Design & Make Your Own
Solid Rocket Motors
"Hands On" Instruction Class
Only $195 For The Complete Class!!
Includes "How To Make Amateur Rockets" Bookset
Taught By John Wickman
A Professional Aerospace Engineer
June 6 - 9, 2013
Thursday, Friday, Saturday & Sunday (SOLD OUT)
October 10 - 13, 2013
Thursday, Friday, Saturday & Sunday (SOLD OUT)
Rocket Motor Design Classes Now Available!! - CP Technologies is now offering its rocket motor design class bundled with our popular "How To Make Amateur Rockets" booksets. The class teaches students how to design and build their your own solid rocket motors. The instructor will be John Wickman, a professional aerospace engineer and internationally known in the field of rocket propulsion.
A highlight of the course will be when students press the firing button on the control panel to test their rocket motor. It will not be an ordinary firing button or control panel. It is the original firing button and control panel used by Aerojet, once called the "General Motors of Rocketry" by Time magazine. From this historic control panel was test fired solid rocket motors powering Polaris, Minuteman and MX missiles including tactical missiles such as Sidewinder, Maverick, Harpoon and many others. Students and their rocket motors will merge with solid rocket history as they press the firing button.
For More Information On This Exciting New Class - Click Here
Foreign Nationals Welcome To Attend Class!**
No Memberships or Certifications Required!
Class Size Will Be Limited To 7 Students
Sign Up Now To Reserve Your Seat
** - Non U.S. citizens may legally attend the class. Military propellants and missile technology information is not included in the class.
Updated CHEM-II Files
We have updated the CHEM II chemical files adding new chemicals. You can now download the new files and update your CHEM II software for free. Click here to learn how to update your CHEM II files.
Propellant Characterization, Homemade Motor &
Reload Design Pages
To help amateur rocket builders, CP Technologies has added two new web pages that will be updated periodically with new information. The first new page is dedicated to solid rocket propellant characterization. Propellant formulations will be posted along with all the necessary data to design your motors using this propellant formulation. Propellants will include ammonium nitrate and ammonium perchlorate composite formulations. Click here to go to this new page.
Many amateur rocket designers started with High Power Rockets and have an inventory of Aerotech or Kosdon motor hardware sitting around. Now, you can make your own reloads for your hardware as we put designs on our motor/reload design web page. You can use these designs directly or modify them for your own use. We even given you suppliers of the propellant sleeves, insulators and nozzle parts. Click here to go to this new page.
Calculate Your Rocket's Center of Gravity &
Weight Before You Build It!
CP Technologies has added a new software program, CG-CALC, that will determine the center of gravity of your rocket during the design phase. Now, you will know the center of pressure and center of gravity to see if your rocket is stable. The software also tells you the rocket's lift off weight so you can design a motor that will be strong enough to a stable flight, even in windy conditions. Click here for more information.
A Dedicated CP Technologies Software Page
We have added a software page that describes our growing list of amateur rocketry software. In the near future we will be introducing new software that will make the design of your rockets and rocket motors even easier. On this page will be information on upgrades to older versions of our software. We will also be periodically updating the CHEM II chemical files adding new chemicals that can be used in your propellant formulations.
Click here to go to the new software page.
Use Pyrodex "P" Instead Of 4F Blackpowder
The topic has come up from time to time about using Pyrodex instead of 4f black powder for ejection charges. We have found the secret to using Pyrodex as a direct substitute for 4f black powder after conducing a series of ground tests and successfully flying 11 rockets with various sized ejection charges all of them using 100% Pyrodex instead of black powder.
The Pyrodex to use is Hodgdon "P" or FFFG Equivalent for ejection charges in PVC pipes sealed on one end or phenolic tubes sealed on one end. The sealed end is usually a PVC fitting with a hole in the middle for the electrical wires to the e-match or flashbulb. If you use a flashbulb, make sure the tip of the flashbulb is in the Pyrodex powder. Flashbulbs do work with the Pyrodex as we had 100% success in ground tests and two flight tests.
We used an equivalent volume of the Pyrodex "P" as a substitute for the 4F black powder. After putting the powder in the open end of the tube, we would put a wadding material in the tube. We filled the rest of the open tube with wadding so that the powder stays at the base of the tube.
On the open end of the ejection charge tube, we would normally use masking tape to seal the tube when using black powder. For the Pyrodex, we used electrical tape to seal the tube. We put one piece across the open end of the tube with the ends of the tape going down the side of the tube. Then, we put another piece of electrical tape across the open end of the tube 90 degrees to the first piece with the ends going down the side of the tube. Looking at the end of the tube, it makes a cross pattern. Finally, we put a piece of electrical tape circumferentially around the tube at the end where we had put the electrical tape. This piece of tape goes over the ends of the first two pieces of tape. That's it.
We are flying just with Pyrodex now as it does not leave the residue or stink you get with black powder. Also, it is generally easier to obtain than blackpowder.
Upgrade Your "How To Make Amateur Rockets"
Software For Only $9.95
Includes Mailing Within The U.S.
All purchasers of the 1st and 2nd Editions of "How To Make Amateur Rockets" can now upgrade their software to Version 2. The cost is only $9.95 which includes mailing within the United States. One of the major features added is the ability to exchange motor data between FPRED and FLIGHT. Now you can design your motor and send the thrust - time curve to FLIGHT and see how your rocket flies. If you don't like the results, modify the motor and send the new motor design to FLIGHT and fly it again. We've also put the chemical ID numbers for CHEM II on-screen so you don't have to look them up in a manual. These are just some of the improvements we added to software.
For More Information On Upgrading - Click Here.