Skip to main content

Questions tagged [parabolic]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
9 votes
4 answers
2k views

“Parabolic”, suborbital and ballistic trajectories all follow elliptic paths. Is there a generic term for these trajectories?

There are three types of trajectories which produce microgravity but intersect with the surface of the earth: Reduced Gravity Flights in airplanes. These are sometimes called “parabolic” but are ...
Woody's user avatar
  • 24.9k
3 votes
0 answers
107 views

Have spherical dish antennae been used with Molniya satellites to avoid switch-over signal loss?

Molniya-orbit communication satellites work well for ground stations near the poles. These high eccentricity, highly inclined orbits, with a period of 12 hours, “loiter” for about 6 hours over the ...
Woody's user avatar
  • 24.9k