PSION CD 2/PsionCDVol2.iso/Programs/1118/ATMOS520.TXT

Text File | 1999-11-13 | 7.8 KB | 238 lines

            ATMOS5 V 2.0
********************************************************
*        For the Psion Series 5                        *
********************************************************

(Copyright, ╕ Jaap Laméris. November 1999)

INTRODUCTION
============

ATMOS5 is a program made for students, engineers or other
professionals, who deal with the physics of the standard
atmosphere. It is based on the 1976 STANDARD ATMOSPHERE,
as it is documented in the following reference:
'US Standard Atmoshere, 1976' published by the US Government
Printing Office, Washington DC.

This program was derived from my original program ATMOS3 developed
for the Series 3x. After porting to the series 5 it has been
extended with printing options. I have tried to make the program
to be user friendly as far as possible, and included the use
of different units for the different parameters. Preferences for
the type of units are stored in a separate configuration file.

This program is freeware, not because I don't need the
additional income or fancy the merits of this program, but
charging for something I wrote as a hobby and for fun is not
my style. Further by making it freeware (or better said
postcardware, see the section REGISTERING) I will not be forced
to spent considerable time in maintaining and supporting it just
for the sake of getting a small additional income. That doesn't
mean that I will not support it anymore. As an user of ATMOS
myself and as a perfectionist by nature I will keep improving
the program and supporting any users of it. Another reason to
release it as freeware are some bad experiences in the past
with shareware (PSION and PC) programs for which I paid the
registration fee, after which the author did not support it
any more, released it as freeware or kept charging for updates
despite his earlier promises... .


THEORETICAL BACKGROUND
The 1976 standard atmosphere describes the
"average" air properties of the first seven
layers of the atmosphere. It is mostly suited
for regions at moderate heights, thus not for polar
or equatorial regions. The three lowest layers
are implemented in this program. These are:
the troposphere (0-11 km), and the two lowest
sublayers in the stratosphere (I:11-22 km and
II:22-32 km). Sometimes this last layer is also
called the mesosphere.

The temperature is assumed to be lineairly
decreasing in the troposphere, constant in
the first sublayer of the stratosphere and
lineairly increasing in the second sublayer
of stratosphere. The pressure and density are
both a function of the altitude and temperature.

In reality, actual values will differ from the
standard conditions due to local effects on
the ground and due to weather conditions.
But the Standard Atmosphere is quite a good
tool for engineering use in the field of
aerodynamics and flight mechanics of aeronautical
vehicles.

It is common to express the values of the
pressure and density as relative values
against the sea-level values.

Altitude is normally expressed in terms of
geometric altitude, e.g. the distance above
sealevel, while the actual altitude in the
Standard Atmosphere is defined as the
geopotential altitude, which is an imaginary unit
independent on the value of the gravity constant.
For low altitudes there is not much difference
between both units.


INSTALLATION
============
Below is a list if files supplied in the distribution ZIP
file (The file atmos520.ZIP).

atmos520.sis                         SIS installation file
atmos520.txt                         this file

If using Psiwin 2.x within windows then just click on the atmos520.sis
file. The program will appear in the "normal" Extras Bar after the
installation. Alternatively, you may copy the ATMOS520.SIS to your EPOC
machine and double tab it. If installing from somewhere other than
Windows then you will need to obtain INS_TE.EXE and install that on
your EPOC32 machine. This will enable .SIS files to be decoded using
the EPOC32 machine.

After installation you should have on your machine the following files:

C:\system\app\atmos5\atmos5.OPA       Main application file.
c:\system\app\atmos5\atmos5.AIF
c:\system\app\atmos5\atmos5.MBM
C:\system\app\atmos5\atmos5.HLP       ATMOS5 help file.


USAGE
=====

Most of the information you may need on how to use
ATMOS5 is included on the on-line help.

If you do not install the online help here is a
description of all hot-key presses.

Ctl+S    Singular output
Output of standard atmoshere properties for a singular input.
This may be:  altitude; relative density or relative pressure.
Units are those specified in option Preferences.

Ctl+T    Tabular output
Same as singular input but now for a range of input altitudes.
Input is the lower altitude level, the number of steps
(max. 10), and the step size. Units are those specified in
option Preferences,

Ctl+V    Preferences
The units of the input and output parameters may be defined here.
SI or British units may be choosen for altitude, density, pressure,
temperature and speed independent of the other parameters.

Shft+Ctl+A    About
Info on program

Shft+Ctl+H    Help
Invokes the help screen

Ctl+E    Exit
Exit the program


In addition the printing option lets you invoke the regular Psion 5
printing mode. Please note that you must have invoked first the
tabular output mode to be able to print the tabular data.


ACKNOWLEDGEMENTS
================

Thanks to Jezar for providing the Help generator, Neil K Bee ([e-mail])
for the use of one of his icons, and all other PSION programmers, especially
Steve Litchfield and Al Richey with their RMREVENT program, who gave me
examples of goord working programs.


REGISTRATION
============

WHY REGISTER ?

Although ATMOS5 is freeware, I would be very happy if you let me know that
you are going to use my programme. First of all to satisfy my curiosity, after
putting some time and effort in creating this program.
Secondly it will encourage me to continue further with this program and
extend it if you indicate a need for this. Thirdly I will be able to keep
you informed on next releases of ATMOS5, if you registrate it by me.


HOW DO I REGISTER ?
Preferably you can send your name, adress and/or Email adres
by Email to:

Jaap Lameris
[e-mail]

Else you can send a postcard to:

Jaap Lameris
Richel 10
8303 KX EMMELOORD
Netherlands.

Please include in your registration note,  the version number, you got,
your postal adress and Email adress.

Additional information on ATMOS5 will be also available on my homepage:

http://Jaap_Lameris.tripod.com/mypsion.htm


DISCLAIMER
==========
Use this software at your own risk. I will not be held
responsible for any loss of data and/or any damage caused
to users or hardware caused by this software.



COPYRIGHT AND CONDITIONS
========================
I reserve copyright on this material, any reproduction in
part or whole is strictly prohibited. Additionally,
reverse translation of any of files included in the file
"ATMOS520.ZIP" is strictly prohibited.

You are permitted to distribute the file "ATMOS520.ZIP",
as widely as you see fit, under one condition. That
condition being; That the file is not in any way altered,
and is sent on in an unchanged state.



FEEDBACK
========
If you have any comments or suggestions for me I would be
pleased to hear from you ! You can mail me at the above
address or you can email me at these email addresses;

         [e-mail]
              or
         [e-mail]


HISTORY
=======
Version 2.0 (Nov. '99)
Ported from the series 3 version, ATMOS3 V1.1, and extended with printing
possibilities.

Version 1.1 (Feb. '99) for the series 3:
Better events scheduling applied based on
RMREVENT code. Extended help text.

Version 1.0 (Dec. '98) for the Series 3:
Original release.