1 / 56

Newton’s thought experiment: orbital velocity

Newton’s thought experiment: orbital velocity. Surface escape velocities Planet V escape , ft/sec. Rocket Equation delta V = g I sp ln (M o /M f ) where: delta V = rocket velocity change (m/s) g = gravitational constant (9.81 m/s 2 )

margaretcurtis
Télécharger la présentation

Newton’s thought experiment: orbital velocity

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Newton’s thought experiment: orbital velocity

  2. Surface escape velocities Planet Vescape, ft/sec

  3. Rocket Equation delta V = g Isp ln (Mo/Mf) where: delta V = rocket velocity change (m/s) g = gravitational constant (9.81 m/s2) Isp = rocket specific impulse (s) Mo = initial rocket mass (kg) Mf = final rocket mass (kg) • Equation is for ideal conditions, with no strong gravity fields, as with near a planet. Corrections can be made by accounting for gravity “losses.”

  4. Rocket Equation, Mission Analysis and Performance

  5. ORBITING SATELLITES Vehicle range Burnout velocity (thousands of ft/sec)

  6. STS launch

  7. Earth Orbit Definitions • Apogee: the farthest point from the Earth. • Perigee: the closest point to the Earth. Because of the Earth's atmosphere, this cannot be less than about 80 miles above the surface. • For circular orbits, the apogee and perigee are the same. • Period: the time it takes to go around the Earth once. (The apogee and perigee determine the period.) • Inclination: the angle the orbital plane makes with the Earth's equatorial plane.

More Related