Wall pressure and thrust of a dual bell nozzle in a cold gas facility P. Reijasse, D. Coponet, J.-M. Luyssen, V. Bar, S. Palerm, J. Oswald, F. Amouroux, J.-C. Robinet and P. Kuszla Published online: 01 October 2012 DOI: 10.1051/eucass/201102655