Cosmologists collaborate to sharpen measurements of the Hubble constant

Drawing together leading experts from across the field, an international collaboration of cosmologists has created a unified ...

The Holy Grail for Light Speed Travel Is Unlimited ‘Vacuum Energy’—And Scientists Desperately Want to Harness It

Casimir cavities are mysterious spaces between microscopic metal plates in a vacuum. Areas of diminished energy between the ...
insider.si.edu

Rotol Spitfire Propeller Blade, Constant-Speed, Wood and Metal

The famous British Supermarine Spitfire used various propellers during its early service. Rotol Airscrews, Ltd was formed in 1937 as a joint venture of Rolls-Royce and Bristol. The name, a combination ...
insider.si.edu

Dowty-Rotol R130 Propeller

Click to open image viewer. Rotol introduced the R130 propeller for the Vickers Viscount airliner in 1954. The R130’s electrically-actuated hub mechanism and square-tipped aluminum alloy blades were a ...
AviationPros

Hartzell Unveils Composite Kestrel Propeller for Rotax 916-Powered CubCrafters’ Carbon Cub UL

Hartzell Propeller is launching the Kestrel, a lightweight carbon fiber constant speed prop and the first in its new Falcon composite propeller series, specifically designed for aircraft powered by ...
WDAF-TV

Hartzell Unveils Composite Kestrel Propeller for Rotax 916-Powered CubCrafters’ Carbon Cub UL

PIQUA, OH, UNITED STATES, February 25, 2025 /EINPresswire.com/ -- Hartzell Propeller is launching the Kestrel, a lightweight carbon fiber constant speed prop and the ...
Globalair

CubCrafters, Hartzell Propeller unveil new prop for Carbon Cub UL

CubCrafters and Hartzell Propeller shared Tuesday news of the development of a new, lightweight constant-speed propeller, engineered specifically for the Rotax 916-powered Carbon Cub UL. The ...