Spaceflight news

— SLS Green Test hotfire followup (americaspace.com) (spacenews.com) (spaceflightnow.com) (youtube.com)

Short & Sweet

— SpaceX buys offshore oil platforms to convert to spaceports. (chron.com) (nasaspaceflight.com)

— ThrustMe performs on orbit. (spacenews.com)

— Starliner up and running? (spacenews.com) (HT Andrew Z: spaceflightnow.com)

Interview--Dr. Panagiotis Tsiotras, IEEE Fellow and Professor and David and Andrew Lewis Chair, Guggenheim School of Aerospace Engineering, Georgia Institute of Technology.

— Chapter 8.2 of Ulrich Walter’s Astronautics is a good resource for learning about Lambert Transfers (books.google.com)

— Dr. Tsiotras wrote a paper called Optimal Two-Impulse Rendezvous Using Multiple-Revolution Lambert Solutions (PDF: researchgate.net)

This week in SF history

— 1 Feb, 1990: The first test of the Soviet SPK/21KS maneuvering unit (americaspace.com) (astronautix.com) (astronautix.com) (spacefacts.de) (books.google.com) (russianspaceweb.com)

— Next week (2/2 - 2/8) in 1977: A farewell salute