Abstract: A first-stage turbine that is adapted for receiving high energy air directly from a combustion chamber in a gas turbine engine auxiliary power unit includes a disk formed from a first alloy and having an outer surface, and a unitary blade wheel formed from a second alloy that is different than the first alloy. The unitary blade wheel includes an annular member having an inner surface that is joined to the disk, and blades that are integrally formed with the annular member.

Abstract: In at least one embodiment of the present invention, a computer implemented method for journalizing financial information for a multi-company accounting system is provided. The method comprises creating a journal. Input detail lines of the financial data are entered to define the journal. The journal is released within the multi-company accounting system to limit changes to the input detail lines to define a released journal. Multi-company detail lines are added to the released journal including for a sum that is not zero of the debits and credits by GL date for a corresponding company of the multi-company group that is not the main company of the journal, the multi-company accounting system will automatically add a pair of the multi-company detail lines to balance monies owed between the main company and the corresponding company.

Abstract: According to an exemplary embodiment, a method includes the step (910) of driving a buck section of a DC/DC converter with a buck signal that has a buck duty cycle and concurrently with driving the buck section, driving a boost section of the DC/DC converter with a boost signal that has a boost duty cycle, a difference existing between the buck duty cycle and the boost duty cycle. The method also includes the step (920) of monitoring an input voltage that is coupled to the buck section for a change in the input voltage, and in response to a change in the input voltage, the step (930) of changing the buck duty cycle and the boost duty cycle such that the difference between the buck duty cycle and the boost duty cycle is substantially constant.