Wiki
Astrodynamics
Notes, guides and references – 11 entries in 4 categories.
- Gravity Assists (Slingshot Manoeuvres) How spacecraft use a planet's gravity to speed up, slow down or change direction without using fuel, with the physics behind it and famous missions that relied on it.
- Lagrange Points The five points where a small object can stay in place relative to two large bodies, which ones are stable, and why telescopes like JWST are parked there.
- Orbital Mechanics: Key Equations The essential equations for orbits: gravity, Kepler's laws, orbital and escape velocity, the vis-viva equation, orbital period and Hohmann transfers, with worked examples.
- The Rocket Equation and Delta-v Tsiolkovsky's rocket equation explained: what delta-v and specific impulse mean, why rockets have stages, and how much delta-v it takes to reach orbit, the Moon and Mars.