Search results
Results from the WOW.Com Content Network
A ducted propeller, also known as a Kort nozzle, is a marine propeller fitted with a non-rotating nozzle. It is used to improve the efficiency of the propeller and is especially used on heavily loaded propellers or propellers with limited diameter. It was developed first by Luigi Stipa (1931) and later by Ludwig Kort (1934). The Kort nozzle is ...
In aeronautics, a ducted fan is a thrust-generating mechanical fan or propeller mounted within a cylindrical duct or shroud. Other terms include ducted propeller or shrouded propeller . [ 1 ] When used in vertical takeoff and landing ( VTOL ) applications it is also known as a shrouded rotor .
A rim-driven thruster integrates an electric motor into a ducted propeller. The cylindrical duct acts as the stator, while the tips of the blades act as the rotor. They typically provide high torque and operate at low RPMs, producing less noise. The system does not require a shaft, reducing weight.
In a free turbine the turbine driving the compressor rotates independently of that which powers the propeller or helicopter rotor. Cooling air, bled from the compressor, may be used to cool the turbine blades, vanes and discs to allow higher turbine entry gas temperatures for the same turbine material temperatures.**
Oregon Ducks football star quarterback Dillon Gabriel made it clear which conditions he believes football games should be played in. During an interview with KOIN News on Tuesday ahead of his team ...
In 2006, following a viral internet debate started by Rick Cavallaro as a brain teaser, [2] a wind-powered, propeller-driven vehicle was built and filmed, demonstrating that it is possible to sail 'dead' downwind faster than the wind by the power of the available wind only.
A strategy is available to roll your 401(k) to a tax-free annuity and ensure you have a steady income stream during retirement. This idea would be advantageous if you have concerns about your ...
He offered me $20 million if I could get you to marry him,' " Anderson recalled on the podcast. "And he was laughing hysterically. Obviously, we don’t take Jon seriously.