A complete powertrain and airframe for autonomy development. Ships with motors, a 4-in-1 ESC, propellers, telemetry and optical-flow sensing, sized for a 500 g class payload. Flight controller, companion computer, mission sensors and battery are chosen by the integrator.
Note
The kit ships with 10×4.5 propellers. Thrust, payload and endurance figures on this page were modelled on an 11×4.5 propeller. With the 10×4.5, expect roughly 10% less endurance and a lower thrust ceiling.
Warning
This kit is NOT NDAA Section 848 compliant and is not eligible for federal procurement. No country-of-origin or NDAA declarations are supplied. Intended for commercial, research, and educational use without sourcing restrictions.
#Capability summary
| Capability | Provision |
|---|---|
| GPS-denied flight | MicoAir MTF-01P: PMW3901 optical flow + laser ToF rangefinder, 100 Hz over UART, MAVLink. No GNSS dependency. Indoor and outdoor position hold; requires >60 lux. |
| Payload capacity | 1232 g above a 410 g reference compute and sensing payload, to a 4000 g MTOW. |
| Companion compute | Mounting provision for Jetson Orin / Raspberry Pi class boards. |
| Telemetry | MicoAir LR900-F, 500 mW LoRa, 915 MHz band. Air + ground pair included, with antennas and Pixhawk cables. Manufacturer-rated to 30 km line of sight. |
| Autopilot compatibility | Standard Pixhawk interfaces: Pixhawk 6C/6X, CUAV V5+, Cube Orange+. ArduPilot and PX4 both supported. |
| Safety | ESC interface supports RC or autopilot-level motor interlock, allowing an independent kill-switch channel alongside autonomous control. |
| Logging | Autopilot dataflash logging; no additional hardware required. |
| Supply chain | Commercial. No NDAA declarations. Not eligible for federal procurement. |
#What's in the kit
| Item | Qty | Vendor |
|---|---|---|
| HPR Q500 Frame Kit | 1 | Hardpoint Robotics |
| EMAX ECO II 3115 640 KV motor | 4 | EMAX |
| HGLRC 60 A 4-in-1 BLHeli_S ESC (2–6S) | 1 | HGLRC |
| MicoAir LR900-F 500 mW 915 MHz LoRa pair (air + ground), incl. antennas and JST-GH cables | 2 | MicoAir Technology |
| MicoAir MTF-01P (optical flow + laser ToF) | 1 | MicoAir Technology |
| Master Airscrew MR 10×4.5 propeller | 4 | Master Airscrew |
| Prop adaptor rings, 6→5 mm | 4 | Master Airscrew |
| Misc (hardware, wiring, standoffs, straps) | — | — |
#Powertrain
| Spec | Value |
|---|---|
| Motor | EMAX ECO II 3115, 640 KV |
| Motor weight (each) | 112 g incl. lead |
| Motor dimensions | 37.3 × 48.65 mm |
| Stator | 31 × 15 mm, 12N14P |
| Shaft | 5 mm, M5 prop thread |
| Mount pattern | 4 × M3, 19 × 19 mm |
| Lead | 18 AWG, 270 mm |
| Propeller | Master Airscrew MR Series 10 × 4.5 |
| Propeller weight (each) | 12.8 g |
| Prop material | GFRC, US-made |
| Prop hub | 6 mm bore, 8 mm hub; needs 6→5 mm adaptor rings (included) |
| Disk area (4) | 0.203 m² |
| ESC | HGLRC 60A 6S V1 4-in-1 BLHeli_S (60 A per motor, 2–6S, DShot 150/300/600, M3 mounting) |
| ESC weight | 40 g installed (single 4-in-1 board, leads and heatshrink) |
| Battery (not included) | 6S 5000 mAh LiPo |
| Hover current | 4.6 A per motor at reference weight |
| Hover throttle | ~30% |
| Thrust ceiling | ~2.4 kg/rotor → 9.6 kg total (11×4.5 basis) |
| MTOW | 4000 g (frame-limited) |
| Power path | XT90 to 4-in-1 ESC |
| Peak bus at 2:1 from MTOW | ~86 A (21.6 A per motor) |
#Weight budget
| Item | Weight |
|---|---|
| Frame (500 mm carbon) | 920 g |
| Powertrain and avionics (motors, ESCs, props, radio, flow sensor) | 583 g |
| Autopilot (Cube Orange+ class) | 75 g |
| Base airframe subtotal | 1578 g |
| Companion computer (Orin Nano class) | 175 g |
| Stereo depth camera (ZED 2i class) | 235 g |
| Mission payload | 410 g |
| 6S 5000 mAh LiPo | 780 g |
| AUW, reference payload | 2768 g |
#Performance
Modeled on an 11×4.5 propeller at figure of merit 0.60, electrical efficiency 0.78, 22.2 V nominal, 80% usable pack capacity. See the note at the top of this page.
#Base weight
Airframe and autopilot, no mission payload. Base airframe 1578 g: a complete flyable aircraft with autopilot, telemetry and optical-flow sensing. This is the configuration to tune and trim in first. Autopilot is integrator-supplied.
| Battery | Pack wt | Usable Wh | AUW | Bus | Margin | Endurance |
|---|---|---|---|---|---|---|
| 6S 5000 LiPo | 780 g | 89 | 2358 g | 14 A | 4.07:1 | 17.4 min |
| 6S 6000 LiPo | 880 g | 107 | 2458 g | 15 A | 3.91:1 | 19.7 min |
| 6S 8000 LiPo | 1150 g | 142 | 2728 g | 17 A | 3.52:1 | 22.3 min |
#Reference payload
Companion computer and depth camera (410 g). The 6S 5000 is the recommended default: lowest AUW, best thrust margin, and least downwash for work near the ground or over loose objects. Step up a pack size where mission duration matters more than agility.
| Battery | Pack wt | Usable Wh | AUW | Bus | Margin | Endurance |
|---|---|---|---|---|---|---|
| 6S 5000 LiPo | 780 g | 89 | 2768 g | 18 A | 3.47:1 | 13.7 min |
| 6S 6000 LiPo | 880 g | 107 | 2868 g | 19 A | 3.35:1 | 15.6 min |
| 6S 8000 LiPo | 1150 g | 142 | 3138 g | 21 A | 3.06:1 | 18.1 min |
#At MTOW (4000 g)
Payload headroom is measured above the reference payload configuration. MTOW does not vary with battery or propeller because it is set by the frame, not the powertrain. Margin at MTOW is 2.40:1. Flying near MTOW costs endurance sharply; step up a pack size when running heavy.
| Battery | Payload headroom | AUW at MTOW | Bus at MTOW | Endurance |
|---|---|---|---|---|
| 6S 5000 LiPo | 1232 g | 4000 g | 31 A | 7.9 min |
| 6S 6000 LiPo | 1132 g | 4000 g | 31 A | 9.5 min |
| 6S 8000 LiPo | 862 g | 4000 g | 31 A | 12.6 min |