How's that, just curious about the technical aspects of it all?
In fuel consumptions and outer appearance there isn't much difference between these designs, the autogyro is a very simple extremely short STOL design while the helicopter is a more complicated VTOL design.
Shortend runway length possible
Adding optional features for hovering
are very loud and fuel consuming, but simple and would work better with high, even supersonic, speed that would require a different, curved and not straight wing shape. Curved wing shape allows higher (supersonic) rotary wing speeds and thus higher transit speed of rotary wing aircraft from A to B than the current limit on helicopters due to subsonic rotor limits (= cheaper solution for the problem than the Osprey) because there's much less mechanical stress due to an engine pushing the wings, freeing them for enduring higher speed stress.
Current example of military use replacing a helicopter for naval surface surveillance at a fraction of the cost
The ability to hover at a spot is limited to the requirements of
troops and some hull down "periscope up" attack helicopter maneuvers (
) that requires a special configuration. If you can exclude these requirements for a number of machines or reduce their speed requirements and devise suitable maneuvers as well as give them simple devices for rare requirements, all the complicated technology for the main rotor is not required. There's some debate about pull or push configuration, I'm for thrust vectoring at the outlet of an energy efficient fan. If this craft is shot down, the crew will survive because the autogyro can be built sturdy, is no missile target because it lacks a nearby heat source and thus allows the aircraft to glide down without any countertorque (modern high-tech helicopters sometimes can switch to such an emergency configuration).
Autogyros are among the most likely rotary wing for the earliest outstanding complete radar stealth, a major problem with helicopters. For an autogyro aerodynamic drag is a feature because it is powered by the drag of the wings to provide lift. For a helicopter this drag on the rotating wings is energy substracted from their ability to provide lift. Stealth designs usually have more aerodynamic drag.
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The corollary here could be said that logistical sustainability can be much more significant than mere technological sophistication alone in combat.
Very good comments, it's the overengineering trap, plus the Murmansk convois plus very stupid decisions of the Nazi leadership (naval procurement again too expensive, too inefficient, but not as bad as for the Reich before them). If Someone like Churchill or Roosevelt was the "Führer" (he would have stuck with being chancellor or president in a democracy) it would have looked different. Dictatorships need wackos for internal stability and wackos in power diminish the effects of strength against external threats.