A mobile projectile launcher is disclosed having a tiltable launching platform for supporting a plurality of canisters in each of which projectiles to be launched are stored and fired, a support plate pivotally connected to a horizontal cargo bed, and at least one linear actuator by which the support plate is swingable from a closed position substantially perpendicular to the cargo bed to an open position substantially parallel to the cargo bed. The support plate is made of a material that is resistant to the projectile plume following launching and is sufficiently sturdy to support a technician during the loading of projectiles when set in an open position, yet is adapted to protect and hide the loaded canisters when set in a closed position.