A fluid system for use with a gas turbine engine includes a reservoir having a reservoir inlet and a reservoir outlet and includes a supply assembly positioned in the reservoir. The supply assembly includes a first passage, a second passage, and a valve disc. The first and second passages are fluidi
A fluid system for use with a gas turbine engine includes a reservoir having a reservoir inlet and a reservoir outlet and includes a supply assembly positioned in the reservoir. The supply assembly includes a first passage, a second passage, and a valve disc. The first and second passages are fluidically connected to the reservoir outlet. The valve disc is positioned in the first passage. The valve disc is pivotable about an axis and is weighted to have a center of gravity offset from the axis.
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1. A fluid system for use with a gas turbine engine, the fluid system comprising: a reservoir having a reservoir inlet and a reservoir outlet; anda supply assembly positioned in the reservoir, the supply assembly comprising: a first passage fluidically connected to the reservoir outlet;a second pass
1. A fluid system for use with a gas turbine engine, the fluid system comprising: a reservoir having a reservoir inlet and a reservoir outlet; anda supply assembly positioned in the reservoir, the supply assembly comprising: a first passage fluidically connected to the reservoir outlet;a second passage fluidically connected to the reservoir outlet, wherein the second passage is free of valves; anda valve disc positioned in the first passage, wherein the valve disc is pivotable about an axis and is weighted to have a center of gravity offset from the axis. 2. The fluid system of claim 1, wherein the first passage has a first passage inlet, the second passage has a second passage inlet, and the second passage inlet is nearer a top of the reservoir than the first passage inlet. 3. The fluid system of claim 1, wherein the valve disc is weighted such that the first passage is open under positive gravity conditions and closed under negative gravity conditions. 4. The fluid system of claim 3, wherein the valve disc includes a first material on a first side of the axis, the valve disc includes a second material on a second side of the axis, and the second material has a greater density than that of the first material. 5. The fluid system of claim 3, wherein the valve disc includes a weighted mass attached to a first side of the valve disc. 6. The fluid system of claim 3, wherein the valve disc is weighted via a connecting mass. 7. The fluid system of claim 6, wherein the connecting mass is positioned outside of the first passage and is connected to the valve disc via an axis pin extending through the first passage. 8. The fluid system of claim 7, wherein the supply assembly further comprises: a block attached to an outer surface of the first passage and positioned to stop rotation of the valve disc when the valve disc is rotated to a closed position. 9. The fluid system of claim 1, wherein the supply assembly further comprises a connection passage fluidically connecting the reservoir outlet to the first and second passages. 10. The fluid system of claim 9, wherein the supply assembly is substantially Y-shaped with the second passage being longer than the first passage. 11. The fluid system of claim 1, wherein the second passage is open under positive gravity conditions and negative gravity conditions. 12. A lubrication system for use with a gas turbine engine, the lubrication system comprising: a reservoir having a reservoir inlet and a reservoir outlet; anda supply assembly positioned in the reservoir, the supply assembly comprising: a first passage fluidically connected to the reservoir outlet;a second passage fluidically connected to the reservoir outlet, wherein the second passage is free of valves; anda pivotable valve fluidically connected to the first passage and configured to be open under positive gravity conditions and to be closed under negative gravity conditions. 13. The lubrication system of claim 12, wherein the first passage has a first passage inlet, the second passage has a second passage inlet, and the second passage inlet is nearer a top of the reservoir than is the first passage inlet. 14. The lubrication system of claim 12, wherein the pivotable valve comprises a valve disc that is weighted so as to pivot open under positive gravity conditions and pivot closed under negative gravity conditions. 15. A gas turbine engine comprising: a spool comprising a compressor and a turbine connected by a spool shaft;a fan;a fan drive gear system connecting the fan to the spool shaft such that rotation of the spool drives rotation of the fan;a reservoir having a reservoir inlet and a reservoir outlet, wherein the fan drive gear system is fluidically connected to the reservoir inlet and the reservoir outlet; anda supply assembly positioned in the reservoir, the supply assembly comprising: a first passage fluidically connected to the reservoir outlet;a second passage fluidically connected to the reservoir outlet, wherein the second passage is free of valves; anda pivotable valve fluidically connected to the first passage and configured to be open under positive gravity conditions and to be closed under negative gravity conditions. 16. The gas turbine engine of claim 15, and further comprising: a supply pump fluidically connected between the reservoir outlet and the fan drive gear system; anda scavenge pump fluidically connected between the fan drive gear system and the reservoir inlet. 17. The gas turbine engine of claim 15, wherein the fan drive gear system connects the fan to the spool so as to drive rotation of the fan at a slower speed than that of the spool. 18. The gas turbine engine of claim 15, wherein the pivotable valve comprises a valve disc that is weighted so as to pivot open under positive gravity conditions and pivot closed under negative gravity conditions. 19. The lubrication system of claim 15, wherein the first passage has a first passage inlet, the second passage has a second passage inlet, and the second passage inlet is nearer a top of the reservoir than is the first passage inlet.
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