Peripheral Control Ejector
First Claim
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1. An airflow augmentation system for a ducted fan, wherein said ducted fan is comprised of a duct and a propeller, the airflow augmentation system comprising:
- an inner cowling member, wherein said inner cowling member is mechanically mounted to an inside surface of a trailing edge of said duct via a plurality of inner cowling stand-offs, wherein said inner cowling member is mounted within the downwash of said propeller, and wherein a trailing edge of said inner cowling member extends below said trailing edge of said duct; and
an outer cowling member, wherein said outer cowling member is mechanically mounted to an outside surface of said trailing edge of said duct via a plurality of outer cowling stand-offs, and wherein a trailing edge of said outer cowling member extends below said trailing edge of said duct.
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Abstract
A system for augmenting ducted fan thrust is provided, the system including a peripheral ejector comprised of inner and outer cowling members. With the addition of actuators mounted between the trailing edges of the inner and outer cowling members, the system may be used to generate control moments in the ducted fan. The peripheral ejector may be segmented to form discrete ejector control sections.
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Citations
29 Claims
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1. An airflow augmentation system for a ducted fan, wherein said ducted fan is comprised of a duct and a propeller, the airflow augmentation system comprising:
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an inner cowling member, wherein said inner cowling member is mechanically mounted to an inside surface of a trailing edge of said duct via a plurality of inner cowling stand-offs, wherein said inner cowling member is mounted within the downwash of said propeller, and wherein a trailing edge of said inner cowling member extends below said trailing edge of said duct; and an outer cowling member, wherein said outer cowling member is mechanically mounted to an outside surface of said trailing edge of said duct via a plurality of outer cowling stand-offs, and wherein a trailing edge of said outer cowling member extends below said trailing edge of said duct. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification