What philosophy defines the expendable SLS architecture versus commercial LEO vehicles?

Answer

Optimized for raw performance on a per-launch basis

The Space Launch System (SLS) embodies a philosophy of dedicated, expendable power, optimized specifically to achieve the maximum performance targets required for high-risk, complex deep space human exploration goals inherent to the Artemis program. Its design prioritizes raw power and payload capacity for single-use missions beyond Low Earth Orbit. This stands in contrast to the economic strategy underpinning many commercial vehicles, such as those competing for LEO access, which emphasize reusability of hardware to drive down the recurring cost of transportation services over time. While commercial partners focus on efficiency through hardware reuse, the SLS prioritizes mission certainty and brute force capability for non-routine, high-energy trajectories.

What philosophy defines the expendable SLS architecture versus commercial LEO vehicles?

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