Propeller syncro-pulsing

Details Propeller syncro-pulsing Propeller syncro-pulsing

1994-11-21

1996-12-31

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft power plants

1235591, 244 65, B64C 1100

Patent

active

055886191

ABSTRACT:
Indexing a propeller blade so it leads intake valve timing by a specific amount causes an increase in engine power. The proper indexing allows the high energy propeller wake in the form of an acoustic wave to be ingested by the induction system and arrive at the intake valve just as the valve is opening. When the Wave arrives just as the valve is opening, the wave causes a momentary increase in manifold pressure which adds pumping potential to force additional airflow into the engine cylinders which results in a power increase. This technique called propeller syncro-phasing causes the propeller blade to behave as a "zero stage supercharger". Adding a trailing edge extension to the propeller blade chord at the radius corresponding to the induction inlet causes a local increase in slipstream total energy adding additional energy to the induction airflow resulting in additional engine power. There has been no device marketed to exploit either of these two phenomena, nor has there been any publication which speaks of this technique that I have seen. In this regard propeller syncro-pulsing is unique.

REFERENCES:
patent: 1907454 (1933-05-01), Squires
patent: 1916956 (1933-07-01), Lake
patent: 1929886 (1933-10-01), Gosslau
patent: 1990979 (1935-02-01), Chiltor
patent: 2022900 (1935-12-01), Paulecke
patent: 2399828 (1946-05-01), Roche
patent: 2514487 (1950-07-01), Griese
patent: 2592214 (1952-04-01), Wallace

Affiliated with

Also associated with

Rating

Propeller syncro-pulsing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Propeller syncro-pulsing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propeller syncro-pulsing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1136527