depending on your setting in FS 98.

INSTALLATION

As usual, create an Asw20mp folder in the FS98/Aircraft
directory.This folder must have 4 subfolders: model, panel,
sound and texture. Unzip the files and copy them as follows:

-Copy the Asw20mp.air and Aircraft.cfg files into the Asw20mp
folder
-Copy the Asw20mp.mdl,Asw20mp.mdl.mpi,Asw20mp.mdl.nmp and
model.cfg files into the model subfolder
-Copy all the Asw20mp_.*af files in the texture subfolder
-Copy the sound.cfg file in the sound subfolder
-Copy the Panel.cfg and the aswpnl.bmp file in the panel
subfolder
-Copy all the .gau files in the Gauge folder
-Copy the situation Asw 20 Cheylan.STN in the FS98/pilots
directory.
It allows you to slope soar on a montain near Lake Chelan.
-Copy the Gps-nav.dat file in the root of FS 98
(This is where the Fltsim98.exe file is located )

( You can also make an automatic installation with the latest
version of JAB 98. In this case, only the Asw 20Cheylan.STN
and Gps-nav.dat files have to be installed manually)

USE OF CAMBRIDGE INSTRUMENTS

WARNING: The GPS-NAV works only if there is a turn-point file
in the Cambridge file in the root of FS 98 and this file MUST
be named as GPS-NAV.dat. If this is not the case, you will
get an error message.

The turn-point file included in the package is the file which
was used for the World Gliding Championships 1997 in
Saint Auban (French Alps).

You may download turn-point files for flying on other sites
on the World Wide Turn-point Exchange Server from
John Leibacher: http://niit1.harvard.edu/SSA/JL/TP/

You may also build your own file since a .dat file is in fact
a text file. If you edit the attached one, you will easily
understand the format used.

The Cambridge set may seem complicated to use since it
reproduces many of the functions of the real instruments.
However, just like in real gliding, you can restrict yourself
to the basic function by doing the following:

Switch on the GPS-NAV by pressing ON, and after a short delay
the main screen will appear. Click several times on the RIGHT
arrow key to get one of the navigation point screens:
either "TP:Alphabet" (turn points listed alphabetically )
or "TP:Distance" (turn points ranked according to their
distance from your position)
or "Landpoint" (landpoint ranked according to their distance
from your position).
With the UP or DOWN arrow key scroll to select a destination
and activate it by pressing GO. The GPS-NAV unit will then
display the message: "Navigate to:" followed by the selected
destination as well as the distance, track and bearing to
this point. Navigation is facilitated by the upper turn
indicator. When you will get near the navigation point
(< 2 km) the message "Navigate to:" will change to
"Close to:" and if you are really close (<0.5 km) it will
change again to "Arrival!".

You can now start the L-NAV glide computer using the ON
button. After a short delay, the instrument displays your MSL
altitude. You can then press GO and the home screen will
appear. Displayed are:

-The Speed-to-Fly "Push / Pull" indicator. (to the left of
the screen)
-The netto vario. (vertical speed of the air mass)
-The vario averager.
-The distance to fly to the active waypoint on the GPS-NAV.
-The altitude (MSL).
-The glide slope indicator showing if the altitude is higher
or lower then the altitude required to reach the navpoint.
(to the right of the screen)
-The wind component (HW= Headwind or TW= Tailwind)

By clicking once on the LEFT arrow, the altitude will be
replaced by the difference between your actual altitude and
the required altitude ( which of course is positive if you
are high enough or negative if you are too low).
The required altitude is calculated taking into account the
Mac Cready setting (which is displayed as MC on the lower
line and can be modified with the UP and DOWN keys),
the speed polar of the glider, the wind component along the
track, the elevation of the goal and the goal height
(safety margin you want to have at arrival).
The elevation and the goal height can be adjusted on screens
which can be accessed by pressing again the RIGHT arrow.

As you see Cambridge instruments are very user friendly and
if it happens that you are lost press several times the GO
key and you will be back to the Home screen.

For more advanced use of the instrument, please refer to the
comprehensive Cambridge Set User's manual written by Max and
attached as a Word file.
It may also be useful to download the user's manuals of the
real instruments on the Cambridge site:
http://www.cambridge-aero.com/manuals.htm

POSSIBLE IMPROVEMENTS

-Despite my efforts to get realistic flight characteristics,
it is still difficult to keep the ball centred when you fly
without auto co-ordination (separate rudder and aileron
control). I do not understand why because, as far as I can
judge, the glider does not seem to slip ...

-The airbrakes are not animated because I could not
reproduce the linear motion of the Schempp Hirth spoilers.
They can be controlled proportionally with the throttle
stick when the gauge is visible i.e. when you fly from the
cockpit. If you fly in the view from the tower or from
another aircraft, the airbrakes work in the usual on/off
mode but you may have to strike twice on the " : " key to
extend or retract them.

-The sound file is the sound of the default Schweizer glider.
It would be nice to have a sound for mechanical flaps instead
of the default sound for electrical flaps and a good glider
sound for the outside views. I would also like to have an
audio for the vario but Max says this is impossible to
achieve with FS 98.

-On the previous versions of the glider, the dihedral of the
external parts of the wings was reduced below 20 kts to
simulate the flexible wings of the ASW 20. I could not
keep this feature since it is not compatible with moving
the ailerons with Aircraft Animator which requires the
ailerons to be tagged with speed below 190 or 197 kts.
It is probably possible to animate ailerons without
condition on the speed by making the moving parts in the
"hard way" without using Aircraft Animator ...

-The upper part of the panel is not visible in the virtual
cockpit view. I do not know why ...

If you have any ideas on how to solve these problems please
contact me !

ACKNOWLEDGEMENTS

Many thanks are due to J.J.Schoepfer who is much more
talented than myself at painting and applying textures!
Many thanks also to my friends Max Roodveldt, Wolfgang Piper
and Edward Dumas Sr. and to all those people who work so hard
to make soaring more realistic in FS.

COPYRIGHT

This aircraft is released as Freeware. Copyright (C) Roland
Stuck and Max Roodvelt. As freeware you are permitted to
distribute this archive subject to the following conditions:

-This package may be freely copied and distributed as long
as it is not modified and no charges are made for the
distribution.

-The release of a repainted version of this model is not
allowed without the written permission of the author.

-Selling this package or any part of it is not allowed
without the written permission of the author.

-Putting this package or any part of it on a CD-Rom is not
allowed without the written permission of the author.

Strasbourg (France)

October 99

Roland Stuck

rstuck@evc.net