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This site was created as a resource for anyone interested in hobby rocketry in central Indiana.

This is also the source for information on the Rocketeers Of Central Indiana (ROCI), Section #625 of The National Association of Rocketry (NAR). Feel free to check here for information about ROCIs launch events. The launch events are conducted throughout the warmer months at the Academy of Model Aeronautics' Headquarters and Aeromodeling Center in Muncie, Indiana. This facility is the finest flying field in the state and ROCI is proud to be the exclusive host of the rocketry events held there. ROCI is not currently conducting meetings as we have lost our meeting place.

Registered users of this site are free to visit our forum pages to discuss rocketry topics and share information with other members.

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New launch equipment

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New launch equipment 1 year 7 months ago #2696

We need to gather up our bills from all the work at NARAM, and see where we stand. I'm sure we are in the hole--I just don't know how deep is the hole.

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New launch equipment 1 year 7 months ago #2697

I am in, let me know when and where - also if you need any parts/wire, etc. I have a pretty good stash of MOSFETS, transistors, and passive components, along with a fair amount of wire.

Cheers / Robert
Cheers / Robert

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New launch equipment 1 year 7 months ago #2698

I'm open to any input you may have on MOSFETs.

If it makes things easier I can draw up what I plan to do and post images here for feedback. That would open it to more people but it would be a bit slower. I'm having foot problem at the moment so I'm not going many places

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New launch equipment 1 year 7 months ago #2699

I'm good with on the BB (forum).

Cheers / Robert
Cheers / Robert

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Last edit: by Robert Bantly. Reason: clarity.

New launch equipment 1 year 7 months ago #2700

How about IGBT's (insulated gate bipolar transistors)? These are typically used in low frequency, high power switching applications. Durable as an old bipolar transistor and voltage-controlled like a MOSFET without the sensitivity to static Probably almost a drop-in, they need the same pull down resistor, etc as a MOSFET does and are voltage only drive signal like a MOSFET. I don't know how many you need for the circuit but I have 4 50A rated IXYS top quality ones in the shop. When I get home from work will check stock on all switching devices. Also have some aluminum heat-sink material I got via salvage.

Cheers / Robert
Cheers / Robert

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New launch equipment 1 year 7 months ago #2701

Have:

10 IRFZ48PBF Vishay N-channel enhancement MOSFETS (50A)
These are high power + drain switching devices and are free - ordered incorrectly : / from a previous project. Gotta be careful with accidental dyslexia when ordering semiconductors...

High current rating is with a fan-driven heat-sink. Rocket igniters are high current but well less than 0.5 seconds on a car battery so they should survive with a good chunk of aluminum bolted on. I will continue to look through the shop but will wait for plan posting. There should be some sort of built-in protection for the clips falling and hitting the deflector if the semiconductor is a direct switch to igniter.

www.mouser.com/datasheet/2/427/91294-23324.pdf

www.learningaboutelectronics.com/Articles/N-Channel-MOSFETs

Cheers / Robert
Cheers / Robert

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Last edit: by Robert Bantly. Reason: clarity
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