Mark 1 is my first venture into making a pulsejet. To keep the use of lathe machine to a minimum, I decided to make the jet out of commonly available kitchenware items. I made a visit to the kitchenware shop nearby and fished out suitable materials for the build.  Before, I go into the blah, blah stuff,.. I need to tell you that Mark1-Pulsejet did not work properly. So, please don't search for the video at the end of the page.  Now, for the build thread.

This is called a chappathi roller (I guess there is no proper English word for this) 

Then, I found some 2.5 inch washers, a spark plug, a nut to hold the sparkplug, a fancy item just perfect for the fuel venturi. Note that two of the washers shown on the left are bored to make a larger hole. All the washers are drilled with 6 peripheral holes for coupling against each other. 

The following pictures show the assembly of the engine. Initially, I used a petal valve (as shown in the picture). This valve did not work well as it was very rigid and it heavily restricted the (air) flow area of the valve. As a result the pulsejet did not work properly. Also note the lousy welding between the front intake doom and the front washer. This is due to dissimilarity in the metal welded. The intake doom is brass while the washer is mild steel. However, the weld holds good for the initial experiments. 

This is a crude fuel venturi setup for this pulsejet. One of the tube connects to the fuel tank and the other is used to pump compressed air. Note that the compressed air is positioned right at the fuel nipple. I used a bicycle pump to blow air. For every stroke of the pump there will be a mist of fuel/air that would be pumped into pulsejet. Although, the concept seemed to be fine, it did not work well in reality. The most probable reason is that the airflow is not streamlined into the venturi opening. Further, being a small pulsejet the combustion did not generate enough venturi pressure to draw the fuel in. 

Since the petal valve did not work, I redesigned the valve with a single petal valve. This design was much better than the pervious one. However, the valve flow area is still on the lower side. As a rule of thumb the valve flow area should be 50% of the exhaust flow area. You could see in the pictures that the valve plate has been stained due to explosive combustion. 

  The above pictures show the setup that I used for starting the jet. After repeated attempts, I gave up on the efforts as it proved to be cumbersome task. The jet, however, ran for about 20 seconds with a constant air blast at the intake. Even though, this project was a failure, I learnt a lot of important things in constructing a pulsejet. Those learnings were put to use in the next Mark 2 - Pulsejet.