Q: Is a propeller a type of fan that transmits power by converting rotational motion into thrust? ¶
Q: Is a propeller most common on ships such as tugs where there can be enormous differences in propeller loading when towing compared to running free? ¶
A: Yes, and a change which could cause conventional propellers to lock up as insufficient torque is generated.
Q: Is a propeller made up of sections of helicoidal surfaces which act together 'screwing' through the water? ¶
A: Yes, Three, four, or five blades are most common in marine propellers, although designs which are intended to operate at reduced noise will have more blades.
Q: Is a propeller removed? ¶
A: Yes, and the splined tube can be cut away with a grinder and a new spline bushing is then required.
Q: Is a propeller swept back against the direction of rotation? ¶
Q: Was a propeller the extension of that arc through more than 360° by attaching the blade to a rotating shaft? ¶
Q: Is a propeller put under a load that could damage the engine? ¶
Q: Is a propeller the controllable-pitch propeller? ¶
Q: Is a propeller used in sculling? ¶
Q: Is a propeller a "frozen-on" spline bushing? ¶
A: Yes, and which makes propeller removal impossible.
Q: Is a propeller the most common propulsor on ships? ¶
A: Yes, and imparting momentum to a fluid which causes a force to act on the ship.
Q: Are propellers pioneered by the Wright brothers? ¶
Q: Is a propeller a propeller that turns around the vertical axis? ¶
Q: Is a propeller added to a ship its performance is altered? ¶
A: Yes, there is the mechanical losses in the transmission of power; a general increase in total resistance; and the hull also impedes and renders non-uniform the flow through the propeller.
Q: Is a propeller operating and gravity? ¶
Q: Is a propeller overloaded? ¶
Q: Is a propeller essentially the same as a wing? ¶
A: Yes, and were able to use data from their earlier wind tunnel experiments on wings.
Q: Is a propeller exposed to the risk of collision with heavy objects, the propeller often includes a device that is designed to fail when overloaded? ¶
A: Yes, the device or the whole propeller is sacrificed so that the more expensive transmission and engine are not damaged.
Q: Is a propeller operating at a very high speed? ¶
Q: Is a propeller operating at high rotational speeds or under heavy load? ¶
A: Yes, The pressure on the upstream surface of the blade can drop below the vapor pressure of the water, resulting in the formation of a vapor pocket.
Q: Is a propeller modelled as an infinitely thin disc? ¶
A: Yes, and inducing a constant velocity along the axis of rotation.