Other titles:COLLECTION OF RADAR FILMS FROM TELECOMMUNICATIONS RESEARCH ESTABLISHMENT, MALVERN [Allocated Series Title]
Summary: Research and information film about CRT (cathode ray tube) radar displays (type DF9).
Description: Titles have been assembled in the wrong order. They read:
- 'A record on a map'
- 'The system responds to the flying controls of a friendly aircraft'
- 'and an enemy aircraft'
- 'Split field servo motors are used for remote control'
- 'Enemy dives'
- 'Friend climbs'
- 'Enemy turns right'
- 'Friend turns left'
- 'Friend increases speed'
- 'Variable magnification increases the size of an image on the screen'
- 'This film is secret'
- 'Split field servos'
- 'Motor generator type 73'
- 'Consists of a split field servo motor with a built in generator'
- 'The two field yolks'
- ' . . . are separated by an insulating brass ring'
- ' On taking the motor to pieces . . '
- ' . . . we note that the field pole pieces are shaped to prevent "cogging'''
- ' . . . and to decrease generator ripple'
- 'On the armature the motor section contains 13 poles'
- 'The generator section is skew slotted to reduce friction'
- 'The generator brush-holder is rocked to obtain minimum pick-up'
- 'The motor brush-holder is rocked to off set permanent magnetism
- 'Brush pressure is kept to a minimum'
- 'and is adjusted by a brass screw'
- 'A Bakelite cap is used as a locking nut'
- 'Overall friction is about 30gm. x cm'
- 'On the tag board are . . .'
- 'Motor field'
- 'Motor armature'
- 'Generator field'
- 'Generator armature'
- ' In RDF trainer type 19 it is required to co-ordinate during a synthetic Air to Air interception, a projected picture . . .'
Alternative Title:COLLECTION OF RADAR FILMS FROM TELECOMMUNICATIONS RESEARCH ESTABLISHMENT, MALVERN [Allocated Series Title]
