my first ramjet
Moderator: Mike Everman
my first ramjet
hi i'm new, but i've recently built a ramjet from 16 gauge mild steel. I used alot of ideas from the maggie muggs, and glenn olsen
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- the cones before final welding, sizes, diffuzer 1.5in entrance 3.0in exit 4in lenth, CC 3.0in dia. 4.5in lenth. nozzle 3in entrance 2.125in exit.
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- final welding on body is done
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- the inital design was changed for a removable flameholder design by cutting the diffuzer and part of the CC
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- the mock up for the removable flameholder design, a ring of metal that slips over the CC.
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- the finished design minus flameholder.
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- stands are made.
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- the finished stands.
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- the flameholder (later modified), fits inside the ring on the diffuzer which butts up againist the CC.
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- the finished product.
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- the retention screws are installed
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love, peace and chicken grease.
the rest. video coming soon.
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- the fuel tube and needle valve.
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- a different flame holder covers 30% CC cross area.
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- ready to test.
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- best run of the day
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love, peace and chicken grease.
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- Location: Mingo, Iowa USA
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jimbob -
Man, that is fabulous!
NICE JOB! Hope you can get the videos set up soon. What power is your blower, and what flow speed is claimed for it?
You nicely fixed the three greatest flaws in my original Maggie design: The suboptimal diffuser, the crude flameholder, and (of course) the glued construction. Looks like you ended up with something you can really be proud of!
Congratulations!
L Cottrill
Man, that is fabulous!
NICE JOB! Hope you can get the videos set up soon. What power is your blower, and what flow speed is claimed for it?
You nicely fixed the three greatest flaws in my original Maggie design: The suboptimal diffuser, the crude flameholder, and (of course) the glued construction. Looks like you ended up with something you can really be proud of!
Congratulations!
L Cottrill
thanks larry, i'm using 250 mph electric blower but i have a speed control so i
have compleatly adjustable speed, so far i can only get up to less than half thottle before a flameout, i think i need more fuel, i have a propane regulator setup so i have as much pressure as i need, but my fuel orffice is only .056 in
but i also need to "port" the valve body out. also i am making a thrust cart as i speak.
have compleatly adjustable speed, so far i can only get up to less than half thottle before a flameout, i think i need more fuel, i have a propane regulator setup so i have as much pressure as i need, but my fuel orffice is only .056 in
but i also need to "port" the valve body out. also i am making a thrust cart as i speak.
love, peace and chicken grease.
heres a vid
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- ramjet001 small.wmv
- this is the first run with a .030 in fuel orffice. the flame looks way better now. to bad theres no sound.
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love, peace and chicken grease.
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- Posts: 4140
- Joined: Sun Oct 05, 2003 1:17 am
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- Location: Mingo, Iowa USA
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Yes, very nice indeed! That's really a nice air source to have available.
Just curious: Why is there NOT sound on the video file? Every once in a while someone posts a silent video, and I'm never sure why this is the case.
A nice picture of your engine in action, though! With the air source you have, you might be able to do one even larger someday.
L Cottrill
Just curious: Why is there NOT sound on the video file? Every once in a while someone posts a silent video, and I'm never sure why this is the case.
A nice picture of your engine in action, though! With the air source you have, you might be able to do one even larger someday.
L Cottrill