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The Sigma 6 features an all-electric powertrain, which is operationally emission-free. Hybrid propulsion options will be available using environmentally friendly fuels, or hydrogen fuel cells.
Noise is often overlooked when considering emissions, and we believe it is equally important. A key requirement for the Sigma 6 is to have a low noise signature. We designed our rotor system to operate with a 0.34 mach tip speed in a hover configuration to ensure the lowest possible noise signature.