Patent ID: 9409652
Filing Date: 2016-08-09
CPC Classification: B64D,G05D,Y10T

Claim Text:
1. A dual pressure regulation system for aerial refueling operations comprising: a channel having an inlet and an outlet, wherein the inlet is connectable to a pipeline of a tanker aircraft and the outlet is connectable to a pipeline to a receiver aircraft, a first pressure regulator comprising a first restricting element linearly movable in the channel between a first position and a second position and configured to allow a first pressure drop through the inlet of the channel while in the first position and a second pressure drop while in the second position, and a second pressure regulator comprising a second restricting element linearly movable in the channel between a first position and a second position and configured to allow a first pressure drop through the outlet of the channel while in the first position and a second pressure drop while in the second position, wherein said first pressure regulator and said second pressure regulator are arranged in series lengthwise in said channel, a control element configured to control movement of the first and the second pressure regulators, wherein the control element is operatively connected to the pipeline to the receiver aircraft downstream the second pressure regulator and is configured to measure a delivery fuel pressure to the receiver aircraft and configured to move the first and the second pressure regulators according to the delivery fuel pressure to the receiver aircraft; a chamber within the channel and operatively connected to the first restricting element and the second restricting element such that the first and second restricting elements each move linearly with respect to the chamber, and the chamber comprises two separated cavities each of which is operatively connected a respective one of the first and second restricting elements, and an inlet fuel pressure line configured to provide pressurization to each cavity under control of the control element.