heat barrier
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
But the heat barrier is like fighting your way into a thicket of thorns.
From Time Magazine Archive
Rocket planes like the Skyrocket do not encounter the "heat barrier"; they do not fly long enough to heat up seriously.
From Time Magazine Archive
Others said later that space vehicles would never get through the heat barrier.
From The Practical Values of Space Exploration Report of the Committee on Science and Astronautics, U.S. House of Representatives, Eighty-Sixth Congress, Second Session by United States. Congress. House. Committee on Science and Astronautics.
