Search found 16 matches

by brownms
Thu Oct 30, 2014 9:39 pm
Forum: Valveless pulsejet forum
Topic: The M25
Replies: 27
Views: 12585

Re: The M25

Thank you very much.

Regards

Mike
by brownms
Fri Nov 09, 2012 5:49 pm
Forum: Valveless pulsejet forum
Topic: "Thunderchine" 55 lb thrust pulsejet plans
Replies: 142
Views: 54161

Re: "Thunderchine" 55 lb thrust pulsejet plans

All parts of the tailpipe are welded on.
I just need to take care of an engine mount, spark plug mount and fuel system.
For the fuel system I'm using 2 x 12 gallon per hour flow rate oil spray nozzles
by brownms
Thu Nov 08, 2012 12:09 pm
Forum: Valveless pulsejet forum
Topic: "Thunderchine" 55 lb thrust pulsejet plans
Replies: 142
Views: 54161

Re: "Thunderchine" 55 lb thrust pulsejet plans

Almost complete.
IMAG0253a.jpg
by brownms
Tue Aug 28, 2012 11:13 am
Forum: Valveless pulsejet forum
Topic: "Thunderchine" 55 lb thrust pulsejet plans
Replies: 142
Views: 54161

Re: "Thunderchine" 55 lb thrust pulsejet plans

Combustion Chamber Bulkhead
by brownms
Tue Aug 21, 2012 4:44 pm
Forum: Valveless pulsejet forum
Topic: "Thunderchine" 55 lb thrust pulsejet plans
Replies: 142
Views: 54161

Re: "Thunderchine" 55 lb thrust pulsejet plans

New inlets and flares.
by brownms
Tue Jul 17, 2012 11:16 am
Forum: Valveless pulsejet forum
Topic: "Thunderchine" 55 lb thrust pulsejet plans
Replies: 142
Views: 54161

Re: "Thunderchine" 55 lb thrust pulsejet plans

Metiz...

As -built intake dimensions.


Mike
by brownms
Fri Jul 13, 2012 10:45 am
Forum: Valveless pulsejet forum
Topic: "Thunderchine" 55 lb thrust pulsejet plans
Replies: 142
Views: 54161

Re: "Thunderchine" 55 lb thrust pulsejet plans

Metiz...

As-built dimensions.

Mike
by brownms
Thu Jul 12, 2012 2:11 am
Forum: Valveless pulsejet forum
Topic: M500 build log
Replies: 161
Views: 53712

Re: M500 build log

What is a M500?
by brownms
Thu Jul 05, 2012 4:10 pm
Forum: Valveless pulsejet forum
Topic: "Thunderchine" 55 lb thrust pulsejet plans
Replies: 142
Views: 54161

Re: "Thunderchine" 55 lb thrust pulsejet plans

I designed my own Thunderchine model with Solidworks based on the Thunderchine plans. I printed a flat pattern cone (the part that the inlets weld to) to use as a temple for the sheetmetal. I fabricated and welded the cone without the inlet holes and then measured 75 degrees between hole centers. I ...
by brownms
Thu Jul 05, 2012 11:01 am
Forum: Valveless pulsejet forum
Topic: "Thunderchine" 55 lb thrust pulsejet plans
Replies: 142
Views: 54161

Re: "Thunderchine" 55 lb thrust pulsejet plans

I am currently building a Thunderchine.
I cut the inlet holes (in the combustion chamber cone) with an angle of 75 degees between the two.
This looks a lot closer than the plans suggest. Is this going to cause any problems?

Mike
by brownms
Wed Jun 20, 2012 12:23 am
Forum: Valveless pulsejet forum
Topic: "Thunderchine" 55 lb thrust pulsejet plans
Replies: 142
Views: 54161

Re: "Thunderchine" 55 lb thrust pulsejet plans

If the intake is a 1/4 wave resonator, this suggests a closed-end tube.
Does that mean that the length of the intake is calculated as the length of the intake tube plus the distance to the closed end of the combustion chamber?
by brownms
Mon Jun 18, 2012 1:13 am
Forum: Valveless pulsejet forum
Topic: "Thunderchine" 55 lb thrust pulsejet plans
Replies: 142
Views: 54161

Re: "Thunderchine" 55 lb thrust pulsejet plans

Hi Metiz... I have built an M-25, but not run it yet. Within the next few weeks hopefully. Correct me if I'm wrong, but the idea behind designing a well-running valveless pulsejet is to match the resonant frequencies of the various tubes that make up the unit. For example the M-25 is 1.036 m long, a...
by brownms
Tue Jun 12, 2012 12:32 am
Forum: Valveless pulsejet forum
Topic: "Thunderchine" 55 lb thrust pulsejet plans
Replies: 142
Views: 54161

Re: "Thunderchine" 55 lb thrust pulsejet plans

Do plans exist for a 25 lb thrust Thunderchine?
by brownms
Sat May 12, 2012 10:52 pm
Forum: Valveless pulsejet forum
Topic: More free plans: 40 pound Chinese
Replies: 182
Views: 718225

Re: More free plans: 40 pound Chinese

Hi Metiz/Pyro Joe... Few more questions: 1. Will a cylindrical combustion chamber work as well as the truncated cone combustion chamber? Advantages?/Disadvantages? 2. Have any of you guys tried direct fuel injection into the combustion chamber? Advantages?/Disadvantages? 3. Have you guys used full-c...
by brownms
Sat May 12, 2012 12:51 am
Forum: Valveless pulsejet forum
Topic: More free plans: 40 pound Chinese
Replies: 182
Views: 718225

Re: More free plans: 40 pound Chinese

Hi Metiz...

Your engine designs have two inlets. I understand Pyro Joe uses one inlet.
Will your engines work the same with one inlet of the same area as the two inlets?


Mike