Recent content by Carl Brandon

I had the same problem. One breaker failed (wouldn't stay on) and I replaced it (60A). The second one just failed: As you can see it burned up. My first thought was that the high resistance was at the clip-busbar interface (the clips are in the bottom of the photo), but when I removed the...

Here's what the SRB cross-section looks like:

The solid boosters on the Space Shuttle burn for 127 seconds, on the SLS 126 seconds. The SLS has one more segment, but the burn is from the center of each section outward, not along the length, which all burns at the same time. I built a CubeSat at Vermont Tech that was launched on the all...

I just saw this thread, and wanted to respond to the general info about heat pumps. I'm a college physics professor, have a Model S for two years, live in Vermont, have two Powerwalls, heat my house with a heat pump (with NO BACKUP), and heat the house fine at -40F. I use a Mitsubishi heat...