What kind of batteries are best for a model rocket launch controller?
batteries August 5th, 2009I’m planning on building a new model rocket launch controller, and I need help deciding what kind of batteries to use. The controller will have 150ft of 16 gauge wire going to the rocket and about three different buttons/ switches on the controller itself. What kind of batteries and voltage would I need to guarantee a proper launch every time? I’d rather not use a car battery and I’ve heard that 12v of AA batteries would not get the job done. Thanks for any help.
May I suggest that stranded (not solid) 18 AWG is better. Also you need a safety lock-out key and only one firing switch/button, not 3. Keep it simple. Keep it safe.
150 ft. of wire? You must be launching a big rocket. Better check to see that you are within Tripoli and NAR guidelines. 6 volts equals 4 AA batteries Why not use rechargeables? Better yet… why not invest in a small 12 volt rechargeable lantern battery? That will last 50 -100 launches without recharging. It will ensure enough power gets to your launch pad.
August 5th, 2009 at 8:58 pm
You should really consider using a pretty heavy-duty battery if you need to push amps that far. Look into using a 12v sealed lead-acid battery, such as one used in a computer uninterruptible power supply (UPS) or an alarm system. You can find these in some electronic stores like Radio Shack, or you can get them online (but of course, shipping will be a bear). You may also be able to find them in a specialty battery store like Batteries Plus.
Alternately, you could use a lawn tractor battery. It stilll gives you PLENTY of power and you can launch pretty much anything. And, they’re easy to recharge. Many rocketry clubs use this method.
Good luck, fly safe and have fun!
References :
August 5th, 2009 at 9:13 pm
May I suggest that stranded (not solid) 18 AWG is better. Also you need a safety lock-out key and only one firing switch/button, not 3. Keep it simple. Keep it safe.
150 ft. of wire? You must be launching a big rocket. Better check to see that you are within Tripoli and NAR guidelines. 6 volts equals 4 AA batteries Why not use rechargeables? Better yet… why not invest in a small 12 volt rechargeable lantern battery? That will last 50 -100 launches without recharging. It will ensure enough power gets to your launch pad.
References :
40+ years of model rocket experience, http://www.groups.yahoo.com/group/dakthunder , http://www.tripoli.org, http://www.nar.org
August 5th, 2009 at 9:18 pm
You can use a rechargeable battery form a portable drill. AA batteries will not be enough amps.
References :