[1] The purpose of the colour is to reflect some of the thermal radiation from a nuclear explosion, protecting the aircraft and its occupants.
This was true for the specially fitted, single Soviet Tu-95V bomber that test-deployed the most powerful bomb of any kind – the 50+ MT-rating Tsar Bomba on 30 October 1961 – as it had the anti-flash white on all its undersurfaces and sides.
Paint used on the Avro Vulcan was manufactured by Cellon, and that on the Handley Page Victor by Titanine Ltd.[5] Many Strategic Air Command nuclear bombers carried anti-flash white without insignia on the underside of the fuselage with light silver-gray or natural metal (later light camouflage) on the upper surfaces.
[7] United States Navy E-6 Mercury remain painted in anti-flash white, as of October 2023.
In addition to these military aircraft, Concorde was painted white to reduce the additional heating effect on the aluminium skin caused by the sun whilst the aircraft was flying at high altitudes, the skin temperature already being raised to over 90 °C (194 °F) at Mach 2 by aerodynamic heating.