About ALR ALR Aerospace is an independent association of engineers, physicists and aeronautical specialists. The association was founded in 1981 and figures in the official Swiss Register of Commerce. The principle objective of ALR consists in the implementation of advanced technology projects and products as well as consulting in the aerospace and fluid mechanics related fields. Services are offered to public services and industries, mainly in form of contract research developments and consulting services. ALR specialists have been involved in projects such as Piranha Light Weight Fighter FFA2000 Eurotrainer SolarImpulse JANUS Advanced Training Aircraft Aircraft Performance Competence ALR’s Center of Competence in Aircraft Performance is the developer of the Aircraft Performance Program APP, a widely-used PC-software for aircraft performance analyses.