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Model Forum / General / Rockets / February 2007[Planet News] NO MATCH™ Ejection System eliminates electric matches
Press Release by NO MATCH Ejection Systems Wednesday, February 21, 2007 LAS VEGAS, Nevada USA — Oliver Schubert has just announced the availability of his new NO MATCH Ejection System. With the cost of electric matches, and in some instances federal requirements, a new method of ejection charge ignition needed to evolve. NO MATCH is the answer. Utilizing a standard glow plug from a model gasoline engine, the system can be used over and over, reducing costs over an entire flying season. The unit is small, just 2" x 1-1/4", and can be fit into just about any configuration. It can be non-destructively tested over and over with no expense or damage. The built in electronics can accommodate two isolated altimeters for sure-fire redundancy. No extra batteries are needed to fire the system and the single, provided battery activates 500+ firings. No BATF license or requirements are called for. Specifications: o Size: 2.125" x 1.25" [54mm x 29mm] o Weight: 1.3oz [38g] (with battery) o Battery: CR123 Lithium o Firings: >500 per battery o Powder Capacity: ~2g (can be increased on special request) o Blast Tube Thread: 1/4" - 32 TPI (5/32" [4mm] deep) o Altimeter Connections: 2 with isolating protection built in o Maximum Trigger Time: 2 seconds o Trigger Voltage: 4.5V - 9V o Trigger Current Draw: 3mA - 6mA (0.003A-0.006A) NO MATCH does not require any machining by the end-user. This is a solution for the future, available now at: http://www.lvhq.net/NoMatch Image at: http://www.rocketryplanet.com/content/view/1705/28/  SignatureRocketry Planet — hobby rocketry news, feature articles, news archive, discussion forums, live chat, free auctions, launch calendar and the largest collection of web links anywhere! http://www.rocketryplanet.com while I think this is good idea, ie using a glo-plug instead of an ematch/igniter( I would how long it will take the BATFE to come to the conculsion that glo-plugs are igniters) , what would really be a solution for the future, would be some form on non-pyrotechnic means, ie no BP. For example, ever heard of NITINOL wire? My solution would be to use an altimiter's electrical output be used to make the nitinol wire release a compressed spring.....or you could have the sping in compressed mode and the electrical output would cause the spring to release immediately.... there you go: A completely non-pyrotechnic means to eject parachutes.... your welcome terry dean nar 16158 Signature"Old Rocketeer's don't die; they just go OOP" > Press Release by NO MATCH Ejection Systems > Wednesday, February 21, 2007 [quoted text clipped - 35 lines] > > Image at: http://www.rocketryplanet.com/content/view/1705/28/ > while I think this is good idea, ie using a glo-plug instead of an ematch/igniter( I would how long it will take the BATFE to > come to the conculsion that glo-plugs are igniters) , what would really be a solution for the future, would be some form on [quoted text clipped - 10 lines] > terry dean > nar 16158 ----------- Well springs might work for Mod Rock, or LMR, but HPR would need a hell of a spring. I had thought about using CO2 cartridges to blow a piston ejection system. Or, If you ever get a chance to see how the Shuttle SRB's de- ploy their chutes, you'll see that the 'nose cone' drags a drogue out that, in turn, drags the main chute out. You could set up two smaller inner tubes inside the main air frame.. have them contact the bottom of the cone. At apogee, blow your CO2 carts, blowing the nose cone to drag out a drogue... dragging out the main chute. Your spring would then only need be strong enough the poke a hole into the CO2 carts. HDS hds: thats a good idea, use the nitinol spring/latch to open the Co2 cans.... terry dean nar 16158 Signature"Old Rocketeer's don't die; they just go OOP" >> while I think this is good idea, ie using a glo-plug instead of an >> ematch/igniter( I would how long it will take the BATFE to come to the [quoted text clipped - 32 lines] > > HDS > while I think this is good idea, ie using a glo-plug instead of an > ematch/igniter( I would how long it will take the BATFE to come to the > conculsion that glo-plugs are igniters) , what would really be a solution > for the future, would be some form on non-pyrotechnic means, ie no BP. Aside form regulating model airplanes (which the JBGTs probably want to do) it would also regulate many home furnaces. And fall WAY outside the bounds of their charter. Glow plugs are certainly not intended to explode. SignatureBob Kaplow NAR # 18L >>> To reply, there's no internet on Mars (yet)! <<< Kaplow Klips & Baffle: http://nira-rocketry.org/Document/MayJun00.pdf www.encompasserve.org/~kaplow_r/ www.nira-rocketry.org www.nar.org S&T is becoming this decades Steve Weaver! >For example, ever heard of NITINOL wire? My solution would be to use an >altimiter's electrical output be used to make the nitinol wire release a >compressed spring.....or you could have the sping in compressed mode and >the electrical output would cause the spring to release immediately.... I keep thinking about various methods to use CO2 cannisters. By combining the 'Eject-o-Matic' servo driver with a type of air-switch that R/C aircraft use for pneumatic landing-gear retracts, you get a completely pyro-free ejection system. Now... somebody just needs to produce a flight computer that lets you directly access the output line that fires the pyro channels... :-) > Now... somebody just needs to produce a flight computer that lets > you directly access the output line that fires the pyro channels... > :-) What does that mean? >> Now... somebody just needs to produce a flight computer that lets >> you directly access the output line that fires the pyro channels... >> :-) > > What does that mean? You know... after reading it again, I'm not really sure myself. :-? > >> Now... somebody just needs to produce a flight computer that lets > >> you directly access the output line that fires the pyro channels... [quoted text clipped - 4 lines] > You know... after reading it again, I'm not really sure myself. > :-? 8-) Did you mean the logic-level signal? Or did you mean being able to program the thing yourself? Or possibly reaching out spiritually to be ONE with the output line? A Spock mind meld? -jd >>>> Now... somebody just needs to produce a flight computer that lets >>>> you directly access the output line that fires the pyro channels... > Did you mean the logic-level signal? That would be a useful feature. The old Adept ASA3 acceleration switch and ASA3T timer had logic pins, very useful for triggering other electronics without worry about excess voltage. Steve Humphrey >> >> you directly access the output line that fires the pyro channels... > Did you mean the logic-level signal? Or did you mean being able to The logic-level signal seems to make the most sense. :-) The article I saw on the Eject-o-Matic required soldering a wire to the altimeter - *before* the MOSFET gate - to drive the 555 timer appropriately. But later, I got to thinking... an opto-isolator could be connected to an existing pyro output, and feed the proper signal to any additional circuitry that way. I don't know what it means either... I do know the electronics needs a programmable timing function, and an output.... the nitinol wire just needs to be heated by the output of say supercapacitors..... surely you guys can create something like this? The nitinol wire it self can act as a latch, a pin, a spring whatever.... terry dean nar 16158 Signature"Old Rocketeer's don't die; they just go OOP" >> Now... somebody just needs to produce a flight computer that lets >> you directly access the output line that fires the pyro channels... >> :-) > > What does that mean? or wouldn't the electrical power output from a typical altimeter, be enough to heat the nitinol wire? Thats all thats needed. Heating the wire inititates whatever form or function it performs....like releasing the gas from a C02 cannister? terry dean nar 16158 Signature"Old Rocketeer's don't die; they just go OOP" >I don't know what it means either... > [quoted text clipped - 12 lines] >> >> What does that mean? >while I think this is good idea, ie using a glo-plug instead of an >ematch/igniter( I would how long it will take the BATFE to come to the [quoted text clipped - 12 lines] >terry dean >nar 16158 A glow plug (like many igniters we use) just puts electricity to a nichrome (or similar substance) wire. That is how the heating elements in many home appliances work. I don't think anything is going to be done to prevent the use of that alone. |
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