Search found 7 matches
- Mon Jan 09, 2017 12:28 pm
- Forum: Pressure jet forum
- Topic: see running new type of pressure jet - methanol fuel
- Replies: 34
- Views: 41146
Re: old images from 90's
hi all, see our trials from early 90's The 25N engine seems to have benefited from small inlet area / good matching with injector. But why you choose large combustor diameter and length, for gas dynamic purpose, stable combustion, or more surface of heat exchange? Older engines have problem of comb...
- Mon Jan 09, 2017 12:23 pm
- Forum: Pressure jet forum
- Topic: see running new type of pressure jet - methanol fuel
- Replies: 34
- Views: 41146
Re: see running new type of pressure jet - methanol fuel
Hi Viv thanks for these patents ! on the first look it seems similar to my engine. but we need no oxygen, and we have only one-stage-injector for example. I will study this very thoroughly. I attach the old simulation code (pascal as ascii text file) to this post. unfortunately comments are in germ...
- Sun Jan 03, 2010 1:59 pm
- Forum: Valveless pulsejet forum
- Topic: Please put your "I am new and need help" question here.
- Replies: 404
- Views: 1947801
Re: Please put your "I am new and need help" question here.
already tried, rich fuel flame out
now looking for suitable air source to start a "Chinese CS" type liquid fuel system
maybe a bike tire hand pump.
now looking for suitable air source to start a "Chinese CS" type liquid fuel system
maybe a bike tire hand pump.
metiz wrote:you could try flipping the bottle upside down to give it liquid but I don't think it'll work
- Sun Jan 03, 2010 6:46 am
- Forum: Valveless pulsejet forum
- Topic: Please put your "I am new and need help" question here.
- Replies: 404
- Views: 1947801
Re: Start a valveless pulsejet with electric ducted fan?
Could electric ducted fan replace leaf blower to start a valveless pulsejet (mini thermojet)? I don't have propane tank or leaf blower. Use butane lighter refill bottle + rosscojector, the engine failed to start Well, a leaf blower is in fact also a ducted fan... I think the problem is in the light...
- Sat Jan 02, 2010 2:52 pm
- Forum: Valveless pulsejet forum
- Topic: Start a valveless pulsejet with electric ducted fan?
- Replies: 1
- Views: 2669
Start a valveless pulsejet with electric ducted fan?
Could electric ducted fan replace leaf blower to start a valveless pulsejet (mini thermojet)?
I don't have propane tank or leaf blower.
Use butane lighter refill bottle + rosscojector, the engine failed to start
I don't have propane tank or leaf blower.
Use butane lighter refill bottle + rosscojector, the engine failed to start
- Fri Jan 01, 2010 7:51 am
- Forum: Valved pulsejet forum
- Topic: The Cybernetics of a Pulse Combustor
- Replies: 28
- Views: 2831132
Re: The Cybernetics of a Pulse Combustor
Some professional research http://www.ncbi.nlm.nih.gov/pubmed/12779686 Maintenance of chaos in a computational model of a thermal pulse combustor Chaos. 1997 Dec;7(4):605-613. Maintenance of chaos in a computational model of a thermal pulse combustor. In V, Spano ML, Neff JD, Ditto WL, Daw CS, Edwar...
- Fri Jan 01, 2010 7:41 am
- Forum: Valved pulsejet forum
- Topic: Several questions about design
- Replies: 11
- Views: 10987
Re: Several questions about design
a question on TSFC calculation The following reserch paper stated the exit gas velocity of a dynajet-type pulse combustor varies from 40m/s to 130m/s in a cycle, and the average value is smaller than 100m/s. velocity.JPG http://serve.me.nus.edu.sg/arun/file/teaching/ME6024/Basics%20of%20Pulse%20Comb...