Aviation expert Henk Hesselink thinks that airports should have circular runways instead of straight ones. Among other things, large circular runways could reduce the need for crosswind landings, use airport land more efficiently, and increase the number of planes simultaneously landing and taking off.
As part of these efforts, NLR has been involved in a European project called ‘The Endless Runway’. This radical new airport concept is based on the construction of a circular runway with a diameter of approx. 3.5 km around an airport terminal. Such an airport would take up only a third of the space of a conventional airport. Another advantage is that aircraft would always be able to take off and land independently of the wind direction, since there is always a point without crosswind on the circular runway. Landing aircraft can also be routed away from residential areas because they are not dependent on a standard approach path. Finally, the ‘Endless Runway’ concept will enable multiple aircraft to take off and land simultaneously, resulting in increased airport capacity.
According to Hesselink’s research, a circular runway as long as three normal runways (and the diameter of one runway) could handle the traffic of four normal runways. (thx, dad)