UIUC propeller database

ThrustLab's propeller model is checked against measured wind tunnel data from the UIUC Propeller Data Site, and the validation report sets out how. The table below lists propellers by diameter and then pitch, with simulated results for each propeller paired with a motor and battery pack.

Propellers

PropellerSizeBladesBest pairingThrust at 100%Power at 100%Best ηg/W at best η
APC 8x68×6 in23805/32/2942.31 lb237 W79.1% at 100%4.42
APC 8x6E8×6 in2Scorpion HK-3014-900kV2.60 lb261 W80.8% at 90%4.73
APC 8x6SF8×6 in2T-Motor AT2820-8803.12 lb315 W80.8% at 90%4.69
APC 9x69×6 in2Cobra C-3510/16 1200Kv3.20 lb310 W80.9% at 60%6.61
APC 9x6-49×6 in4Scorpion SII-3014-1040kV3.46 lb332 W80.3% at 60%6.71
APC 9x6E9×6 in2Cobra C-3510/16 1200Kv3.22 lb312 W80.9% at 60%6.61
APC 9x6N9×6 in23805/34/2762.08 lb190 W83.2% at 100%4.97
APC 9x6SF9×6 in2MAD 4006 IPE 740kV4.55 lb487 W80.2% at 70%5.4
APC 10x510×5 in2AXI 2826/13 GOLD LINE V3 710kV6.39 lb695 W80.6% at 80%4.71
APC 10x5E10×5 in2Cobra C-2826/12 760Kv4.73 lb455 W81.6% at 70%5.96
APC 11x5.5E11×5.5 in2MAD X2815 EEE 900kV5.02 lb470 W80% at 70%6.03
APC 11x5.5MR11×5.5 in23808/12/4894.25 lb364 W80.5% at 60%7.82
APC 11x5.5R-RH11×5.5 in2MAD X2815 EEE 900kV5.02 lb471 W80% at 70%6.03
APC 12x612×6 in24606/9.5/6274.35 lb338 W82.5% at 60%8.51
APC 12x6E12×6 in23810/24/1983.71 lb273 W80% at 90%6.51
APC 12x6EP(F2B)12×6 in23810/24/1983.71 lb273 W80% at 90%6.51
APC 12x6SF12×6 in24613/14/1965.73 lb466 W82% at 100%5.57
APC 13x6.5E13×6.5 in2Tempest 3520-550Kv5.94 lb502 W82.2% at 70%6.78
APC 13x6.5E(F2B)13×6.5 in2Tempest 3520-550Kv5.94 lb502 W82.2% at 70%6.78
APC 14x714×7 in2Scorpion HK-3536-510kV Motor7.65 lb628 W85% at 70%6.84
APC 14x7E14×7 in23814/20/1644.33 lb296 W80.7% at 90%7.01
APC 16x816×8 in24619/13/1457.20 lb513 W82.1% at 90%6.69
APC 16x8E16×8 in2Scorpion HKIII-5025-44010.78 lb917 W88% at 60%7.22
APC 18x818×8 in24613/9/30612.77 lb1242 W82.6% at 40%9.97
APC 18x8E18×8 in26514/6.5/2929.82 lb713 W86.3% at 70%7.74
APC 18x8W18×8 in2MAD X7224 IPE 170kV13.26 lb1093 W83.5% at 100%5.5
Fast modelComputed 2026-10-03prom-rs/0.6.2Validation

The curves here are the Fast model, which every account and every visitor runs without limit. An account also runs the Full model, which solves this propeller from its measured blade geometry.

Engineering aid — ThrustLab results are physics-based estimates, not certified data. Always bench-test and independently validate before committing a real build to flight. Not for safety-critical or certification use.