Description of TrajectoWare Drive
Description of TrajectoWare Drive
is a golf ball trajectory program. It takes the initial conditions a
golfer applies to the ball, and plots the flight of the ball.
have probably seen trajectory programs before. You may even have used
them. We have. Which brings us to...
When we used the available programs, we found them
wanting. See Dave's comparison
of existing programs for an explanation of what motivated us
to develop our own program. TrajectoWare Drive is
the result of that
effort. It is a unique combination of high accuracy and an advanced
user interface. Specifically.....
Features of TrajectoWare Drive
and slice) as well as vertical trajectory.
accounts for sidespin as well as backspin, face angle as well as loft.
You can look at the usual side view that trajectory programs give you,
a top view to see the effect of sidespin, and finally a table of
has its uses. As users ourselves, we would not want to be without any
of these views.
Input both launch conditions and impact
conditions. Most trajectory programs allow either
launch conditions (ball speed, launch angle, backspin, etc) or
impact conditions (clubhead speed, loft, etc) as input. TrajectoWare
Drive allows you to input launch conditions, impact
even a mixture to set up the trajectory. Moreover...
Impact conditions are deduced from launch
No other trajectory program will calculate the effect on the impact
conditions as you enter launch conditions -- and vice versa.
TrajectoWare Drive not only does this, it
shows the changes in real time. For instance, with TrajectoWare Drive,
change the launch angle without changing ball speed or backspin, you
will immediately see the changes in clubhead speed, loft, and angle of
attack that must have occurred to cause that change in launch angle.
changes in real time. No need to
hit "Run" and then try again.
Use the cursor up/down keys or your scroll wheel to "animate" the
trajectory changes due to any variable. Want to see how backspin
affects the trajectory? Go to the backspin control and move the scroll
wheel on the mouse, or hold the cursor key, and watch the trajectory
can save both
"live" and formatted versions of your work.
You can save your work as a "project", in a form that can later be
opened and modified further. That's a unique capability. Of course you
can export the table view for use in a report, as other programs do.
And you can also export the graphics views to illustrate the report.
Don't like the
trajectory colors that come with it? Configure your own.
You can change the order of the colors for the trajectory views, or
even the set of colors used. Don't want yellow against the white
background? Get rid of yellow. Prefer gray scale? You can do that.
columns you want recorded for the table
view. Almost every input and output can be a column
in the table view. Can
be, not must be. You can choose any columns in any order. Makes it
easier to see patterns in the data, or to prepare the table for use in
your units. Like ounces
instead of grams? Prefer meters to yards? Farenheit or Celsius? Have it
online manual in the form of Help.
The Help facility was written as an online manual. It includes a
getting-started section, a full user guide, and a reference manual.
Need to find something? We paid a lot of attention to the index, and
Help has a clickable image of the user interface that takes you right
to the help page for the control you clicked.
of TrajectoWare Drive:
Yes, we do list our limitations.
TrajectoWare Drive is free, so we have no motivation
to exaggerate our
claims. Besides, we're engineers, not marketers.
and long woods only.
The program loses accuracy at spin rates above 4000rpm, so it does not
do a good job with irons.
distance only. We are working on bounce and roll,
must wait for a future version.
only. The program is not designed to work on Macintosh,
Linux, or other non-Windows operating systems.
We would like to take
opportunity to thank:
The high accuracy of TrajectoWare Drive's output
stems from these contributions.
- Todd Kos (the
creator of the OptimalFlight
program) for providing us with real-world data to test our program, and
C. Adams for allowing us to use the programming
algorithms from his trajectory spreadsheets.