Orbital Mission Planner

Goal

Plan a full orbital transfer: pick orbits, compute velocities and periods, cost the maneuvers, size the propellant.

Instrument chain

1. 01
   Orbital Period (Kepler's 3rd Law)

   orbit radius → period

   VERIFIED
2. 02
   Circular Orbital Velocity

   radius → v_circ

   VERIFIED
3. 03
   Vis-Viva Equation Solver

   r,a → speed anywhere on ellipse

   VERIFIED
4. 04
   Hohmann Transfer Orbit Calculator

   r1,r2 → Δv1,Δv2,transfer time

   VERIFIED
5. 05
   Orbital Inclination Plane-Change Δv

   v,Δi → Δv_plane

   VERIFIED
6. 06
   Orbital Eccentricity/Apsides Solver

   a,e ⇄ apoapsis/periapsis

   VERIFIED
7. 07
   Rocket Equation (Tsiolkovsky)

   total Δv,Isp → propellant mass

   VERIFIED
8. 08
   Escape Velocity

   departure check

   VERIFIED

Handoffs and cross-checks

radius → v/T → Hohmann Δv + plane Δv summed → Tsiolkovsky. Cross-check: vis-viva at r1 on transfer ellipse must equal v_circ(r1)+Δv1.

PointGuard stance

Drive the chain left-to-right; before propellant, re-derive Δv1 via vis-viva as an independent check — refuse to proceed if they disagree beyond 0.1%.

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• INSTRUMENT_COMBOS.json
• VERIFIED_LEDGER.json