2 a) A satellite re-entering Earth's atmosphere will suffer a radio communications blackout
because ui the plasma created by the shock wave in front of it. If the satellite's radio operates at a
frequency of 120 MHz, what is the minimum plasma density during the blackout? b) How does
the critical frequency of Earth's ionosphere change from noon to midnight? 3.a) What are the
orbital period and velocity of an astronaut in orbit at 300km altitude? What is the orbital period
of a satellite in geosynchronous orbit ( r=6.6rE )? b) What is the gravitational attraction of
someone on Earth due to the Sun? How does this compare with the gravitational attraction of the
Moon? 4. a) Atmospheric drag is proportional to density. How does the magnitude of
atmospheric drag change over a solar cycle at 100km altitude? b) Describe how space weather
impacts airlines..
2 a) A satellite re-entering Earths atmosphere will suffer a radio c.pdf
1. 2 a) A satellite re-entering Earth's atmosphere will suffer a radio communications blackout
because ui the plasma created by the shock wave in front of it. If the satellite's radio operates at a
frequency of 120 MHz, what is the minimum plasma density during the blackout? b) How does
the critical frequency of Earth's ionosphere change from noon to midnight? 3.a) What are the
orbital period and velocity of an astronaut in orbit at 300km altitude? What is the orbital period
of a satellite in geosynchronous orbit ( r=6.6rE )? b) What is the gravitational attraction of
someone on Earth due to the Sun? How does this compare with the gravitational attraction of the
Moon? 4. a) Atmospheric drag is proportional to density. How does the magnitude of
atmospheric drag change over a solar cycle at 100km altitude? b) Describe how space weather
impacts airlines.
