[X] My Assistant

[vikingmars]

With a little image processing, one can easily see the final descent trajectory of the Phoenix Lander with its plumes disturbing the top layer of the Martian surface. After the release of the lander from the backshell, the effect is barely seen first, but is becoming more obvious, until the final strong pulses before landing. Any better estimates ? Enjoy !

[djellison]

A few close-ups of the accel during deployments etc.

Chute deploy, leg deploy, lander seperation, and touchdown.

Attached thumbnail(s)

 

[dmuller]

Chute deploy, leg deploy, lander seperation, and touchdown.

I notice one last peak of deceleration 0.35 seconds after landing ... did Phoenix bounce (a tiny little bit) on "impact"? To me the spike at L+0.35s does not seem to be part of a declining oscillations from the spacecraft vibrations

[climber]

I notice one last peak of deceleration 0.35 seconds after landing ... did Phoenix bounce (a tiny little bit) on "impact"? To me the spike at L+0.35s does not seem to be part of a declining oscillations from the spacecraft vibrations

Not sure to understand what it has been said after this post but, does it means that the "0.35 seconds after landing peak" could be the heatshield impact?

[djellison]

Yeah - the heatshield would have been quite a lot earlier, and I doubt it would have been felt by the lander.

Maybe something to do with the prop system - not the He vent, but blow down of whatever was left in the engines perhaps.

I don't think it's a bounce - as that would have registered as the free-fall accel for a moment, which would be at a negative g number, as seen in-between the engine throttle pattern