Objectives

Since the early days of aviation, barometric pressure measurements have been a simple and robust method for altimetry. However, it has some drawbacks including having no direct reference to terrain and vertical profile variabilities restricting capacity and flight efficiency. The project investigated the environmental potential of geometric altimetry enabled by satellite navigation, to increase safety, support greener climb and descent operations, while also optimising capacity. At the same time, the project investigated the potential of environmentally-driven route charging to incentivise airspace users to avoid volumes of airspace with a high climate impact and disincentivise flight planning through high demand sectors / flight altitudes.