home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: rec.models.rockets
- Path: sparky!uunet!cs.utexas.edu!bcm!aio!sn.jsc.nasa.gov!JACKSON
- From: jackson@sn.jsc.nasa.gov
- Subject: Re: Igniters
- Message-ID: <1993Jan21.142728.16273@aio.jsc.nasa.gov>
- Sender: news@aio.jsc.nasa.gov (USENET News System)
- Reply-To: jackson@sn.jsc.nasa.gov
- Organization: Organization, City, State, etc.
- References: <1jkklvINNf0p@cuda.add.itg.ti.com>,<19930121072253.Roger.Wilfong@umich.edu>
- Date: Thu, 21 Jan 1993 14:27:28 GMT
- Lines: 35
-
-
- >The ignitor is innovative; however, the clip could stand improvement. It
- >looses its grip after a while and needs a clothes-pin helper and it needs
- >to be disassembled to clean the contacts thoroughly. Masking tape or
- >'Z' foling and micro clips is a more reliable attachment in my experience.
- ......................................................................
-
- I used up three Aerotech clips before I just disposed of them all.
- Now I just do the masking tape bit. I also buy sets of cheap alligator
- clip leads that clip onto my regular clips, since in general the
- copper head leads are never long enough to keep one from eventually
- destroying and kind of clip.
- (I wonder if Aerotech is aware of the flaw their clip design, or
- is this 'planned obsolence'
- >>
- .....................................
- I have had a problem with Aerotech RMS G motor loads and chuffing.
- Never had a problem with the E and F loads.
- I am not sure why this is. For the ISP loads since they are core-burners
- , I think all are, its easy to put a piece of thermalite boster on the
- CopperHead.
- Tho, I think I have notice that the wire-wrap themallite maybe works
- even better on these larger motors.
- I think that it takes more energy in an ignitor to lite off composite
- propellant than black powder. I think comercial motors really use
- 'hot' ignitors to make sure of ignition.
- I have found that the 'match head' squib types always work
- (of course can't work one of those into the C-slot on the
- RMS reloads.)
- There must be tons of reference material from gov and military work
- on how ignitors work with composite propellants.
- ...............................
-
-
-
-