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AeroTech releases new Copperhead™ use document |
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2000 Archived News by AeroTech
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Wednesday, March 29, 2000 |
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LAS VEGAS, Nevada USA — AeroTech released today as part of their online support library a new document on using the Copperhead igniter. Often the topic of much discussion, the Copperhead had endured the enmity of flyers across the country as the primary igniter included with AeroTech single-use motors and reloadable motor kits.
Part of AeroTech's purpose in continuing to build their online resource center is to reduce, if not eliminate, confusion over using their products for the consumer, something this addition should help accomplish.
The document is made available in Adobe Portable Document Format (.pdf) by clicking here (36k). The balance of the text covered follows:
The AeroTech Copperhead igniter is different from other hobby rocket motor igniters both in form and function. Because of this, certain precautions must be observed if the user is to expect maximum reliability from the Copperheads. Please follow the following simple rules when using your Copperhead igniters:
- Handle Copperhead™ igniters carefully. The Copperhead lead consists of a mylar substrate with thin layer of copper foil applied to each side. Bending the lead sharply will cause the copper foil and/or pyrotechnic coating to break and the igniter to fail.
- Before installing the igniter in the motor, use a hobby knife to gently scrape both edges of the igniter lead. This removes small "threads" of copper foil occasionally left attached to the igniter during the manufacturing process. These threads can short out the igniter, preventing ignition.
- Bend the coated end of the igniter at a slight angle before installation to promote contact with the propellant surface.
- Ensure that the igniter is placed at the head (bulkhead) end of the propellant grain.
- When securing the igniter to the motor nozzle, do not push the igniter cap on the nozzle any more than neccesary to hold the igniter in place. Pushing the cap on too tightly can cause the copper foil on the igniter lead to crack and the igniter to fail.
- Use the AeroTech Interlock™ igniter clip for hookup whenever possible.
- If using standard "micro-clips" for igniter hookup, ensure that only one jaw from each clip contacts each side of the igniter lead. This can be accomplishied by applying a
piece of masking tape to each opposite side of the igniter lead where the clip jaws are to be attached. - Do not attach the Interlock or other igniter clip to the igniter until just before launch after the rocket is on the pad. The weight and motion of the dangling clip(s) can cause the copper foil on the igniter lead to crack and the igniter to fail.
- Make sure that your launch controller power supply is capable of delivering 12 volts at a minimum of 3 amps to the igniter.
- NEVER use Copperhead igniters in motor clusters.
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