1. Sackman, J. L., On the Use of Stress Functions for Heterogeneous Maxwell Bodies, Contract Nonr 266(34), Tech. Rep. No. 6, Columbia University, September, 1958. F a r downstream the pressure is once more p0; hence, the velocity is constant and equal to UQ. I t is concluded t h a t the jet, while being two-dimensional in the neighborhood of t h e rim, will, far downstream, change its cross section to be inversely proportional to the distance from t h e vehicle, while maintaining a constant velocity.
2. Chaplin, H. R., Theory of the Annular Nozzle in Proximity to the Ground, Aerodynamics Laboratory. David Taylor Model Basin, Navy Department, Aero Report 923,July, 1957.