Speaking of 1960s technology…
The MiG-25 Foxbat dazzled NATO when it was first spied in 1964. Theoretically capable of Mach 3 and reaching altitudes as high as 115,000 ft., the giant interceptor sent a chill through the West, especially when it was feared it was a strike aircraft.
Then, in September 1976, when Soviet Red Air Force Lt. Viktor Belenko famously defected with his late-model Foxbat-P and U.S. analysts got a first-hand look at the beast, they saw it was terribly flawed. Constructed of stainless steel due to its size and weight, its engines were fragile and could be easily damaged, especially at high speeds. The electronics left a lot to be desired. Lacking a look-down-shoot-down radar, it was limited in combat.
To fix some of the MiG-25’s shortcomings, the Soviets developed what was termed the “Super Foxbat” in the late 1970s. The airframe was crafted from a blend of composite nickel steel, various alloys, and titanium. Featuring a longer fuselage to accommodate a more advanced PESA-style radar able to track 24 airborne targets even among ground clutter and an RIO to take advantage of it, the MiG-31 Foxhound was born.
Although out of production since 1994, the Russians have about 100 updated MiG-31BM models, complete with glass cockpits, HOTAS controls, the late gen Zaslon (Flash Dance) phased array radar, and other good stuff. Still, the 26-ton monster looks like a Cold War pterodactyl.
Check out this recently released video of the aircraft operating around Perm, notably the very region where Gary Powers was lost in 1960.