Using high altitude props at 5,000ft will give you the same performance characteristics of regular (sea level) props at, say, 200ft.
They create more resistance but that means a reduction in motor speed. For each 1,000ft above sea level I think (remembering from a hungover lecture about 8 years ago) you lose around 2-3% in performance/thrust for a given RPM and prop. So you're operating at around 85-90% compared to if you flew at sea level.
That being the case you should see a slight increase in flight times though I imagine it will be very small.
Definitely worth getting a set.
Sent from my LG-H815 using
InspirePilots mobile app