InSight Surface Operations, 26 Nov 2018- 21 Dec 2022 |
InSight Surface Operations, 26 Nov 2018- 21 Dec 2022 |
Nov 26 2018, 08:20 PM
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#1
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Congratulations to the InSight team on a successful landing! We'll discuss the remainder of the mission here.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Dec 1 2018, 08:15 PM
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#2
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
The dust on the ICC lens makes me wonder how dusty the Phoenix MARDI would have been had we ever managed to get a post-landing image out of it. Unfortunately there was a sequence glitch in the one attempt that was made, and PHX died before we could try again.
-------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Dec 1 2018, 08:25 PM
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#3
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
Moment of well-meaning pedantry here: Weight and mass have been mentioned several times and there's that factor of 2.64 difference between Earth and Mars, as well as the distinction between weight (in, eg, Newtons) and mass (kg). For any given object, its mass, weight on Earth, and weight on Mars are three different numbers. I'm not sure that anyone has made any mistakes in the posts above, but there's a lot of potential confusion here.
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Dec 1 2018, 09:36 PM
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#4
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Forum Contributor Group: Members Posts: 1374 Joined: 8-February 04 From: North East Florida, USA. Member No.: 11 |
Moment of well-meaning pedantry here: Weight and mass have been mentioned several times and there's that factor of 2.64 difference between Earth and Mars, as well as the distinction between weight (in, eg, Newtons) and mass (kg). For any given object, its mass, weight on Earth, and weight on Mars are three different numbers. I'm not sure that anyone has made any mistakes in the posts above, but there's a lot of potential confusion here. As it is, the Insight lander is heavier than Phoenix, using the same landing jets, maybe Propguy can inform us how much more margin is in the lander for future heavier missions ? |
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Dec 1 2018, 10:20 PM
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#5
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
As it is, the Insight lander is heavier than Phoenix, using the same landing jets... 10 kg more landed mass from what I can tell (360 kg for InSight). From what I know of the design I don't think there's a lot more mass margin. All 12 engines at full thrust produces about 3600 newtons which is about 2.6x more than needed to hover (if I did that right), but they don't run all 12 engines at full thrust and there's the rocket equation to think of. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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