RAT

[robinbird]

DAD MAKES REFERENCE IN HIS LOG BOOK TO 'RAT' WITH AN ILLUSTRATION ON HOW TO FEED IT. HE WAS A PHOTOGRAPHER OF TOP SECRET AIRCRAFT AND GLIDER TRIALS CONDUCTED BY THE AIRBORNE FORCES EXPERIMENTAL ESTABLISHMENT AT SHERBURN AND BEAULIEU TOWARDS THE LATTER PART OF WW2. THESE PAGES ARE STAMPED SECRET WITH REFERENCE TO A CENTRAL MOVEMENT RECORDER OR 'RAT'. I PRESUME THIS WAS SOME KIND OF BLACK BOX IN THE TUG AIRCRAFT TO RECORD FLIGHT DATA DURING GLIDER TRIALS?

 

[robinbird]

DAD MAKES REFERENCE IN HIS LOG BOOK TO 'RAT' WITH AN ILLUSTRATION ON HOW TO FEED IT. HE WAS A PHOTOGRAPHER OF TOP SECRET AIRCRAFT AND GLIDER TRIALS CONDUCTED BY THE AIRBORNE FORCES EXPERIMENTAL ESTABLISHMENT AT SHERBURN AND BEAULIEU TOWARDS THE LATTER PART OF WW2. THESE PAGES ARE STAMPED SECRET WITH REFERENCE TO A CENTRAL MOVEMENT RECORDER OR 'RAT'. I PRESUME THIS WAS SOME KIND OF BLACK BOX IN THE TUG AIRCRAFT TO RECORD FLIGHT DATA DURING GLIDER TRIALS?

Dad's log book includes an entry what looks like 'tensiometer' drops with reference to dropping trials. i.e. mk111 4,000lb tensiometer. No idea what that is about, any idea?