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It's About the Journey Not Just the Destination
The Friedrichshafen FF.60 was a large four-engined triplane floatplane that flew shortly before the November 1918 armistice that ended World War One. As a result no further development was undertaken. It had been planned to carry a 1,000kg bomb load.
Two prototypes of the Friedrichshafen D.I were flown in 1917 for the Luftstreitkräfte – the air arm of the Imperial German Army in World War One. It was judged inferior to the Albatross III and no further production was undertaken.
Designed as a replacement for the Letov S-16Â two-seat biplane bomber, the Letov S-28 first flew in 1929. Powered by a Walter Castor 1 engine of 176 kW, it was found to be underpowered. After flight testing, it was modified to accommodate a Walter Jupiter VI of 330 kW. Letov found that the modification for the Jupiter engine were extensive and the new model number S-128 was applied to the new aircraft.
