Propfan engine having two oppositely rotating fan rotors

Details Propfan engine having two oppositely rotating fan rotors Propfan engine having two oppositely rotating fan rotors

1990-12-06

1992-08-11

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Plural impellers having relative movement or independent...

Coaxial rotation

416170R, B63H 510

Patent

active

051374250

ABSTRACT:
A propfan engine having two oppositely rotating fan rotors both driven by a low-pressure turbine by way of a drive shaft includes a reversing transmission. The reversing transmission drives one fan rotor, while the other fan rotor is coupled directly to the drive shaft. This construction permits a favorable design of the rotational speeds of the fan rotors and of the turbine and, in comparison to a conventional transmission, requires less space and weight for both fan rotors.

REFERENCES:
patent: 4237751 (1980-12-01), Davis
patent: 4728261 (1988-03-01), Wright et al.
patent: 4738589 (1988-04-01), Wright
patent: 4772181 (1988-09-01), Poucher
patent: 4936746 (1990-06-01), Mayo et al.
patent: 5010729 (1991-04-01), Adamson et al.
patent: 5028207 (1991-07-01), Rohra et al.
patent: 5030149 (1991-07-01), Fujita

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