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How RMS Lusitania's propeller design created vibrations violent enough to make half the ship unusable

RMS Lusitania was a record-breaking ocean liner plagued by a surprisingly modern engineering problem: propeller-induced ...
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This is how two contra-rotating propellers can make ships more energy efficient

Subscribe to our newsletter for the latest sci-tech news updates. SINTEF has now designed and manufactured new measuring equipment for model testing of contra-rotating propellers. This could be good ...
The Economist

Propellers make a comeback on a new type of aircraft engine

WHEN A MODIFIED MD-80 airliner flew at the 1988 Farnborough air show in Britain, it was supposed to represent the future of air travel. One of its rear-mounted jet engines had been replaced with an ...
Nature

Experiments on Arial Propellers 1

AN article in the April Bulletin de la Sociiti d'Encouragement deals with some experiments on aerial propellers made by MM. Legrand and Gaudart, with the aid of a grant from the society. The greater ...
The New York Times

EFFICIENCY OF NAVAL SHIPS; While Experiments are to be Made to Test "In-turning" and "Out-turning" Screws, Solution Appears to be in Adoption of Triple Propellers.

The propellers were made rights" and 'lefts," so that their reversal of motion gave the same propulsive direction. Later on, for reasons of engine-room facility of supervision and conjoint working, ...
Science News

Giant Propellers Being Made from Wood and Plastics

We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen environmental ...