thermal barrier

noun

Definition of thermal barrier

: a limit to unlimited increase in airplane or rocket speeds imposed by aerodynamic heating that without adequate provisions for cooling the exposed surfaces will result in loss of strength and eventual melting of the metal skin

called also heat barrier

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Cite this Entry

“Thermal barrier.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thermal%20barrier. Accessed 13 Aug. 2020.

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