On 7/24/2019 8:07 PM, Scott Kozel wrote:
Anyone want to predict whether this will actually happen in 2024?
It would be interesting for sure.


I'd say improbable... Forgetting minor nits such as the lack of a lander
and lunar EVA suits...

It'll be interesting to see if they actually have a working upper stage
for Block 1 SLS, let alone reliable.

If the Delta III experience of DCSS is any indication of a forerunner
for ICPS...

"The DCSS first flew on 3 Delta IIIs, and failed 2 of 2 times. The
booster failed on the third flight, causing the loss of the DCSS before
ignitions." ..and..

"The Interim Cryogenic Propulsion Stage (ICPS), a modified 5–meter DCSS,
will fly as the upper stage of NASA's Block 1 Space Launch System.[3]
Artemis 1, the first flight, is scheduled for late 2020."

From:
https://en.wikipedia.org/wiki/Delta_...c_Second_Stage

A 2nd stage failure would certainly be basis for program delays.

Dave