Cumulus A.A.P.P. Help with cartridge starter

[Pengellybob]

I am looking for information about the Blackburn or Bristol Siddeley Cumulus apu that was going to be fitted to TSR2. In particular details of the cartridge start unit. What size cartridge? How was it fired, mechanical or electrical?


In the TSR2 specification it was called A.A.P.P. Auxiliary Airborne Power Plant I think.


If anyone has any knowledge of this I would be very interested.


Thanks