Moon landing for Starship

Lo, on the 1/29/2021, JF Mezei did proclaim ...
On 2021-01-29 23:10, Snidely wrote:

The Raptor has 2200 kN thrust for the vacuum version, and is "only"
throttle-able to 40% of that.

But the steel cruise ship weights a lot so needs more fuel/thrust to
land and then take off, and more fuel = more weight. Add to that the
elevator, freight elevator and escalators needed from the top of the
Starship to moon ground :-)

On Earth (6x the lunar gravity), 1 Raptor is able to lift a substantial
portion of that mass. It doesn't get up to lunar escape velocity down
here, but I think you overestimate the stainless penalty in the lunar
environment.

/dps

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In article ,
says...
So if Blue Origina can ship the fuel to Gateway with just one launch
from Earth, vs Starship that needs (exagerated) 20 launches to fuel the
tanker Starship with enough fuel to get to mopon and back AND refuel the
moon Starship, then Blue Origin will have lower costs.

This is all crazy hand waving.

Jeff
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In article ,
says...
Since Blue Origin intends to have re-usable earth launcher, this
eliminates the current huge cost advvamtage Space X has over those with
disposable launchers. So at that point, the number of launches needed
starts to matter.

Only the first stage of New Glenn will be reusable. Each flight will
expend its upper stage(s). Also, they've not launched or landed New
Glenn's first stage yet, so when they're learning, every first stage
will be expended.

And finally, you're asserting that a partially reusable system will be
cheaper than a fully reusable system. That's a stretch.

Jeff
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These posts do not reflect the opinions of my family, friends,
employer, or any organization that I am a member of.