ENS 332 Lecture Notes - Lecture 23: Hyperventilation, Sea Level, Armstrong Limit
13 Dec 2016
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Document Summary
Live in the troposphere: sea level to 16 km of altitude (23,000 52,000 feet, where aircrafts fly (35,000 40,000 feet) Space : weather balloons, considered 100 km from the earth"s surface. Mig-25 altitude record in 1977: for a jet-propelled altitude, pilot flew at 35 km. Troposphere: subject to visible and infra-red light (sunburn, near uv rays. Thermosphere: tremendously hot (1000 1500-degree range, vacuum radiation. No convection: astronauts are exposed to x-rays and uv light. General aviation: air density (atmospheric pressure falls precipitously) Troposphere: colder as you go up in altitude. Stratosphere: range where the highest altitude jumps occur. Cools down to ~ -100 at 90 100 km (edge of space) General aviation: atmospheric pressure falls precipitously in the tropopause. At sea level, atmosphere = 760 mmhg. As you ascend, the atmospheric pressure drops. Example: 10 km altitude, 200 mmhg of pressure. Tingling in fingers or toes: loss of motor control, blurred or tunnel vision, euphoria, dizziness.
