High-Bursting Range Signal M27High-Bursting Range Signal M27A1B1
U.S. EXPLOSIVE ORDNANCE
PART 3 - PYROTECHNICS
Chapter 9 - GROUND PYROTECHNICS
Section 1 - SIGNALS

Launcher Type M17A1 - M22A1; M51A1; M52A1; and M17A1B2 - M22A1B2

Length, inches

10.5

Diameter, inches

1.6

Delay, seconds

6

Height of trajectory, feet

600

Description: The signal is assembled in a cylindrical case and equipped with a finned tail assembly for stabilization purposes. It is similar to the projector type, but modified to be fired from a service rifle or carbine. This type has a hollow stem, which is closed by a cork plug and a wheel-shaped fin. The "A1B2" series is the same as the "A1" series, ex-cept that the former indicates steel construction. Special cartridges are used to ignite the propelling charge. Embossed letters on the closing cap indicate color and type of star(s).

Operation: Remove the cork plug from the tail and place the signal on a rifle laun-cher. Place the butt of the rifle on the ground as far away as practicable. When the rifle is fired, the cartridge fires the primer, which in turn ignites the propelling charge. The signal travels approximately 100 feet and then reverses itself and reaches an altitude of approximately 600 feet.

 

Weight
(pounds)

Fin

Embossed
Letters

Star(s)

M17A1

1.04

White

WP

White - parachute-supported star

M18A1

1.10

White

WS

White - cluster of five stars

M19A1

1.02

Green

GP

Green - parachute-supported star

M20A1

1.10

Green

GS

Green - cluster of five stars

M21A1

1.00

Yellow

AP

Amber - parachute-supported star

M22A1

1.07

Yellow

AS

Amber - cluster of five stars

M51A1

1.02

Red

RP

Red - parachute-supported star

M52A1

1.02

red

RS

Red - cluster of five stars

Figure 199. Signal, Ground, White Star, Parachute, M17A1

High-Bursting Range Signal M27High-Bursting Range Signal M27A1B1