Программа - Motortut v1.10: Rocket motor tutorial
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Rocket Motor Tutorial
Copyright (c) 1994 Gary A. Crowell Sr.
Permission is granted for unrestricted
use and distribution of the program
MOTORTUT.EXE Version 1.10
for non-commercial applications.
MOTORTUT is intended for educational use only. It is NOT a
substitute for reading, understanding, and following the
instructions regarding the use of any particular rocket motor,
igniter, or ignition system. This software is warranted to be of
no particular value for anything, and the author's liability for
any damages resulting from the use of MOTORTUT is limited up to
and including nothing.
MOTORTUT began life as a program called MOTORVUE, which was
developed for use as an attention getting device at a rocket club
public displays. MOTORVE presented animations of the internal
dynamics of a solid rocket motor.
With the addition of more information screens, I finally realized
that MOTORVUE had evolved into the basis of a full rocket motor
MOTORTUT includes several series of subject screens, that can be
individually selected for display, or, a mode can be selected to
cycle through all of the screens. It can be set to move between
screens after a time delay, or the user can use the keyboard to
move at his own pace. At a typical adult reading speed, it will
take about 15 minutes to work through all of the screens.
MOTORTUT covers the basic nomenclature of model rocket motors,
and identifies the internal components and operation of several
motor types. The operation of the ignition system and several
different igniter types are also detailed. This material is
presented at an adult or high-school level, though much should
be useful at an elementary level if used with supervision.
Many of the motor types illustrated deal with high-power
rocketry rather than model rocketry.
MOTORTUT requires a DOS/IBM'ish computer with VGA display. It'll
work fine on a '286 or better, probably fine on anything smaller
too. If running in a DOS window under Windows, MOTORTUT must be
run in the full screen mode.
Not much to it. There are a few selections on the opening screen
to control the speed and such. Typing the associated letter
cycles through the available selections for each item; these are
detailed in their respective sections below. A carriage return
starts the selected sequence.
Pressing the ESC key at any time will jump to the ending screen;
from there you can quit to DOS, or return to the menu screen.
(Note: This operation is a bit ragged; there may be a delay.)
In the continuous mode, the program will repeatedly cycle until
stopped. In most screens, hitting the space bar will skip to the
next screen without delay. Also in most screens, hitting "P"
will pause on the current screen until another key is pressed.
MOTORTUT V1.10 page 1 (c) 1994 Gary A Crowell, Sr.
This is just a bit of theatrics intended to attract attention to
the animation. Mercifully, you have the option to turn it off.
Selecting "WAIT FOR KEYPRESS" will hold the display on every
screen until any key is pressed. This mode is the easiest to
use for an individual working through the screens. The other
pause duration selections control the time delay between
successive displays if MOTORTUT is running in a continuous mode.
motor component labels and the explanatory text. It needs to
The actual number of seconds selected here is relative, the
actual delay on any screen will depend upon speed of your
computer and also varies with the amount of new information on
each screen. You can end any pause period at any time by
pressing the spacebar (any key except ESC, actually).
This control can be adjusted for the speed of your computer so
that the motor burning animation runs for a realistic duration.
This control selects whether the motor animation will run
continuously after ignition, or if it will pause for the
selected pause duration for text display at event points.
Selecting SMOOTH will overrule any pause duration during the
animation. The pause times still apply during the non-animation
MOTORTUT presently allows selection between display of five
different animated screen sets:
Motor Classifications / Thrust-Time Curve
Single-Use Composite Core Burning Motor
Single-Use End Burning Motor
Reloadable BATES Motor
Sheathed Thermalite Igniter
Motor Core Cross-Sections
Additionally, there is a selection that will cycle through all
of these screen sets in turn.
MOTORTUT V1.10 page 2 (c) 1994 Gary A Crowell, Sr.
When you exit MOTORTUT, the control selections will be saved
in a file titled MOTORTUT.CFG. Those selections will be
restored the next time the program starts. The .CFG file will
be created if it does not exist. Delete the .CFG file before
starting MOTORTUT to restore the default selections.
POSTER.DOC is an example "poster" file; copy or rename it to
POSTER.TXT to use it. When MOTORTUT finds a POSTER.TXT file it
uses it to format the screen that appears between sections of the
tutorial. By editing the poster file to specify the location,
font size, color, etc., and text, you can change the screen to
display your club name or whatever is appropriate for your
demonstration. The header of the POSTER.DOC file details the
options available and shows a sample message. It will take some
trial and error to get the screen looking the way you want. The
quickest way to see your screen is to start MOTORTUT and hit
'ESC' a couple of times. Note that there is no format checking
on the POSTER.TXT file; if it is not exactly in the format shown,
the program will probably crash.
The bibliography listing is very brief and will be expanded in
The glossary is not implemented at this time.
MOTORTUT V1.10 page 3 (c) 1994 Gary A Crowell, Sr.
If there ever is one, a future version of this program might
* Tweeking to improve the accuracy of the animations and the
* The addition of a hypertext type glossary of rocket motor
* Addition of different launch control system types.
* Addition of Moon Burning, Booster, and Plugged motor types.
* Addition of Model Rocket motor history, manufacturer
information, casing sizes, propellant types.
* DeLaval nozzle description.
* Expansion of the bibliography.
* Interactive controls.
* Scanned Photos of motors, launchers, etc.
* New Tutorials: Rocket Motion, Rocket Stability.
* Any suggestions YOU might provide.
Suggestions for improvements, corrections, or bug reports of any
nature would be greatly appreciated.
"Copy-protected software is user-" Gary A. Crowell, Sr.
offensive" 6907 Ashland
Boise, ID 83709
208-377-4924 home eves
208-345-4050 work days
208-345-9359 work fax
10/13/93 MOTORVUE 1.00 Initial release to CompuServe.
11/30/93 MOTORVUE 2.00 Added .DOC file; added Core and
Endburning animations; added .CFG file; improved
animation controls; added core cross-sections.
03/15/94 MOTORTUT 1.00 Added thrust-time curve, and motor class
screens. Added pause control. Added animated thrust-
time curves. Attempted to adjust delays to match the
amount of information presented on any screen. Added
motor nomenclature screens.
07/18/94 V1.10 Added programmable "poster" screen.
MOTORTUT V1.10 (c) 1994 Gary A Crowell, Sr.
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