Why did they reverse the propellers' rotation?

Why did they reverse the propellers' rotation? - White Windmill

In Poseidon (2006), Robert Ramsey died while stopping the propellers.

But the propellers started in a reverse direction, which creates suction. (I don't know who reversed it.) Dylan stuck a cylinder into the propeller with which damages it.

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They finally get out of the ship. But Ramsey never was informed that he will reverse the propellers.

Why did they reverse the propellers' rotation?



Best Answer

Why did they reverse the propellers' rotation?

To get out since the power of the thrusters was blowing them back...

IMDB Synopsis

Nelson sees the door to the bow thrusters and opens it, only to get blown back by the hurricane-force winds the still-active propellor is generating. While Jen looks after him, Christian suggests throwing something in there to block the propellers and get them to stop, but Ramsey points out they'd need to either stop them manually or get them turning the other way.

As for who reversed it...it was Robert Ramsey

Ramsey dives in and swims off. The other three arrive and are told what Ramsey is doing as we see Ramsey get in the control room. He finds the engine stop button, but it's broken. He starts running out of air, and with his last breath manages to find the button to make the propellers turn the other way.




Pictures about "Why did they reverse the propellers' rotation?"

Why did they reverse the propellers' rotation? - Windmill Energy on Green Grass Field
Why did they reverse the propellers' rotation? - Close-up Photography of Gray Stainless Steel Fan Turned on Surrounded by Dark  Background
Why did they reverse the propellers' rotation? - White 3-blade Windmill Under Cloudy Sky



Why do the propellers spin in the opposite direction?

In a counter-rotating installation, the propellers on the right wing turn counter-clockwise while those on the left wing turn clockwise. The principle advantage of counter-rotation is to balance propeller torque effects thus eliminating any problems associated with a Critical Engine.

What is the purpose of a reverse pitch prop?

Use of reverse pitch decreases landing distance, improves aircraft stopping performance in the event of a rejected take off and, when permitted by the Aircraft Flight Manual (AFM) enables the aircraft, whilst on the ground, to be reversed under its own power.

What happens if you put a propeller on backwards?

Just as the airfoils do not produce useful lift if flown backwards, the propellers don't produce thrust if spun in opposite direction. That being said, it is possible to obtain reverse thrust from propellers by setting a negative pitch, similar to the airfoil being flown upside down.

Does it matter which way a propeller spins?

For single-engine airplanes, there are no performance benefits to a propeller turning one way or the other. So it seems there is no reason beyond the designer's personal preference and ease of maintenance for the direction of rotation.



REVERSE THRUST (Part 3) Propellers




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Images: Pixabay, Tom Swinnen, Alireza Kaviani, Expect Best