Canopy jettisons and egress trials were something done in the past at A&AEE Boscombe Down, but only in a 1 g environment. Aircraft (or just sections of them) were placed in front of the blower tunnel and 4 RR Merlins provided an airflow upto 500+ Knots. Canopies could be jettisoned, ejector seats fired and even crew abandonments carried out (catch nets provided).
To my knowledge the last unassisted abandonments conducted were on the Shackleton AEW (could the crew clear the radome when using the under nose escape hatch?) that means the Tutor as well as the Viking and Vigilant gliders haven't been tested even after fatal mid-air betwen two Vikings at RAF Sealand where the failure to jettison the canopy properly was identified by the investigation.
Could canopy jettisons and crew abondonments be conducted? Yes, the Blower tunnel is still at Boscombe Down. Will trials be conducted? No, they cost too much
