The PML Co-Pilot v3 is a 100% CPR-compatible altimeter at a great price!
If you want to fly high altitude rockets in a small field, you`ll need it!
The Public Missiles Ltd. CoPilot v3 altimeter was developed exclusively for PML by Missile Works Corp., and was designed specifically for PML’s CPR3000 and CPR-MAX Recovery Systems (though it can be used in other applications as well, such as scratch-built deployment systems). The CoPilot v3 provides two-stage deployment of rocket recovery systems and equipment. Using the CoPilot v3 altimeter and CPR3000 technology, a small drogue or streamer is deployed at apogee allowing for a fast but controlled descent. At a user-selectable lower altitude, the altimeter fires a second charge to deploy the main chute allowing for a soft landing. This system allows a high-altitude flight to be returned much closer to the launch area than if the main chute were deployed at apogee.
The CoPilot v3 unit is designed to work “out of the box” with a typical CPR3000 flight of “drogue at apogee, mains at 500 feet.” No pre-programming is necessary to use the unit in this fashion.
The Co-pilot v3 has 3 outputs; Drogue and Main Outputs, plus a configurable third “Aux” output!
Configurable Deployment operations
Configurable Arming and Main Deploy altitudes
15 flight memory at up to 28 minutes recording per flight
User-selectable beep frequency
Rugged, reliable, and uses a standard 9v alkaline battery
“Fore” and “Aft” markings to aid in proper mounting
USB connection port (requires user-provided USB-A to Mini-B cable)
Plus many more features! See below for more info.
What is CPR?
CPR is an altimeter based, two step parachute deployment system incorporated into our latest line of high altitude rocket kits. Using an altimeter, a small drogue chute is deployed at apogee allowing for a fast decent. At a user-selectable altitude, the altimeter fires a second charge, deploying the main chute allowing for a soft landing. The altimeter is centrally located in a special compartment within the main airframe. The drogue chute is ejected from a split-point in the airframe just above the fin/motor section while the main is ejected at the nose cone. Both chutes are deployed using our exclusive Piston Ejection System. Click the CPR System button in the webstore for more details.
DEPLOYMENT IGNITER SELECTION
Electric matches have a higher degree of reliability due to their more consistent current requirements. The Co-Pilot v3 altimeter that PML offers can be used with most low-current e-matches and flashbulbs. The resistance reading of what you intend to use is important. Here`s why:
E = I x R, where E is Voltage, I is Amperage, and R is resistance. We know the Voltage involved depending on the onboard battery. We also know from the specifications of the unit that the ignition device must fire with a certain amperage range. So, we need to find R, the Resistance, to determine which ignition device can work successfully with the device we intend to use.
Battery = 9 volts
Current = 1.25 amps
E = I x R, 9 = 1.25 x R; rearranging, we get R = 9/1.25 or 7.2 ohms. Your ignition device must be 7.2 ohms or more to work properly with the altimeter using a 9v. alkaline battery.
Igniter manufacturers will specify the electrical usability (ohms & volts) range for their devices; contact the igniter manufacturer for their specifications. We strongly recommend that you check each igniter you intend to use before flight to determine that it is good and within the ohm range needed. We also strongly recommend that you ground-test the electronic device you intend to use with the ignition device you intend to use before committing that combination for use in an actual flight. Ground testing instructions are included in our detailed instruction package provided with each of the Electronic Deployment Devices we sell.
Ematches vs. Igniters The difference between ematches and igniters is that ematches are intended to ignite an easy-to-burn substance quickly, such as the BP used in rocket ejection charges. Many Igniter require more power than many altimeters can safely produce. For the CoPilot v3, we recommend low current e-matches.
PML recommends the M-Tek or J-Tek series e-matches from MJG Technologies (www.electricmatch.com) for the CoPilot v3.