DZ Patterns - Skydiving Landing Pattern Calculator

Android app that calculates and visualizes right-hand landing patterns on a satellite map based on canopy performance and wind conditions.

Setup

Google Maps API Key

1. Go to Google Cloud Console
2. Create a project (or use an existing one)
3. Enable Maps SDK for Android
4. Create an API key under Credentials
5. Create a local.properties file in the project root:

MAPS_API_KEY=YOUR_API_KEY_HERE

Build

Open in Android Studio, sync Gradle, and run on a device or emulator with Google Play Services.

Features

• Satellite map view of the DZ
• Configurable canopy profiles (airspeed in knots, glide ratio)
• Manual or automatic wind input (via Open-Meteo API, no key needed)
• Tap to set landing target, drag to set approach heading
• Calculates right-hand pattern: entry (1000ft), base turn (600ft), final turn (300ft)
• Real-time pattern overlay on the map