Calidus B-250
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The Calidus B-250 is a tandem-seat, turboprop, light attack aircraft with counter-insurgency capability. Its structure is constructed entirely of carbon fiber, thus making it much lighter than its com
Calidus B-250 at Dubai Air Show 2019
Pratt & Whitney Canada PT6
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The Pratt & Whitney Canada PT6 is a family of turboprop aircraft engines produced by Pratt & Whitney Canada. It was designed in 1958, first flew on 30 May 1961, entered service in 1964, and has been c
Calidus B-250
…cantilever monoplane with a retractable tricycle landing gear. It has an enclosed cockpit with two Martin-Baker ejection seats in tandem. It has a single Pratt & Whitney Canada PT-6A-68 turboprop in tractor configuration. It was designed and developed in Brazil by Novaer, with mass production to be undertaken by Calidus in the…
A PT6A-20 on display at the Canada Aviation and Space Museum
Epicyclic reduction gears on Pratt & Whitney Canada PT6 gas turbine engine
From left to right: propeller mount, reduction gear, exhaust, 2-stage free power turbine, 1-stage gas generator turbine surrounded by the combustor, 1 centrifugal then 4 axial compressor stages, intake, and accessories
A PT6A-67D engine on a Beechcraft 1900D. The turbine exhaust (copper-colored pipe) is prominent.