Exact(1)
The propeller twist enhances the stacking of the bases on one strand and therefore increases the stability of the helix meaning that regions with high propeller twist angles (large negative) would correspond to rigid areas, whereas flexible regions would have low propeller twist angles.
Similar(59)
A low-humming "schlap-schap" sound from the small propeller fills the gallery.
You will get the blue propeller cap!
Put on the Blue Propeller Cap.
Calculations are presented for a reference case of a four-bladed low-speed propeller in forward flight.
For many communities, any allure an airport might have is often outweighed by what are perceived as sizable drawbacks, like the drone of low-flying propeller aircraft and possible safety and environmental hazards.
Thrust is provided by four Rolls-Royce Mermaid azimuth thruster type podded propulsion units, each featuring one forward-facing low-vibration propeller with separately bolted blades.
THE small propeller-driven plane piloted by Peter Szapary, an Austrian count turned Kenyan flower farmer, banked and flew low over the Rift Valley town of Naivasha.
Facebook expected some minor damage due to the design of the Aquila, which has skids and low-slung propellers: "There isn't a landing gear — there really isn't even a runway, just kind of a landing patch there in the desert," Maguire said.
After the bombers completed their run, he strafed an airfield seven miles west of Koblenz, but he came in too low, causing his propeller to hit the ground, which made the engine vibrate.
At the low-head end, propeller turbines are usually more efficient unless the power output is also small.
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