Physical capture vs. kinetic and RF effects
Kinetic rounds, jammers, and RF takeover each have a role, but each carries trade-offs that are unacceptable in many environments. Live fire over a stadium, an airport approach, or a prison yard is rarely an option. RF jamming may be restricted by spectrum authorities and is ineffective against autonomous or fiber-tethered UAS. RF takeover assumes a known command protocol and a maintained command link.
Net-based interdiction sidesteps these constraints. The threat is physically entangled, motors stall under load, and the airframe is brought down — recoverable for forensics. The intercept is non-explosive, spectrum-independent, and effective against autonomous drones that no longer respond to a command link.
How a net engagement works
A weighted net is propelled toward the target by compressed gas or a blank-fired cartridge. Corner weights pull the net open in flight and carry it through the rotor disk. Once a single propeller contacts the mesh, the net wraps around the arm, motors stall under load, and the airframe loses lift rapidly.
- →Net spread: must open fully before reaching the target. Spread is a function of weight distribution, propulsion energy, and time of flight.
- →Mesh size: tuned to the rotor diameter of the threat class. Fine mesh (5 cm) entangles micro-UAS rotors; medium mesh (10 cm) handles small tactical-class UAS; large mesh (20 cm) covers expanded engagement zones and larger targets.
- →Effective range: a function of net mass, weight pattern, and propulsion. The UltraNet operates in the 3–9 m optimum range with effective deployment to 15 m. Drone-mounted configurations engage at standoff dictated by the carrier platform.
- →Recoverability: a captured airframe is intact — SD cards, flight logs, and payload remain available for exploitation.
Operator-deployed vs. drone-mounted
The UltraNet is configurable for both operator-deployed and drone-mounted use. The right configuration depends on the threat profile, terrain, and rules of engagement. Mature programs frequently deploy both side by side.
The standard UltraNet configuration: a handheld, CO₂-powered net launcher for fixed-site and perimeter defense. Suited for airports, prisons, stadiums, critical infrastructure, embassy compounds, and crowd-area engagements where operators are already on station. Operator-portable, rapid reload, low logistical footprint, immediate availability to the perimeter team.
The UltraNet net launcher, custom-integrated as an interceptor payload onto an unmanned aerial platform. Brings the engagement window to the threat, eliminating fixed-site range constraints. Suited to mobile force protection, perimeter sweeps, and convoy overwatch where a ground operator cannot reach the intercept point in time. Mount, trigger linkage, and net configuration are engineered to the host airframe.
What to ask before selecting a configuration
- →Threat class: micro/mini commercial UAS (Group 1) or small tactical-class systems (Group 2)? Mesh size and net mass are tuned to the rotor disk of the dominant threat.
- →Engagement envelope: required minimum and maximum range, and acceptable miss distance. Drone-mounted configurations remove the fixed-range constraint.
- →Environment: indoor, urban canyon, open perimeter, or airfield. Each constrains propulsion choice and rules of engagement.
- →Recovery requirement: if forensics or chain-of-custody on the captured airframe matters, net capture is the only interdiction effect that delivers it intact.
- →Integration: for drone-mounted use, mount interface, trigger linkage (manual, electromechanical, or autopilot-commanded), and certification on the carrier UAS are engineered per platform.
- →Compliance: end-user verification and applicable U.S. export-control regulations for international programs.
Where net systems sit in a layered C-UAS architecture
Net interdiction is the physical-effect layer that activates after detection (radar, RF, EO/IR) and classification confirm a hostile track. It complements — not replaces — RF defeat. When RF takeover or jamming is unavailable, restricted, or ineffective (autonomous, fiber-tethered, swarming), the net layer is the only non-kinetic option that physically removes the airframe from the airspace.
In layered architectures, drone-mounted net interceptors extend the engagement bubble beyond the fixed perimeter, while operator-deployed systems hold the inner ring for last-line defense of crowds, runways, or sensitive sites.