The parameters used in this calculator for the Freefly Alta X are not official Freefly specs; they are measured by us from our aircraft.
Weights
- Base weight of Alta X: 10.35kg
- With pilot pro receiver installed
- Without rubber battery straps
- Without any payload mount
- Without dampener
- Without landing gear
- Payload Mount Options:
- Short Quick Release: 78g
- Vibration Dampener: 700g
- Landing Gear Options:
- Freefly Skyview Landing Gear: 500g
- Freefly Cargo Landing Gear: 1520g
- Freefly Skid Gear Short Legs: 748g
- Freefly Skid Gear Long Legs: 794g
- XM2 Labs SLG-20 Retracts: 2010g
Power Draw
Power draw was measured in the range of gross weight 24-36kg on a original motor aircraft.
In this range, power draw is relatively linear with P = 154.7x - 1096.2, this formula gives P the power draw in watts given gross weight x in kg.
Emergency Landing Time Calculation
This calculation should be taken with a grain of salt:
- Time before RTL activates: 5 seconds
- Assumed horizontal distance to home point: 30m
- Assumed horizontal speed: 20m/s (accel is neglected)
- Vertical speed until RTL_DESCEND_ALT: 4m/s
- Vertical speed after RTL_DESCEND_ALT: 0.7m/s
- RTL_DESCEND_ALT: 10m
- Note that the default settings have 45 seconds hover at RTL_DESCEND_ALT, this is not included