Search found 1743 matches
- Fri May 31, 2013 1:48 pm
- Forum: Valveless pulsejet forum
- Topic: M500 build log
- Replies: 161
- Views: 158277
Re: M500 build log
"And those are placed inside the intake? One problem I can see happening is the the fuel exits the holes in a laminar fashion" The spray bar is probably good for fluids of low density that have viscosity properties that allow it to break up the laminar flow immediately after exiting. Alcohols appear...
- Mon May 20, 2013 1:30 pm
- Forum: Valveless pulsejet forum
- Topic: M500 build log
- Replies: 161
- Views: 158277
Re: M500 build log
It is a simple tube drilled with holes. Attached is the one that Keith posted. Throttle is varied by changing the applied fuel pressure. Smaller holes allow it to maintain spray at lower pressures. The problem with smaller holes is they tend to clog easily. The pattern the holes are drilled can fan ...
- Fri May 17, 2013 9:52 pm
- Forum: Valveless pulsejet forum
- Topic: M500 build log
- Replies: 161
- Views: 158277
Re: M500 build log
I'm thinking spray bar similar to what Keith Mcconnell did with his spray bar. I have purchased a small drill that can be used with precision. Pen Drills. They have some very small sized drill bits. Once you have your pump you can test the flow rate in a bucket and slowly add more holes to bring it ...
- Fri May 17, 2013 3:58 pm
- Forum: Valveless pulsejet forum
- Topic: Lockwood Pulse Jet won't sustain
- Replies: 31
- Views: 26982
Re: Lockwood Pulse Jet won't sustain
congratulations!
- Fri May 17, 2013 3:43 pm
- Forum: Valveless pulsejet forum
- Topic: M500 build log
- Replies: 161
- Views: 158277
Re: M500 build log
What is the pressure your pump can sustain at 3.3 L/min. ?
- Thu May 16, 2013 5:54 pm
- Forum: Valved pulsejet forum
- Topic: Dyna-Jet book
- Replies: 12
- Views: 12877
Re: Dyna-Jet book
Jerry,
Where do we order your books from?
Where do we order your books from?
- Thu May 16, 2013 5:48 pm
- Forum: Valved pulsejet forum
- Topic: Planing for next years speed weekend, (1/2 scale Argus)
- Replies: 111
- Views: 127282
Re: Planing for next years speed weekend, (1/2 scale Argus)
Good job at Orsa. I know you are looking to decrease the weight of the vehicle and make it more aerodynamic. Make sure to keep your center of gravity low as you shave the weight.
- Thu May 16, 2013 5:38 pm
- Forum: Valveless pulsejet forum
- Topic: M500 build log
- Replies: 161
- Views: 158277
Re: M500 build log
Any updates?
- Thu May 16, 2013 5:37 pm
- Forum: Valveless pulsejet forum
- Topic: More in the saga of Thermo-Jam ( and other musings )
- Replies: 30
- Views: 35119
Re: More in the saga of Thermo-Jam ( and other musings )
Thanks for the dimensions.
- Thu May 16, 2013 5:33 pm
- Forum: Tools and Construction
- Topic: Odds and ends
- Replies: 1850
- Views: 828649
Re: Odds and ends
Nice work, these latest ones have been awesome. Did that last one run out of fuel?
- Thu May 10, 2012 6:17 pm
- Forum: Tools and Construction
- Topic: Cutting noise
- Replies: 37
- Views: 38191
Re: Cutting noise
Ed Zachary? Is that really where you want to go with this?
Good god we're at cancelling again? I give thanks to Viv for leading me to water. And to M, I get it now.
Good god we're at cancelling again? I give thanks to Viv for leading me to water. And to M, I get it now.
- Thu May 10, 2012 3:44 pm
- Forum: Tools and Construction
- Topic: Cutting noise
- Replies: 37
- Views: 38191
Re: Cutting noise
A question presents itself, if 0 psi overpressure is achieved, is anything reflected at the tailpipe opening?
- Thu May 10, 2012 2:20 pm
- Forum: Valveless pulsejet forum
- Topic: PulseJet starting problem
- Replies: 4
- Views: 6297
Re: PulseJet starting problem
What are the current dimensions? Are they the same as before?
- Thu May 10, 2012 1:28 pm
- Forum: Tools and Construction
- Topic: Cutting noise
- Replies: 37
- Views: 38191
Re: Cutting noise
The more I look at it, it appears it could benefit from the head pressure from motion, that could give the fresh air load a couple extra pounds. Also a long CC would allow a higher fill ratio of fresh air up front in that area. The flame travel would shift deeper in the engine, and some drift veloci...
- Wed May 09, 2012 8:58 pm
- Forum: Tools and Construction
- Topic: Cutting noise
- Replies: 37
- Views: 38191
Re: Cutting noise
I may have missed something. If thats supposed to be a spring, I see it as subordinate to the CC pressure, which makes the spring loaded from the CC gas as thats the most significant pressure source. If it is to work as a fresh air spring, that would require the spring to be loaded with fresh air to...