Fan B (Bypass) from the NASA Quiet Engine Program
This fan map is found in the NASA contractor report CR-2519, figure 17. Use this map together with the Fan B (Core) map from figure 18.
About this fan
This fan was a full-scale, single-stage experimental fan developed in the early 1970s under NASA's Experimental Quiet Engine Program. The program aimed to integrate high-bypass-ratio engine technology and noise-reduction techniques to significantly lower noise emissions on subsonic civil transport aircraft.
Design Data
| Mass Flow [kg/s] | 354 |
| Bypass Pressure Ratio | 1.5 |
| Bypass Ratio | 5.5 |
| Tip Speed [m/s] | 354 |
| Tip Diameter [m] | 1.863 |
| Inlet Radius Ratio | 0.465 |
Figures of the measured data and the smooth map
Tables for use with performance programs
The map tables are available in four variants:
Note that the file extension must be changed to MAP after downloading if you want to use the map with GasTurb.
Additional figures from my experimental map smoothing program
