The third day at Artefact it seems slightly less rainy, although the roof is still wet. Again everything packed rain-tight, we go up. The wind is coming from the North, which is good - as STUK's building is not blocking the wind then.
I try the delta kite first, but am not lucky in getting it up for long - even if it goes up in the air, when it reaches a certain height, it has trouble staying stable and crash-lands quite often.
After a while the wind is getting stronger, and I decide to switch kite and use the hata again. I take care to avoid the kite to lie flat on the roof, to avoid that it gets wet. With the stronger wind, the dry kite, it seems easy to get it up in the air. The hata is stable and I can even attach it to the anchor a couple of times, so I don't need to hold the kite all the time.
Switching out the pressure sensor is tricky while on the roof, so I plan for the next week to integrate the pressure sensor into both kites, so it will be just a matter of exchanging the tail and plugging in the pressure sensor.
The wind looses strength only a few times, where the kite starts floating down, and I can't save it and keep it up in the air - and I have to change the battery once for the sensors during the afternoon.
At 5pm the wind seems to get less again, and since it is time, and it is cold, I pack up again.
A week ahead to do kite repairs and improvements for the harsh conditions and review the sensor board packaging.