Formulas for propellers in yaw and charts of the side-force derivative
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THEORIES - VORTEX↗
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Results for “PROPELLERS, THREE-BLADE VS SIX-BLADE”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Proposal for a propeller side-force factor
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PROPELLERS - HAMILTON STANDARD↗
Propeller selection from aerodynamic considerations
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PROPELLERS - NAVY↗
Wind-tunnel Tests of Eight-blade Single and Dual-rotating Propellers in the Tractor Position
Tests of 10-ft. diameter, eight-blade, single - and dual - rotating propellers were conducted in 20-ft propeller research tunnel. Propellers were mounted at front end of a streamline body in spinners that covered hubs and parts of shanks. Effect of a symmetrical wing mounted in slipstream was investigated. Blade-angle settings ranged from 20 Degrees to 65 Degrees. Results indicated that dual rotation resulted in gains of from 1 to 8 percent in efficiency over single rotation for eight-blade propellers, but presence of a wing reduced gain about one-half. Greater power absorption caused by dual rotation over flight range and higher efficiency or thrust for range of take-off and climb was indicated
PROPELLER-WING COMBINATIONS↗
Wind-tunnel Tests of Single- and Dual-rotating Tractor Propellers of Large Blade Width
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CHARTS - PROPELLERS↗
Wind-tunnel Tests of Single and Dual-rotating Tractor Propellers at Low Blade Angles and of Two-and Three-blade Tractor Propellers at Blade Angles up to 65 Degrees
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PROPELLER BLADES - SETTING, HIGH-BLADE ANGLE VS LO↗