Apollo 12

This document contains the documentation and source code for "Apollo 12," a FOCAL-12 program designed to simulate a moon landing. The program mimics the descent of a lunar capsule, requiring the operator to manage fuel consumption to ensure a safe landing.

Key details include:

• Simulation Mechanics: The program calculates landing trajectory in real-time, displaying elapsed time, fuel levels, altitude, fuel consumption rate, and velocity.

• Versions:

  • Version 1 uses an analog-to-digital converter potentiometer to adjust fuel burn rates.
  • Version 2 uses computer sense switches to adjust fuel rates to protect hardware from mechanical wear.

• End Conditions: The simulation concludes when the capsule hits the surface or runs out of fuel. The program then evaluates the "goodness" of the landing based on the final impact velocity, ranging from "PERFECT!!" to "CATASTROPHE!"

• Requirements: Version 2 specifically requires the "$ SNS" overlay for FOCAL-12 to function.