Cobham Goes To the X-Stream for Helo Connectivity | Aviation International News

Cobham Goes To the X-Stream for Helo Connectivity

Cobham's new SB-Helo X-Stream service promises fixed-wing level satcom connectivity for helicopters.

By Curt Epstein • Business Aviation Services Editor

January 30, 2020

SB-Helo X-Stream, a new service from Cobham with Inmarsat to improve helicopter satcom connectivity, is now live. Rotorcraft, especially the larger types, can often experience problems in airborne satellite connectivity due to a phenomenon called “rotor shadowing.” In most cases, the installation of the satellite antenna is below the rotor disc and its in-motion blades can cause interference with data transmission, leading to data packet loss.

While some degradation is acceptable, as the packet loss approaches 40 percent the connection becomes unusable. The wider the chord on the blade, and the more of them there are, the higher the degradation becomes.

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