Mechanistic. Predict energy from the equations of flight. Transparent, verifiable — but blind to what the equations don't model.
Once we know what Kyte X1 taught us, the next honest question is: can the aircraft, in real time, tell us how much useful flight it actually has left?
A percentage tells you what's in the pack. It doesn't tell you what the mission ahead will cost, or whether you'll make it home. Kyte X2 replaces the number with a real energy budget.
Mechanistic. Predict energy from the equations of flight. Transparent, verifiable — but blind to what the equations don't model.
Learned from flight logs. Captures the patterns physics misses. Accurate where flown before — unreliable outside the training envelope.
Physics gives the shape. A residual model fills the gap. Every prediction reports how much of it is trusted, and how much is guess.
Three parallel prediction approaches run at once — each with different assumptions, different failure modes. They converge into a single endurance estimate with an explicit confidence range.
Every predicted number carries an uncertainty. Every model version reports its historical error against real flights. Accuracy is claimed only after it is measured.
We will never imply accuracy until it has been experimentally validated.