Product overview
The RadioLink LD-A40 is a 400mm brushless drone soccer aircraft intended for education, training and competition. Its enclosed protective body surrounds the propulsion system, while a hollow reinforced structure incorporates a 5 millimeters carbon plate design and ABS armor at five frontal stress points. Modified polypropylene forms part of the protective construction. The aircraft supports Altitude Hold, Stabilize, Turtle and Air modes, including a self-righting function when the ball overturns. Its listed event classes include FIDA Class 40 and FAI F9A-A.
The flight hardware combines an F722 controller running RadioLink BF firmware, a 70A four-in-one ESC, SZ-SPEED 2408-1850KV motors and GEMFAN 5-inch propellers. A custom-molded bay protects the Gensace 6S battery, and an R16SM receiver handles radio control. The integrated lighting includes a detachable 40-LED strip and tail light with programmable effects. For venue planning, the stated international drone soccer arena dimensions are 14×7×5 meters. The described integration centers on propulsion, battery protection, radio control and role-identification lighting.
The supplied package is a flight platform with a T12D transmitter, battery and HOTA T6 balance charger, accompanied by tools, a Type-C upgrade cable and spare hook and spring. Takeoff weight is 1153g; the stated six-minute flight time and 3000-meter control distance apply to flight data obtained in a good flight environment. Battery management provides a transmitter alarm below 22.0V and automatic landing at 21.5V. These thresholds make timely landing and battery replacement part of operation.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | RadioLink LD-A40 |
| Product type and size | 400mm brushless drone soccer aircraft |
| Intended use | Education, training and competition |
| Applicable competition classes | FIDA Class 40; FAI World Drone Soccer Championships F9A-A; Volume F9 Drone Sports F9A-A provisional class |
| Protective architecture | Fully enclosed protective frame with 360° shielding |
| Structural reinforcement | Hollow reinforced structure with a 5 millimeters ⊗-shaped carbon plate design |
| Frontal armor | Five major frontal stress points reinforced with 8x-strength ABS armor |
| Protective body material | Modified polypropylene with reinforced thickness |
| Operating modes | Altitude Hold, Stabilize, Turtle and Air modes; one-click switching |
| Self-righting function | Turtle Mode provides self-rightingWhen the drone ball flips over. |
| Radio communication technology | Proprietary pseudo-random frequency hopping and wireless communication algorithm |
| Flight controller | RadioLink F722 flight controller with BF firmware |
| Electronic speed controller | RadioLink 70A 4-in-1 ESC |
| Motors | SZ-SPEED 2408-1850KV brushless motors |
| Propellers | GEMFAN 5-inch 5055S-3 propellers |
| Flight battery | Gensace 6S 22.2V 2100mAh 150C battery |
| Battery protection bay | RadioLink custom-molded battery protection bay |
| Receiver | RadioLink R16SM 16-channel receiver |
| Lighting | Integrated, detachable 40-LED RGB strip plus tail light; red, green, blue, yellow, purple, cyan and white; custom programmable effects |
| Takeoff weight | 1153g |
| Flight time | 6 minutesFlight data tested in a good flight environment. |
| Control distance | 3000 metersFlight data tested in a good flight environment. |
| Charger | HOTA T6 DC/PD dual-channel smart chargerStandard configuration. |
| Charger output and efficiency | Maximum power 300W; charging current 15A; operating efficiency 94%HOTA T6 charger. |
| Charger battery cell range | 1–6SSupplied HOTA T6 balance charger. |
| Low-voltage warning | Transmitter beeping alarm prompts landing and battery replacementDrone battery voltage below 22.0V. |
| Automatic low-voltage landing | Automatic landing to prevent over-dischargeDrone battery voltage reaches 21.5V. |
| Venue space | 14×7×5 metersInternational drone soccer arena. |
| Aircraft, radio and charging equipment | One blue/red LD-A40 aircraft, one T12D transmitter, one Gensace 6S 2100mAh battery and one HOTA T6 1–6S balance chargerSupplied package. |
| Tools, spares and packaging | One screwdriver socket wrench; two 2.0mm hex wrenches; one Type-C upgrade cable; one spare hook and spring; one package boxSupplied package. |
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