Wilbert Smith Archives Files Box 1130 16 1130-16-p061

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_ emperatures will be at iT salf of its radius. By the time it descends to an altitude ‘of 100,000 ft.. the speed is only 1700 miles/hr. and the fictional heating is negligible. A sphere with a radius of 5 ft., under -the same con- Gitions, loses about 7-8 in. The ablation stops at an stitude of roughly $0,000 fi. ee it is still travelling xt 2000 miles hr. The entry of cometoids into the atmosphere is more complicated. In I, the ice matrix will be inhomo- sencous, the ma with higher vapour...