Ejection seat pan lifter
First Claim
Patent Images
1. An aircraft ejection seat assembly, comprising:
- a fixed frame including an elongate ledge extending lengthwise in a direction transverse to a forward direction;
a seat pan on which seating elements for seating first and second aircraft crewpersons of differing heights are disposable,the seat pan being pivotable about a hinge connected at a front edge of the seat pan and configured to assume a first pivot position associated with the first aircraft crewperson; and
a seat pan lifter comprising an elongated block selectively disposed lengthwise in the transverse direction on the ledge at a rear end of the seat pan, the seat pan lifter configured to thereby establish and support the seat pan in a second pivot position associated with the second aircraft crewperson;
wherein the seat pan pivots about the hinge relative to the fixed frame as the seat pan is pivoted from the first pivot positions to the second pivot position.
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Abstract
An aircraft is provided and includes a fixed frame including a ledge and a seat pan on which seating elements for seating an aircraft crewperson are disposable. The seat pan includes a hinge about which the seat pan is pivotable relative to the fixed frame and a flange disposable on the ledge to establish a first pivot position for the seat pan relative to the fixed frame and a seat pan lifter coupled to the fixed frame and selectively interposable between the flange and the ledge to establish a second pivot position for the seat pan relative to the fixed frame.
29 Citations
7 Claims
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1. An aircraft ejection seat assembly, comprising:
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a fixed frame including an elongate ledge extending lengthwise in a direction transverse to a forward direction; a seat pan on which seating elements for seating first and second aircraft crewpersons of differing heights are disposable, the seat pan being pivotable about a hinge connected at a front edge of the seat pan and configured to assume a first pivot position associated with the first aircraft crewperson; and a seat pan lifter comprising an elongated block selectively disposed lengthwise in the transverse direction on the ledge at a rear end of the seat pan, the seat pan lifter configured to thereby establish and support the seat pan in a second pivot position associated with the second aircraft crewperson; wherein the seat pan pivots about the hinge relative to the fixed frame as the seat pan is pivoted from the first pivot positions to the second pivot position. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification