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Model Forum / General / Rockets / August 2004New Data
I just uploaded some data on igniters. It's in the "Research" area of the rocketmaterials website. Any comments? Should I continue the project? Doc  SignatureDrake "Doc" Damerau www.rocketmaterials.com NEPRA President NAR Section 614 NAR 79986 L3 www.nepra.com Remove "My Shorts" to reply >I just uploaded some data on igniters. It's in the "Research" area of the >rocketmaterials website. Any comments? Should I continue the project? > >Doc A few things come to mind. How long does it take the thermocouple to react? How hot for how long do things have to be to ignite a motor? Does the composition of the sparks given off by the ignitor affect the ability to ignite the motor? The splash patterm / area of the flame / sparks will probably affect this. Is there a way to quantify this? This seems like a worthwhile project. Maybe a measurement of how quickley each ignitor actually lights the same motors is a good way to measure it. I'm thinking a an input to show when voltage was applied in conjunction with pressue readings and output from a load cell would be good. Phil > >I just uploaded some data on igniters. It's in the "Research" area of the > >rocketmaterials website. Any comments? Should I continue the project? [quoted text clipped - 20 lines] > > Phil Excellent questions! (I'd expect nothing less.) I'll keep playing and see if I can quantify some of them. Doc SignatureDrake "Doc" Damerau www.rocketmaterials.com NEPRA President NAR Section 614 NAR 79986 L3 www.nepra.com Remove "My Shorts" to reply >> >I just uploaded some data on igniters. It's in the "Research" area of the >> >rocketmaterials website. Any comments? Should I continue the project? [quoted text clipped - 26 lines] > >Doc I'm slowly putting together a test stand that would be good. Have any Al scrap floating around up there? I have a load cell & pressure xducer. This cut on my finger is sure messing up my typing. > >> >I just uploaded some data on igniters. It's in the "Research" area of the > >> >rocketmaterials website. Any comments? Should I continue the project? [quoted text clipped - 32 lines] > > This cut on my finger is sure messing up my typing. The only Al scrap I have is 105mm boat tails for the M915. Here's a picture: http://www.cmcscr.org/m915.htm It would have to be demilled so I would have to drill a hole in the middle, Something like a 38mm or 54mm hole would work. :-) Doc SignatureDrake "Doc" Damerau www.rocketmaterials.com NEPRA President NAR Section 614 NAR 79986 L3 www.nepra.com Remove "My Shorts" to reply Those would work. >> >> >I just uploaded some data on igniters. It's in the "Research" area of >the [quoted text clipped - 41 lines] > >Doc > This cut on my finger is sure messing up my typing. If it's one of those nasty paper cuts, try a drop of CA to fix it. Bob Kaplow NAR # 18L TRA # "Impeach the TRA BoD" >>> To reply, remove the TRABoD! <<< Kaplow Klips & Baffle: http://nira-rocketry.org/LeadingEdge/Phantom4000.pdf www.encompasserve.org/~kaplow_r/ www.nira-rocketry.org www.nar.org Save Model Rocketry from the HSA! http://www.space-rockets.com/congress.html >> This cut on my finger is sure messing up my typing. > [quoted text clipped - 6 lines] > > Save Model Rocketry from the HSA! http://www.space-rockets.com/congress.html Then what do I do when I want to press another letter or am done typing? 8-) David at Quickburst enjoyed the review. I would imagine he might provide with you with some test product for further info. He provides on-site sales at Texas launches and I have never seen a Quickburst fail to light a reload no matter who makes it. > > >I just uploaded some data on igniters. It's in the "Research" area of the > > >rocketmaterials website. Any comments? Should I continue the project? [quoted text clipped - 26 lines] > > Doc > David at Quickburst enjoyed the review. I would imagine he might provide > with you with some test product for further info. > He provides on-site sales at Texas launches and I have never seen a > Quickburst fail to light a reload no matter who makes it. I'll add that everyone I've used worked. One of the reasons for the thin amount of data points is cost. It can get expensive just burning igniters for fun. I will be testing another Magnalite this afternoon but with an ultra thin thermocouple. This will show if the thickness of the thermocouple is effecting the test results. He is welcome to send any samples he wishes. I'll test them all using any method he wishes. Any other igniter makers out there want to participate? Doc SignatureDrake "Doc" Damerau www.rocketmaterials.com NEPRA President NAR Section 614 NAR 79986 L3 www.nepra.com Remove "My Shorts" to reply > > > >I just uploaded some data on igniters. It's in the "Research" area of > the [quoted text clipped - 27 lines] > > > > Doc I will forward the info to him. I was at a launch with him today and he told him about it. He enjoyed the data. > > David at Quickburst enjoyed the review. I would imagine he might provide > > with you with some test product for further info. [quoted text clipped - 46 lines] > > > > > > Doc > I will forward the info to him. I was at a launch with him today and he told > him about it. He enjoyed the data. I would too! At this point, it looks like he has the hotest igniters. Doc SignatureDrake "Doc" Damerau www.rocketmaterials.com NEPRA President NAR Section 614 NAR 79986 L3 www.nepra.com Remove "My Shorts" to reply > > > David at Quickburst enjoyed the review. I would imagine he might provide > > > with you with some test product for further info. [quoted text clipped - 53 lines] > > > > > > > > Doc |
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