LN2 tank test

Today's tests with LN2 (liquid nitrogen) was almost 100% flawless.We notice during filling the front fuel tank didnt formed any frost, we immediately suspect somthing prevent the LN2 to come up in the tank and our suspicions fell on ice in the hose. Because one of the tanks was filled with LN2 and the other one was empty we didnt have any chanse to check what cause the problem .we needed to remove the hose that connects the fuel tanks at the bottom to solve it .We will soon repeat this test but until that we will replace those parts that caused today's problems.

"Electrical bug hunt"


Per and I *Sebastian* spent four hours trying to locate the fault on the relays that control the valve house, It turns out that is is creep power. We managed to remove most of the "creep power but not all..but nothing that interferes with other equipment.