A thrust recovery outflow valve, comprising: a valve frame configured to be mounted on an aircraft exterior skin, the valve frame including an inner surface that defines a flow passage through the valve frame; and a bi-fold valve door mounted within the valve frame and comprising an aft door section and a forward door section, the aft door section rotationally coupled to the valve frame and rotatable, relative to the valve frame, about a first rotational axis between an aft door closed position and an aft door full-open position, the forward door section rotationally coupled to the aft door section and configured to receive a rotational drive torque, the forward door section rotatable, relative to the valve frame and the aft door section, about a second rotational axis between a forward door closed position and a forward door full-open position, wherein the bi-fold valve door is configured such that when a positive pressure is applied from the cabin side of the bi-fold valve door: the aft door section is in the aft door closed position whenever the forward door section is not in the forward door full-open position, and when the forward door section is in the forward door full-open position, the forward door section engages the aft door section to selectively transfer rotational drive torque supplied to the forward door section to the aft door section to rotate the aft door section, simultaneously with the forward door section, about the first rotational axis, to thereby rotate the aft door section between the aft door closed position and the aft door full-open position. a valve frame configured to be mounted on an aircraft exterior skin, the valve frame including an inner surface that defines a flow passage through the valve frame; and a bi-fold valve door mounted within the valve frame and comprising an aft door section and a forward door section, the aft door section rotationally coupled to the valve frame and rotatable, relative to the valve frame, about a first rotational axis between an aft door closed position and an aft door full-open position, the forward door section rotationally coupled to the aft door section and configured to receive a rotational drive torque, the forward door section rotatable, relative to the valve frame and the aft door section, about a second rotational axis between a forward door closed position and a forward door full-open position, wherein the bi-fold valve door is configured such that when a positive pressure is applied from the cabin side of the bi-fold valve door: the aft door section is in the aft door closed position whenever the forward door section is not in the forward door full-open position, and when the forward door section is in the forward door full-open position, the forward door section engages the aft door section to selectively transfer rotational drive torque supplied to the forward door section to the aft door section to rotate the aft door section, simultaneously with the forward door section, about the first rotational axis, to thereby rotate the aft door section between the aft door closed position and the aft door full-open position. the aft door section is in the aft door closed position whenever the forward door section is not in the forward door full-open position, and when the forward door section is in the forward door full-open position, the forward door section engages the aft door section to selectively transfer rotational drive torque supplied to the forward door section to the aft door section to rotate the aft door section, simultaneously with the forward door section, about the first rotational axis, to thereby rotate the aft door section between the aft door closed position and the aft door full-open position.