Dossier 05 · Persistent Surveillance & Perimeter Security
Sentinel Vesper
Acoustic-stealth reconnaissance with toroidal whisper propellers.
Initialising inspection bay
Overview
Vesper uses patented toroidal whisper propellers to stay below 35 dB at 50 m, enabling discreet observation of sensitive sites, wildlife and events without acoustic disturbance.
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<35 dB at 50 m
Quieter than a library at typical observation distance.
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Toroidal propellers
Patented closed-loop blades reduce tip vortex noise.
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90-minute endurance
Extended on-station time for continuous observation.
Technical specification
| Range | 15 km |
|---|---|
| Payload | 1.5 kg |
| MTOW | 5 kg |
| Endurance | 90 min |
| Speed | 20–25 m/s |
| Acoustic signature | <35 dB @ 50 m |
Institutional Portal
Submit an RFP. Subject to end-user certification and export licensing.