The Wurfrahmen 40 ("launch frame 40") was a German World War II multiple rocket launcher.
Although spin stabilized, the rockets were not as accurate as conventional artillery, and reloading was time-consuming due to their weight.
Where feasible, rockets were ripple-fired in large numbers to quickly saturate a target.
The system was successful as a support weapon for mobile Panzer formations, particularly in urban areas.
Some captured American M3 halftracks also mounted Wurfrahmen, with four frames at two per side.