@z no, the seams do leak a bit but we use far, far more air for actuation than we leak.
The blowers are commercial bouncy castle blowers, usually, they have the right kind of pressure and flow rate.
What kind of thing are you thinking of making?
@z :-) Good luck! I like the sound of the projection mapping.
One thing to know is that the stress in the fabric is proportional to the diameter of the inflated thing, so as you go to bigger things you need more reinforcement or stronger fabric.