Metropolregion Hamburg

LiKab – Perception of light and cabin climate

Cabins and Cabin SystemsEco-EfficiencyLeading-Edge Cluster Competition

The DLR Institute of Aerospace Medicine is investigating how the colour of light in the aircraft cabin influences a passenger’s perception of temperature. This can make it possible to reduce the load on air conditioning, thus saving resources.

The German Aerospace Centre’s Department of Aviation and Space Psychology is analysing the influence of light and climate within the aircraft cabin on the sense of comfort experienced by passengers. The potential use of coloured light as a mediator of temperature perception in the aircraft cabin is being investigated. The investigation relates to the psychological influence on temperature perception of coloured light produced by LED strips in the cabin.

Additional effects are expected on the energy consumption for cabin air conditioning. In a best case scenario, the procedure could involve deploying coloured light in such a way that passengers feel comfortable, with changes to the colour of the light being used to make the temperature in the cabin seem warmer or cooler as required. So far, yellow and blue shades have been tested in this energy-saving procedure.

Climate tests are conducted in collaboration with DLR’s Institute for Aerodynamics and Flow Technology in a complete aircraft on the ground – a Dornier 728. Test subjects answer questions about their perception of light and climate in the aircraft cabin, and with the help of the latest flow measurement technology the objective climate balance in the room is measured. Together, this provides a basis for optimisation of the air conditioning systems.


Dr Claudia Marggraf-Micheel, claudia.marggraf(at), +49 [0]40-51 30 96 21


German Aerospace Center (DLR)
Institute of Aerospace Medicine
Department of Aviation and Space Psychology

Project partner

iDS Industrial Design Studio

Sponsored by

Federal Ministry of Education and Research within the Leading-Edge Cluster strategy