I have set up a number of different weight and balance profiles for the aircraft I fly, but I have recently come across a new type which is defeating me because it is certified in normal and aerobatic cateogries. I would like to have two polygons defined, one for each category, and for SkyDemon to say under which category the intended flight is to be carried out. I know some aircraft are certified in three cateogries (normal, utility and aerobatic), and/or have max landing weights below max take-off weight. Could these also be supported?

What about just creating multiple aircraft definitions with the different operating envelopes? Wouldn't that do the trick?

Quite apart from the hassle of keeping separate aircraft definitions in sync if things change (e.g. aircraft re-weigh), it wouldn't quite work as the category can change during the flight due to fuel-burn. Indeed, where the max-landing weight is less than MTOW, it pretty much HAS to change! What I was hoping for is to enter the passenger and fuel loads and then be able to quickly check whether I'm within the aerobatic category (or at what point along the flight I will enter the aerobatic limits) and can safely do a loop or two en-route.