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May 15, 2021 Archives

Saturday, May 15, 2021

CONTINUITY: Rocket Lab’s 20th Launch Spins Out of Control after Stage Separation

Posted at 22:22 Permalink

THE HAPPENING WORLD: Introduction to Logisim Evolution: Open-Source Logic Simulator

Wow! I sure wish I'd had something like this when I was designing the M9900 CPU and M9900 64K!

You can download Logisim Evolution from GitHub. It's free, written in Java, and ready-to-run installable versions are available for Debian (etc.) and Red Hat (etc.) Linux, Mac OS X, and Windows systems.

Posted at 11:00 Permalink

TRACKING WITH CLOSEUPS: Tesla Model S Onboard Systems Battery Runs Down While on Charger

…and the the fun begins.

Posted at 10:34 Permalink

CONTINUITY: Chinese Tianwen-1 (天问) Lands on Mars

In vintage communist style, no streaming video or other contemporary coverage was provided of the landing, only this Stalinesque announcement after the (claimed) success, with the co-ordinates. Independent radio hobbyists have been tracking the telemetry signal from the lander and inferring mission events from its Doppler shift as it performed its final maneuvers and encountered Mars.

Posted at 10:11 Permalink

THE HAPPENING WORLD: Rocket Lab Electron “Running Out Of Toes” Launch

Launch is scheduled for 10:08 UTC on 2021-05-15. Rocket Lab will attempt to recover the first stage from the sea after a parachute splashdown.

Update: Loss of telemetry, end of Webcast without any further information. It doesn't look good. (2021-05-15 11:24 UTC)

Posted at 08:07 Permalink