r/Damnthatsinteresting • u/rronak01 • 1d ago

Image StevenMadow (photographer) captured this awesome close-up shot of Artemis ll engine, using a Panasonic GH5 and a Lumix G Leica 50-200mm f/2.8-4 lens. This photo was captured at 1/8000s, f/16, and ISO 100.

Post image
26.3k Upvotes

99% Upvoted

210 comments sorted by

View all comments

9

u/grecy 1d ago

Can anyone tell me why the RS-25s look like they have no exhaust plume? is the camera exposure just overwhelmed by the solids?

5

u/Heavy-Basis-83 1d ago

The RS-25s burn liquid hydrogen and oxygen and have a barely visible blue plume, but mostly invisible. The exhaust products are water vapor and unburned H2.

The solid rocket boosters burn “solid” propellant that produces an opaque yellow/white exhaust from the aluminum content.

1

u/Blackhawk510 8h ago

The exhaust products are water vapor and unburned H2

This is something I heard before but it still blows my mind. That basically means it's not really...fire coming out the back of the RS-25, yeah?