11.   So he patented a retractable hood that attaches to the frame of a backpack, and comes with solar panels, a cooling fan and mosquito netting.

12.   Technicians decided that a sensor that decides when to start a cooling fan had failed, and triggered a power interruption.

13.   The cooling fan of its computer is held by tiny rubber grommets that damp vibrations.

14.   The engine needed to run long enough to turn the cooling fans on, and there was no gas.

15.   The first was the little sensor in the radiator that tells the cooling fans to turn on.

16.   The devices caused fires that were drawn inside the tanks by their cooling fans.

17.   The only sound is the muted roar of cooling fans.

18.   The other past incident involved a cooling fan that shorted out while the plane was on the ground, creating smoke in the cockpit.

19.   Then there are the cooling fans, which might be window fans or ones that sit on the floor or table.

20.   Unplug it and check the mesh that covers the cooling fan in the back of your computer.