Comments
RMS-EZ delay block drilled -2s using AeroTech UDT (-4s side towards charge well, +2s spacer installed), so the charge should have fired around 12s post-burn-out, simulation suggested 11.6s optimal delay. 60fps hand-held camera video and 30fps on-board camera video both show ejection event occurred 4.37s after motor ignition. Nothing unusual about ignition (no chuffs, etc). AltimeterTwo says burn-out occurred at 0.92s (rocket was out of video frame during burn-out so no visual confirmation of burn-out time, back in frame 1.1s post-ignition and burn-out had already happened), making ejection event approximately 3.5s post-burn-out, 8.5s early. Tracking smoke continued from motor after ejection event, but video clearly shows puff of smoke at ejection (it was not a pressure-related separation, also this was the 12th flight of this rocket so there was proper ventilation for previous flights including two I500T DMS flights) and no later pop around when the delay charge should have gone off. Two additional ground cameras fixed on the pad (only show ignition and audio of rest of flight). Two on-board logging altimeters (Eggtimer TRS and AltimeterThree) also show pressure spike corresponding to ejection event (the altimeters in this rocket are not fully isolated from ejection charge [no avionics bay] so they always record an altitude spike at ejection which would not have been detected if it was a pressure-related separation). I can provide the videos / altimeter logs upon request (email contact preferred).
