As M = 1 is reached and passed, the normal shock reaches the trailing edge and becomes a weak oblique shock : the flow decelerates over the shock, but remains supersonic.
32.
With ? = 0? a normal shock is produced at the limit of the strong oblique shock and the Mach wave is produced at the limit of the weak shock wave.
33.
Overfuelling the combustor can cause the normal shock within a supersonic intake system to be pushed forward beyond the intake lip, resulting in a substantial drop in engine airflow and net thrust.
34.
A biconic intake is usually more efficient than the equivalent conical intake, because the entry Mach number to the normal shock is reduced by the presence of the second conical shock wave.
35.
A normal shock is created ahead of the object, and the only subsonic zone in the flow field is a small area around the object's leading edge . ( Fig . 1b)
36.
Since the Block 32 retained the Pratt and Whitney F-100 engine, the smaller ( normal shock inlet ) was retained for those aircraft . A total of 733 aircraft were produced and delivered to six countries.
37.
This can be attributed to the fact that using one or a combination of oblique shock waves results in more favourable post-shock conditions ( lower post-shock temperature, etc . ) when compared to utilizing a single normal shock.
38.
However, there was some internal compression terminated by a normal shock local to the ramp boundary layer bleed slot inside the intake . but Leyman states that the intake was aerodynamically self-compensating with no trace of any unstart problem.
39.
Most ramjets operate at supersonic flight speeds and use one or more conical ( or oblique ) shock waves, terminated by a strong normal shock, to slow down the airflow to a subsonic velocity at the exit of the intake.
40.
Loren Shriver, a shuttle program manager, said the puff appeared to result from the interaction of normal shock waves, caused by the shuttle moving through the air at supersonic speed, with a wave of condensed, moist air rolling down the vehicle.
