User Guide

7: SPECIFICATIONS
7.27
MMS Mast Mounted Sight
PUBLICATION
Jane’s Electro-Optic Systems 1995-96
SECTION
Ground Attack – Integrated Systems –
Helicopter
TITLE
McDonnell Douglas MMS Mast Mounted
Sight
TYPE
Integrated systems – helicopter
DESCRIPTION
The MMS consists of three subsystems; the sensor head, the control panel and the
onboard electronics. The system is cooled with a self-contained glycol mixture system
and is linked by a Military Standard 1553B databus. High field, rare earth magnets
float the sensor package. This is mounted above the rotor head permitting the aircraft
to carry out target acquisition, recognition and laser designation while concealed.
Within the head is a Northrop Electronics Systems Division sensor package consisting
of a Loral Fairchild low-light level television camera, a thermal imager based upon the
120-element MCTNS modules and the Litton MMS-LRF/D 1.06 — laser rangefinder
and designator. The sighting system includes a video tracker which provides both
manual and automatic tracking of targets. There is also a digital scan converter which
enhances the thermal imaging sensor image and provides frame freeze and x2 mag-
nification zoom capability.
There is a control/display system consisting of a master controller linked to the key-
board, display system and handgrip. A fire control system with processor and remote
Hellfire missile electronics, as well as TOW firing capability, may be added.
The sensors enable the scout helicopters to seek and to designate targets at
extended ranges during the day or night, irrespective of battlefield haze or smoke.
SPECIFICATIONS
Weight 113.4kg
Sensor head
Diameter 64.77cm
Weight 72.57kg
Field of regard
Bearing +-190°
Elevation +-30°
Thermal imager Field of view 2.8°; 10°
Television Field of view 2°; 8°
Type low-light silicon vidicon