Description
The marker consists of a light metal body and tail, which are separated by a diaphragm The tail is closed by a metal plate, having a tail cap connected to the main outlet tube. The forward end of the body is closed by a heavy metal plate into which are set two water inlet valves. A tube passes from the central valve, through the filling and spring loaded pressure plate, and almost to the diaphragm. The pilot tube extends aft from the off center valve to the pressure plate. The pilot outlet tube then continues to a strainer attached to the diaphragm from which the main outlet tube issues. The pressure plate retains the main filling in the forward part of the body.
The flame is visible in daylight over a distance of at least three miles, and at night over a distance of about 20 miles. White smoke is given off with the flame. In damp atmosphere, after removal of the over-seals and press-caps, this marker evolves spontaneously inflammable phosphine, and for this reason should be prepared for use only just before it is to be launched.
Functioning
No information about functioning.
See Also
Nothing else to see.
Source(s)
OP 1665, British Explosive Ordnance (1946)
