Abstract: A work vehicle comprising a frame supported by a ground engaging device. A boom assembly is coupled to the frame. An attachment coupler is coupled to the boom assembly. An electronic data processor is communicatively coupled to a boom actuator, an attachment coupler actuator, a boom sensor, an attachment coupler sensor, and an operator input device. A computer readable storage medium comprising machine readable instructions that, when executed by the processor, cause the processor to receive an operator input and for a tilt forward command, command the boom actuator to move the boom assembly to a frame contact position and then command the attachment coupler actuator to move the attachment coupler towards a lower position. For a tilt rearward command, command the attachment coupler actuator to move the attachment coupler towards an upper position and then command the boom actuator to move the boom assembly towards a raised position.

Abstract: Precursor solutions for radiation patternable coatings are formed with an organic solvent and monoalkyl tin trialkoxides in which the water content of the solvent is adjusted to be within 10 percent of a selected value. Generally, the water content of the solvent is adjusted through water addition, although water removal can also be used. In some embodiments, the adjusted water content of the solvent can be from about 250 ppm by weight to about 10,000 ppm by weight. With the appropriate selection of ligands, the adjusted precursor solutions can be stable for at least about 42 days, and in some cases at least 8 months.

Abstract: A turbine disk and blade arrangement having a plurality of turbine blades mounted circumferentially around a disk. Each blade has a fir tree root which provides a series of fore-to-aft-extending projections and grooves. The disk has a plurality of radially extending posts which define fir tree recesses therebetween. Each fir tree recess also provides a series of fore-to-aft-extending projections and grooves allowing each fir tree root to engage with a respective fir tree recess. On each pair of facing sides of the fir tree root and the fir tree recess, one or more projections of the fir tree roots and/or the fir tree recesses are truncated to form fore-to-aft-extending cooling passages. The arrangement has lock plates which cover forward and/or rearward surfaces of the posts and of the fir tree roots and define feed channels therebetween which feed cooling air to the respective cooling passage.

Abstract: A turbine disk and blade arrangement for a gas turbine engine has a plurality of turbine blades mounted circumferentially around a disk. Each blade has a fir tree root which provides, on circumferentially spaced sides thereof, a series of fore-to-aft-extending projections and grooves. The disk has a plurality of circumferentially spaced, radially extending posts which define fir tree recesses therebetween. Each fir tree recess also provides, on circumferentially spaced sides thereof, a series of fore-to-aft-extending projections and grooves. Each fir tree root is slidable into a respective fir tree recess with the projections and grooves on facing sides of the fir tree root and the fir tree recess interengaging with each other. On each pair of facing sides of the fir tree root and the fir tree recess, one or more of the projections of the fir tree roots and/or the fir tree recesses are truncated to form fore-to-aft-extending cooling passages between facing sides of the fir tree roots and fir tree recesses.