"Did you watch it?"
Did I watch it?
I've been asked about a dozen times since Phoenix landed if I watched the landing.
Coverage was available, after all, on NASA-TV (both satellite and web feeds), and the Science Channel ran Mars footage all night, including covering the NASA TV feed. I've worked on a lot of Mars Stuff, and indeed Phoenix runs VxWorks 5.2 for Rad6000, a direct product of a handful of folks at Loral & JPL, and us 3 chickens at WRS (Brian, Lisa and I; I was the most-junior member of the engineering team).
But... Monaco, Indy, and Nascar all had big races going, and all the normal stuff of the Memorial Day Weekend - so many things to do. Did I watch it?
In answer... reprinted with the author's permission (I wrote it after all) a blow-by-blow account from a personal web log of an engineer who's worked on a lot of Mars stuff:
------ reprinted with permission from the original author, see copymark info.
[Editorial comment - this blog was updated every few minutes, each [EDIT] mark is between 1 and 5 minutes apart.]
MARS: EDL data flow starts in about 2 minutes.
[edit]
Mars Ody data stream: verified.
[edit]
Cruise stage separation...
[edit]
verified. UHF signal acquired. Separation complete, craft on course.
[edit]
T-3:30 atmospheric entry
[edit]
MRO link-up soon. t-10:00 touchdown
[edit]
MRO data link: confirmed
[edit]
8K data rate... confirmed.
Entering atmosphere.... in 30.. 29...
[edit]
4..3...2...
[edit]
Seven Minutes Of Terror: begin now.
[edit]
For the next few minutes, we will lose COMS as the craft generates a plasma shock wave by it's heat shield burning it's way through the atmosphere. Once we slow enough and cool down, COMS will be re-established.
Ody: drop in signal, but present.
Phoenix: at peak heating
[edit]
Phoenix: we're ready to re-establish direct COMS with Phoenix. We never lost dopler monitor from Ody.
4..3..2..1... 32K switch detected, ODY has carrier, Parachute deployed.
[edit]
DATA LOCK-UP.... [Control room goes wild] Ground Velo: 90M/S
[edit]
.... aproaching.
tick... tick....
60M/S ....
tick... tick...
Altitude Convergence... RADAR RELIABLE @ 2000M
control room goes wild
Gravity turn detected.
... approach... slowing... not much though....
slowing
TOUCHDOWN - LANDED...
WE'RE THERE! CONGRATULATIONS to MPL's successful landing
on Mars.
EDL COM: standing by...
[EDIT]
NORMAL TERMINATION OF EDL COMS, PHOENIX HAS LANDED, we're officially ON MARS!!!!!!!!
Folks, it's time for some champagne!
----------------------
[original work protected by creative-commons copyright. no reprinting w/o original author's permission]


As an Engineering Specialist, it is Mike Deliman's responsibility to enable customers to achieve success in their endeavors, assist sales groups in evangelizing Wind River's technologies, and bring feedback of customer needs and experiences back into Marketing and Engineering. Mike has over 15 years of experience with VxWorks. 



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