This week in SF history

— February 14, 2000: NEAR-Shoemaker enters orbit of Eros (wikipedia.org)

— Anomaly analysis (PDF near.jhuapl.edu)

Spaceflight news

— MarCO satellites are now silent (spacenews.com) (jpl.nasa.gov)

Short & Sweet

— ISS suffers another leak, but this time of the messy, non-dangerous type (nasaspaceflight.com)

— NASA seeks a human-rated lunar lander. (spaceflightinsider.com)

— Updated Shape Model of 2014 MU69 surprises planetary scientists (arstechnica.com)

Questions, comments, corrections

— SFSF giveaway on Twitter this week! (sfsf.shop/support-tom)

— Jim Wagner: China space pronunciation guide (realcoffeemaker.com)

— TOM glassware (facebook.com) (twitter.com/NancyCareyPR)

— TOM on the radio! (ideafablabs.com/maker-radio)

Data Relay: Composite Materials

— Thank you to Ben Crews for researching and presenting this topic.

— Humans have been using composites for thousands of years! (mar-bal.com)

— Proof that wood is a composite (youtube.com)

— Spray-on insulation is a composite. (PDF: ulalaunch.com)

— Markings on parts like “>PP-GF15<” indicate a “glass filler,” thus making them a composite. (PDF: bombardier.com)

— Practical Engineering on Youtube is doing a great series on concrete. (youtube.com)

— Study on hybrid composites (journals.sagepub.com)

— Composites can form efficient monocoquestructures. (wikipedia.org)

— Real Engineering’s video on Carbon Fiber (youtube.com)

— Space Ship 2 is entirely Carbon Fiber (cnn.com) (popsci.com)

— The Space Shuttle Orbiter had some sandwich panels with aluminum honeycomb core and carbon-fiber facesheets. (nasa.gov) (nasa.gov)

— Composites reduced the thrust structure weight by 21% (PDF: (nasa.gov)

— 787 Dreamliner used 50% (by weight) compsits. (boeing.com)

— Orion CCM, Falcon 9 Payload fairing, Dragon heat shield are all composites (space.stackexchange.com)

— Thin and thick laminates must be analyzed differently (wikipedia.org).

— “Corrugated cardboard” composites (core.ac.uk)

— Machining sandwich board cores can result in complex structures, proposed for use in atmospheric reentry (PDF: pdfs.semanticscholar.org)

— Ceramic Matrix Composites were used in the Shuttle TPS (wikipedia.org) (PDF: nasa.gov)

— Carbon/carbon can provide lighter and much stronger alternatives to smaller metallic machinings. (fibermaterialsinc.com)

— CMCs are currently being researched to replace components in engine compartments and high-temp environments. (aerodefensetech.com)

— Metallic Matrix Composites (MMC) (wikipedia.org)

— This is so cool! You’re so cool! Where can I learn more?

— Robert M. Jones (1999) Mechanics of Composites

— Strong (2008) Fundamentals of Composites Manufacturing

— Kollar, Springer (2009) Mechanics of Composite Structures

— Stress analysis example (notebooks.azure.com)

— Composites Wiki Page (wikipedia.org)

— NASA 360 (youtube.com)