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Why A=2 and B=1 in the call signs for Spirit and Opportunity?
Why were the Voyager spacecraft numbered “out-of-order”?Why does Curiosity use an RTG rather than solar (as Spirit and Opportunity do) for power?What software language was used to program the martian rovers Spirit, Opportunity and Curiosity?Can either Opportunity or Curiosity explore the state of Spirit?Which images were used primarily for navigation algorithms on the Spirit rover?Camera costings for Opportunity/Spirit/Curiosity roversWhat was the last message to Opportunity today (13 Feb '19)?How did NASA's Deep Space Network encode and broadcast music to Opportunity?Why do most space probes survive for far longer than they were designed for?What was the last message Opportunity sent?Opportunity's last tau was 10.8; what does that mean and how is tau defined and measured?
$begingroup$
The Martian rover Spirit held the call signs MER-A and MER-2. Opportunity was called MER-B and MER-1. The assignment A=2 seems backwards; logic would suggest A=1. Why is this so?
Based on comments in a previous question, answered by @MarkAdler. Here it is as a proper question.
opportunity spirit mars-exploration-rover
asked 3 hours ago
Dr SheldonDr Sheldon
6,89322464
$endgroup$
add a comment |
$begingroup$
The Martian rover Spirit held the call signs MER-A and MER-2. Opportunity was called MER-B and MER-1. The assignment A=2 seems backwards; logic would suggest A=1. Why is this so?
Based on comments in a previous question, answered by @MarkAdler. Here it is as a proper question.
opportunity spirit mars-exploration-rover
asked 3 hours ago
Dr SheldonDr Sheldon
6,89322464
$endgroup$
add a comment |
$begingroup$
The Martian rover Spirit held the call signs MER-A and MER-2. Opportunity was called MER-B and MER-1. The assignment A=2 seems backwards; logic would suggest A=1. Why is this so?
Based on comments in a previous question, answered by @MarkAdler. Here it is as a proper question.
opportunity spirit mars-exploration-rover
asked 3 hours ago
Dr SheldonDr Sheldon
6,89322464
$endgroup$
The Martian rover Spirit held the call signs MER-A and MER-2. Opportunity was called MER-B and MER-1. The assignment A=2 seems backwards; logic would suggest A=1. Why is this so?
Based on comments in a previous question, answered by @MarkAdler. Here it is as a proper question.
opportunity spirit mars-exploration-rover
opportunity spirit mars-exploration-rover
asked 3 hours ago
Dr SheldonDr Sheldon
6,89322464
asked 3 hours ago
Dr SheldonDr Sheldon
6,89322464
edited 3 hours ago
Dr Sheldon
asked 3 hours ago
Dr SheldonDr Sheldon
6,89322464
asked 3 hours ago
Dr SheldonDr Sheldon
6,89322464
asked 3 hours ago
Dr SheldonDr Sheldon
6,89322464
6,89322464
add a comment |
add a comment |
1 Answer
1
active
oldest
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$begingroup$
On MER we numbered the builds, but used letters for the launches. So MER-1 was built before MER-2. MER-A would both launch and arrive first, and MER-B would launch and arrive second. When we started, we weren't sure which hardware would launch first. Due to how the design testing split across the two flight units was arranged, it turned out that MER-2 became MER-A (Spirit), and MER-1 became MER-B (Opportunity).
answered 1 hour ago
Mark AdlerMark Adler
51k3131215
$endgroup$
add a comment |
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1 Answer
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1 Answer
1
active
oldest
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$begingroup$
On MER we numbered the builds, but used letters for the launches. So MER-1 was built before MER-2. MER-A would both launch and arrive first, and MER-B would launch and arrive second. When we started, we weren't sure which hardware would launch first. Due to how the design testing split across the two flight units was arranged, it turned out that MER-2 became MER-A (Spirit), and MER-1 became MER-B (Opportunity).
answered 1 hour ago
Mark AdlerMark Adler
51k3131215
$endgroup$
add a comment |
$begingroup$
On MER we numbered the builds, but used letters for the launches. So MER-1 was built before MER-2. MER-A would both launch and arrive first, and MER-B would launch and arrive second. When we started, we weren't sure which hardware would launch first. Due to how the design testing split across the two flight units was arranged, it turned out that MER-2 became MER-A (Spirit), and MER-1 became MER-B (Opportunity).
answered 1 hour ago
Mark AdlerMark Adler
51k3131215
$endgroup$
add a comment |
$begingroup$
On MER we numbered the builds, but used letters for the launches. So MER-1 was built before MER-2. MER-A would both launch and arrive first, and MER-B would launch and arrive second. When we started, we weren't sure which hardware would launch first. Due to how the design testing split across the two flight units was arranged, it turned out that MER-2 became MER-A (Spirit), and MER-1 became MER-B (Opportunity).
answered 1 hour ago
Mark AdlerMark Adler
51k3131215
$endgroup$
On MER we numbered the builds, but used letters for the launches. So MER-1 was built before MER-2. MER-A would both launch and arrive first, and MER-B would launch and arrive second. When we started, we weren't sure which hardware would launch first. Due to how the design testing split across the two flight units was arranged, it turned out that MER-2 became MER-A (Spirit), and MER-1 became MER-B (Opportunity).
answered 1 hour ago
Mark AdlerMark Adler
51k3131215
answered 1 hour ago
Mark AdlerMark Adler
51k3131215
answered 1 hour ago
Mark AdlerMark Adler
51k3131215
answered 1 hour ago
Mark AdlerMark Adler
51k3131215
51k3131215
add a comment |
add a comment |
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