The “02SS” armored aerosani was an experimental Soviet armored fighting vehicle developed in the early months of 1941.

What You Need to Know: The A-1 Skyraider, introduced during World War II, became the U.S.’s last propeller-driven attack aircraft. First flown in 1945, it served through the Korean and Vietnam Wars, ...

When you picture a propeller-driven aircraft, you probably imagine a single engine plane with the propeller spinning at the front. There's a good reason for that, as the front-facing design has proven ...