Merry Christmas and a Happy New Year to everyone following the Perlan Project.
December has been a pretty slow month for us but work is continuing. The main development was a decision on the battery system. It turns out the main battery is going to be one really big batery. Even with the latest (and safest) lithium battery technology, it’s the heaviest component inside the plane other than the pilots. A small tank of fuel and a generator would weigh less but we don’t want to have to engineer a way of providing oxygen for such an engine.