insider.si.edu

Pratt & Whitney R-4360-35 Wasp Major, 4-Row, Radial 28 Engine

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Power rating: 2,088 kW (2,800 hp) at ...
Napa Valley Register

A piece of aircraft history -- Mike Nieman's Pratt & Whitney aircraft engine -- sits in St. Helena

To Mike Nieman, the smell of his large Pratt & Whitney “Wasp Major” radial aircraft engine running is “the smell of victory.” “That smell is of a working engine that made this country free,” said the ...
Napa Valley Register

'It was thrilling': Historic military aircraft engine roars to life in St. Helena

A relic of military history roared to life on Tuesday morning in downtown St. Helena of all places. Mike Nieman fired up his Pratt & Whitney R-4360 “Wasp Major” radial engine, which was built to power ...
Flightglobal

Pratt & Whitney at 100: Power generations – engines that shaped aviation

In 1925, the Wasp was a leap forward in aircraft power, reliability, and performance – one that rocketed the trajectory of aviation technology into the post-war era. Its nine-cylinder, air-cooled ...
Seeking Alpha

RTX's Pratt & Whitney celebrates a century of flight

Pioneer of radial engine design continues to build on its legacy of aircraft propulsion innovation EAST HARTFORD, Conn., July 22, 2025 /PRNewswire/ -- Pratt & Whitney, an RTX (RTX) (NYSE: RTX) ...
Flightglobal

Pratt & Whitney at 100: Making history – a century of innovation

It began with one man’s vision that the best airplane can only be designed around the best engine. That philosophy of Pratt & Whitney founder Frederick B Rentschler still applies today as the business ...
insider.si.edu

Pratt & Whitney Wasp Major R-4360-B6, 4-rows, Radial 28 Engine

Bore and Stroke: 146 mm (5.8 in.) x 152 mm (6 in.) The Wasp Major was Pratt & Whitney Aircraft's last and largest piston engine. Its cylinders were in four rows, arranged in a spiral for better ...