Dr Janet Folkes died today after a long battle with cancer.
Janet was an engineering lecturer at the University of Nottingham
Her successful career included work with lasers and a high-powered waterjet.
I first met met Janet through this scientific work, but spent far more time with her making films about hot air balloons.
Flying was Janet's great passion - especially in balloons - and she still holds numerous world records in them.
I was lucky enough to share just a few fragments of these adventures (usually from the ground)... and spent many hours hearing tales about the other ones.
Some films about Janet's adventures can be found below.
Janet was a brilliant woman - generous, genuine and brilliantly understated.
My wife and I joined her in Switzerland for a remarkable ballooning festival and the maiden flight of the University of Nottingham hot air balloon.
The trip remains one of our fondest memories.
Janet also "donated" numerous flights for charity, including one with my brother-in-law which we followed as ground crew.
It was another great day made possible by Janet.
I imagine there are hundreds of other people whose "brilliant days" had Janet working the burner!
It's sad that she's gone, but we've been left with many great memories. It's just a bit hard to smile about them today.