Proposed pressure tap for the M40
Posted: Thu Apr 23, 2015 2:54 pm
Hello All,
My name is Leron and I have been fascinated by the valveless pulsejet after reading about them on this site, so for my first pulse jet I decided to build the M40 (many thank's Metiz for the plans). I got it running at near idle last Sunday on propane and when I throttled it up the injectors melted because I did not realize that part of my assembly was made out of aluminum, so I am in the process of making new injectors. When I get the system stabilized I am going to run it off of gasoline. As you can see in the images below the entire system is overbuilt for experimentation and one of the things I need is a way to sense that the jet is running so in the last image I have drawn a proposed pressure tap, tank and transducer that would shut the fuel pump off if the pressure drops below a predetermined threshold. So my questions are:
A) Will tapping into combustion with a small line cause problems with the combustion cycle.
B) Given the way the pulse jet operates is there a danger of the proper amount of fuel and oxygen accumulating in the tank and exploding.
C) If the answers to A and B warrant such a modification, where would be the ideal place to tap the combustions chamber?
My name is Leron and I have been fascinated by the valveless pulsejet after reading about them on this site, so for my first pulse jet I decided to build the M40 (many thank's Metiz for the plans). I got it running at near idle last Sunday on propane and when I throttled it up the injectors melted because I did not realize that part of my assembly was made out of aluminum, so I am in the process of making new injectors. When I get the system stabilized I am going to run it off of gasoline. As you can see in the images below the entire system is overbuilt for experimentation and one of the things I need is a way to sense that the jet is running so in the last image I have drawn a proposed pressure tap, tank and transducer that would shut the fuel pump off if the pressure drops below a predetermined threshold. So my questions are:
A) Will tapping into combustion with a small line cause problems with the combustion cycle.
B) Given the way the pulse jet operates is there a danger of the proper amount of fuel and oxygen accumulating in the tank and exploding.
C) If the answers to A and B warrant such a modification, where would be the ideal place to tap the combustions chamber?