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Politics : View from the Center and Left -- Ignore unavailable to you. Want to Upgrade?

To: J_F_Shepard who wrote (480070)	9/24/2021 10:12:12 PM
From: cosmicforce	Respond to of 543012

You remember correctly about the Soviet technology. We got one through defection en.wikipedia.org The majority of the on-board avionics were based on vacuum-tube technology, more specifically nuvistors, not solid-state electronics. Although they represented aging technology, vacuum tubes were more tolerant of temperature extremes, thereby removing the need for environmental controls in the avionics bays. With the use of vacuum tubes, the MiG-25P's original Smerch-A (Tornado, NATO reporting name "Foxfire") radar had enormous power – about 600 kilowatts. As with most Soviet aircraft, the MiG-25 was designed to be as robust as possible. The use of vacuum tubes also made the aircraft's systems resistant to an electromagnetic pulse, for example, after a nuclear blast. They were also presumably used to provide radiation hardening for the avionics. [37] [38]