Results of a low speed wind tunnel test program are presented which demonstrate the aerodynamic and acoustic performance of a scoop inlet. Engine noise that would normally propagate toward the ground is directed upward by the extended lower lip of the scoop inlet. In addition, more of the scoop airflow comes in from above the inlet than below, leading to relatively higher surface velocities on the upper lip and lower surface velocities on the lower lip. These lower velocities on the lower lip result in a higher attainable angle of attack before internal flow separation occurs.
Aeroacoustic performance of a scoop inlet
Aeroacoustics Conference ; 1977 ; Atlanta, GA
01.10.1977
Aufsatz (Konferenz)
Keine Angabe
Englisch
Aeroacoustic performance of a scoop inlet
AIAA | 1977
|Aeroacoustic performance of a scoop inlet
NTRS | 1977
|Aeroacoustic Performance of a Scoop Inlet
NTIS | 1977
|