Launcher Type M17A1 - M22A1; M51A1; M52A1; and M17A1B2 - M22A1B2Flash and Sound Signal M74
U.S. EXPLOSIVE ORDNANCE
PART 3 - PYROTECHNICS
Chapter 9 - GROUND PYROTECHNICS
Section 1 - SIGNALS

High-Bursting Range Signal M27A1B1

Length, inches

8.37

Diameter, inches

1.5

Weight, ounces

9.25

Height of trajectory, feet

700

This signal has the standard tube and fin assembly as the launcher types. It is used in training maneuvers to simulate the air burst of am artillery shell. It produces a flash and puff of smoke, and a noise audible for at least 2,000 yards.