×

High to low pressure spool summing gearbox for accessory power extraction and electric start

  • US 7,882,691 B2
  • Filed: 07/05/2007
  • Issued: 02/08/2011
  • Est. Priority Date: 07/05/2007
  • Status: Active Grant
First Claim
Patent Images

1. A turbine engine comprising:

  • low and high pressure spools;

    a high power take-off shaft coupled to the high pressure spool;

    a first auxiliary component configured to be driven by the high power take-off shaft at a first speed;

    a gearbox interconnecting the low pressure spool to the first auxiliary component, the gearbox configured to drive the first auxiliary component at a second speed greater than the first speed;

    a low power take-off shaft coupled to the low pressure spool and a second auxiliary component configured to be driven by the low power take-off shaft;

    wherein the gearbox interconnects the low and high power take-off shafts; and

    wherein the gearbox includes an epicyclic gear train configured to receive a rotational input from the low power take-off shaft for increasing a rotational speed provided to the second auxiliary component.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×