Search found 10 matches

by Storm
Sun Apr 22, 2012 4:53 pm
Forum: Valveless pulsejet forum
Topic: PyroJoes Recipe for Beginners
Replies: 209
Views: 1711509

Re: PyroJoes Recipe for Beginners

Ok so does the exhausting gas through the tail move at a higher velocity than the exhausting gas through the intake as in ganuganus animation?

I thought this one by Eric Beck was very good!
http://www.youtube.com/watch?v=cFK2B6txOL8
by Storm
Sun Apr 22, 2012 10:29 am
Forum: Valveless pulsejet forum
Topic: PyroJoes Recipe for Beginners
Replies: 209
Views: 1711509

Re: PyroJoes Recipe for Beginners

Ganuganu, is this idea that the velocity of the exhaust gas is faster than the intake gas true? Also your animation explains no aerodynamic "valving" as PyroJoe was pointing out. Thankyou PyroJoe it is very easy to understand, I was thinking of using a concept to create a vortex to increase valving ...
by Storm
Thu Apr 19, 2012 2:30 pm
Forum: Valveless pulsejet forum
Topic: Please put your "I am new and need help" question here.
Replies: 374
Views: 1758681

Re: Please put your "I am new and need help" question here.

Thankyou for taking the time to help me PyroJoe.
by Storm
Thu Apr 19, 2012 1:55 pm
Forum: Valveless pulsejet forum
Topic: Please put your "I am new and need help" question here.
Replies: 374
Views: 1758681

Re: Please put your "I am new and need help" question here.

This is what I had in mind for the CC, I got excited early (weeks ago) and drilled a TLAR 2.5" (60mm) hole in it for the exhaust before considering the requirements, hense my queries. I havn't drilled or decided upon intake(s), as this was an experimental ie: not intended for any practical use I was...
by Storm
Thu Apr 19, 2012 12:07 pm
Forum: Valveless pulsejet forum
Topic: Please put your "I am new and need help" question here.
Replies: 374
Views: 1758681

Re: Please put your "I am new and need help" question here.

Yes that is a neat one. I wonder how it compares to other shapes, the thread doesn't expand on performance, I like how the tail flairs from the start. I had seen the small one on youtube http://www.youtube.com/watch?v=1QD7U0ogXWM How did you come up with the figures for the 5 Liter CC? Any insight i...
by Storm
Wed Apr 18, 2012 3:51 pm
Forum: Valveless pulsejet forum
Topic: Please put your "I am new and need help" question here.
Replies: 374
Views: 1758681

Re: Please put your "I am new and need help" question here.

Can you please help me understand the relationships between various parts some more? Researching your recipe again PyroJoe and not knocking it just trying to understand the basics here, you say in your opening post there are variations used to achieve different engine objectives (like differing boat...
by Storm
Mon Apr 16, 2012 2:15 am
Forum: Valveless pulsejet forum
Topic: Please put your "I am new and need help" question here.
Replies: 374
Views: 1758681

Re: Please put your "I am new and need help" question here.

Thankyou PyroJoe, A quick google search shows the basic Helmholtz resonators to be spherical in shape. http://physics.kenyon.edu/EarlyApparatus/Acoustics/Helmholtz/Grinnell15a.JPG Helmholtz Resonators. Where these 2 peice sliding cylindrical resonators are used to aid tuning to find a frequency http...
by Storm
Thu Apr 12, 2012 3:27 pm
Forum: Valveless pulsejet forum
Topic: Please put your "I am new and need help" question here.
Replies: 374
Views: 1758681

Re: Please put your "I am new and need help" question here.

Thankyou for replying, your answers are good and appreciated, the questions can only be answerd through trial and error which I have none (except JJs) so I humbly ask those who have come before me. Metiz I have read all pages of PyroJoes recipe, Mikes Blended bodies and various notes on Kentfield an...
by Storm
Fri Mar 30, 2012 1:51 pm
Forum: Valveless pulsejet forum
Topic: Please put your "I am new and need help" question here.
Replies: 374
Views: 1758681

Re: Please put your "I am new and need help" question here.

Hi I am new here, Thank you to the many informative members. I have Some questions: Is there any recipe for starting build from a known combustor volume, regardless of shape? Thrust to Size: Are larger engines exponentially more powerfull than smaller engines? Blended bodies ie... multiple intakes a...