Brock Technologies demonstrates SPEAR UAS

Unmanned aerial system features a composite longitudinal shaft to which the body, wing and tail sections all mount; modularity provides payload flexibility.

Brock Technologies Inc. (Vail, Ariz., USA) announced on March 19 that it has conducted flight demonstrations of the SPEAR UAS (unmanned aerial system), which features a lightweight, portable composite airframe. The SPEAR UAS was designed and manufactured to provide users with a lightweight, robust and portable airframe with the capability of carrying payloads of up to 14 lb/6.4 kg.

The SPEAR UAS is the first of Brock Technologies’ products to possess an independently shifting wing and fuselage. The system was designed to support various payload locations and weights, thereby omitting the need for ballast. This feature was demonstrated on multiple occasions as the SPEAR UAS wing was shifted to support each flights' varying payload weights. The standard SPEAR UAS weighs 8 lb/3.6 kg empty. This empty weight includes the weight of the autopilot and a custom pan/tilt/zoom gimbaled camera.

Customization and modularity are valuable components of the SPEAR UAS. The SPEAR’s variety of wing sizes, ranging from 10 to 14 ft (3 to 4.3m) in length are rapidly interchangeable in the toolless SPEAR system, catering to varying customer flight envelopes and payload requirements.

The recent SPEAR UAS flight demonstrations were conducted with 10- and 12-ft (3 and 3.7m) wings. Customization and modularity is provided by the SPEAR’s composite, longitudinal shaft which the body, wing, and tail sections all separately mount to. This modularity can be transposed with affordability. The SPEAR design reduces operational costs by allowing aged parts to be replaced and allows for affordability in future growth. For example, an entire aircraft does not need to be purchased to replace or upgrade a particular portion of the airframe.

In addition, the SPEAR performed flight tests with payloads ranging from 5 to 13 lb (2.3 to 5.9 kg). Both the forward and aft payload bays were used during flight demonstrations. Brock says the SPEAR UAS is rare in its ability to carry a payload greater than its own weight.

Observers of the flight demonstration witnessed various launching methods. The standard SPEAR UAS is capable of hand, as well as vehicle launches and is recovered via belly skid landing. Powered by an electric motor, the SPEAR UAS demonstrated endurances in excess of 1 hour with the gimbaled camera and the payload greater then 12 lb/5.4 kg. The craft has a MGTOW stall speed of 30 knots, and a max dash speed of 50 knots. Assembly of the craft requires no tools and provides users with the capability to go from the box to the sky in as little as 5 minutes.