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What Re-born '01 Lander Platform?
dot.dk
post Jan 20 2005, 12:55 AM
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Is Phonix not the reborn '99 Polar Lander?

Just curios unsure.gif


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djellison
post Jan 20 2005, 11:55 AM
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Yeah - it shares most of the same systems - it's the same design really. Same engines, same systems, same structure, same cruise hardware etc. Because of that - when the '99 lander failure was not understood - the '01 lander was cancelled as a matter of caution.

The only majorly different things are the solar arrays and the instrumentation. Also - it's got an MER style HGA instead of the wok-design that MPL had - and this platform also had - and changed instrumentation.

The orig. plan was for the robot arm to 'pick up' the Sojourner 'spare' ( Marie Curie ) from the lander deck and put it on the ground beside the lander to rover around. That's since been dropped from the package.

Whilst some would say the platform is 'flight proven' w.r.t. Polar Lander - to be honest, the only thing that's proven is that it fails. However - the likely root cause has been found, and fixed ( a simple software bug ) - and they will be obliged to integrate some form of EDL tone telemetry a la MER to help troubleshoot if there is another failure.

The camera system is a hybrid evolution of the MPF/MPL camera ( 14.4 degree f.o.v. with approx 256 pixels across) and the MER CCD's ( 1024 across ) - so, if the two work well together, it should actually be better imagery - just - than MER biggrin.gif

Doug
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