Recommendation for adding Battery Range Circles to Mission Planner

1. Range Circles
a. Planning a mission and program autopilot
i. When selecting way points
1. Use battery configuration parameters to identify estimated battery distance that the aircraft can fly and return home.
2. As additional waypoints are added, mission planner recalculates the battery distance for each way point to last way point and provides the operator indications as to whether aircraft can fly all waypoints and safely return home.

b. When Aircraft is Powered On
i. Displayed on Map surrounding Aircraft
ii. Green Range Circle – From max battery distance down to 5% battery life
emaining (recommended minimum but operator selectable to any desired level).
iii. Red Range Circle (Flashing) – from 5% to lowest voltage set in parameters.

No files, tests, or entry points are identified. Start by reviewing the Mission Planner map and mission-planning areas against the requested waypoint range calculations, battery-based green and red circles, operator-selectable thresholds, and safe-return indications; done means these requirements are defined and verifiable.

Written by the indexing model from the issue text.