How the Vita Rescue System works
The Vita Rescue System utilizes four high- speed ducted fans that spin at 39,500 rpm to produce a total of 70 pounds of thrust, Riedlin explained. Operators can simply turn on the auto stabilization mode, or choose direct control and manually rotate the litter right or left to avoid objects such as trees or walls.
“The composition of the VRS is similar to that of a high-powered drone,” Sikora explained before listing the components: “MEMS sensors sense the hoist motion and environmental data; a high powered, smart,
cold-swappable battery system
powers a ruggedized electric propulsion system, producing thrust to stabilize the load; and the embedded computer(s), the ‘brain’ of the VRS which essentially operate similar to an aircraft flight computer, communicates with the VRS control pendant.”
The shell and structural elements of the system are produced with a proprietary thermoformed composite and polymer material that has an incredible strength-to- weight ratio, Sikora added.
The U.S. military obviously wants to use the system in challenging conditions, so it features protection from weather, water and dust, Riedlin said. And its two stable lithium-ion batteries can be swapped in flight for spares.
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