GRAPE

GRAPE is a desktop application for calculating the environmental impacts of aircraft operations at airports. The scope is limited to flight operations (excludes taxiing, ground handling, ...). Aircraft noise and pollutant emissions are the main focus of GRAPE.

Download

Windows x64

Getting Started

Start by downloading the latest release to your machine.
Unzip the downloaded file.
Start GRAPE.exe in the unzipped folder.
Check the examples folder for studies demonstrating some of the GRAPE features.

Features

Graphical user interface (GUI) to edit all the input data, run calculations and visualize outputs.
Models based implementation, as little hard coded variables as possible.
SQLite as an application file format (.grp). All user inputs can be automated by creating this file and inserting values into it. Further information can be found in the schema documentation.
GRAPE.exe can be called from a command line with arguments to automate certain actions. Check the documentation or run GRAPE.exe -h from the command line for further information.
Multithreaded calculations, the exact number of threads depending on the hardware used.
Supported models:
- Performance:
  - Model specified in the Doc29
  - User provided 4D trajectories
- Noise:
  - Model specified in the Doc29
- Fuel flow:
  - LTO Phase
  - LTO Phase with Doc9889 corrections
  - Senzig Fleming Iovinelle Fuel Flow Model
- Emissions:
  - Boeing Fuel Flow Method 2

Features not (yet) implemented

BADA4 performance model (you can use the 4D Trajectories if you have access to BADA4 from other sources)
Vector route dispersion
AzB noise model
Elevation of each grid point for a noise run based on a digital elevation model (DEM)
nvPM models (FOA3.0, FOX)
Noise contour generation from a noise grid (you can use the GeoPackage export feature, and then import that file into a GIS software with contour generation capabilities, e.g. QGIS)