Mahu menonton First Flights with Neil Armstrong? IPTV Setup membawa First Flights with Neil Armstrong (1991) ke setiap skrin anda dalam 4K Ultra HD. Inilah semua yang anda perlukan untuk menontonnya.
NASA Apollo astronaut Neil Armstrong adds to his long list of space flight & aviation accomplishments as he takes the controls of a variety of flying machines. Each episode blends historic footage, interviews, and flying. Armstrong takes you on an exhilarating adventure through time.
M3 · Episod 13 — Propellers - Wings With A Twist · 1993-12-08
The Wright brothers realized that a propeller was a rotating wing – giving it a twist made it practical. By the mid 1930s, variable pitch and NACA research revolutionized propeller design. With the coming of the jet age, propellers fell out of favor for large aircraft. But designers soon realized that a fast turboprop with an advanced propeller could be more efficient than the best jetliners.
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