Part 1 in this series covered defrost cycle problems in heat pumps. Now, let's discuss the second major winter issue: heat pumps stuck in one mode. The customer calls and says the system won't switch ...

The Boeing Starliner, is set to undock from the ISS on June 22. This is a several day delay. During its current mission, the spacecraft has encountered a fifth helium leak and a stuck oxidizer valve.

Add Yahoo as a preferred source to see more of our stories on Google. A silver spacecraft sits in a large white-walled room. Astrobotic has homed in on a potential cause for the problems plaguing its ...

The current hypothesis is that a valve failed to reseal properly, leading to a ruptured oxidizer tank. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...