The RAF Museum at Cosford and the IWM at Duxford both have normal hangars with natural light through large side windows. The American Air Museum at Duxford has the a large glass wall facing the Sun!
The airframes suffer more when left outside to face the British climate.
Light affects textiles and paintings and the conservation organisations like the National Trust control the amount of light that furnishings receive by curtains. I don’t think that it would be possible to ‘put curtains’ on the 7 hangars at Duxford. 🙂
Note: Flash lights are allowed at Duxford and the RAF Museums but tripods need a permit. Presumably to limit numbers.
mmitch.

The Hendon museum seems to lost its way in some places. When the new Milestones hall was built, I went into the museum via the original entrance. I then ended up getting into ‘milestones’ the wrong way. I see that the way to the correct entrance has now been painted on the path!
Putting helicopters, jets, trainers and WW2 types in sections together is a good idea. It also enables short guided tours too be made. But the Battle of Britain hall needs a complete redesign. Maybe removing all the sets at the beginning and putting a short video presentation on. This would allow unrestricted access to the aircraft, which is what the RAF Museum is about.
mmitch.