Abstract: In an exemplary embodiment, the present invention includes a casing rotation system for use in connection with a well that has a casing deployed inside a wellbore, in which the casing a shoe track and a production section with a rotatable portion. The casing rotation system has a swivel connected to an uphole end of the rotatable portion of the production section, and a motor connected to the rotatable section of the production section. The motor is configured to rotate the rotatable section of the production section.

Abstract: A hybrid rotary aircraft includes a body having an inner area; a plurality of arms rigidly attached to and extending from the body; a plurality of rotor assemblies pivotally engaged with the plurality of arms; a first gas engine; and a first brushless electric generator rotatably attached to the first gas engine and conductively coupled to each of the brushless electric motors. The plurality of rotor assemblies each having a brushless electric motor; and a rotor blades rotatably attached to the brushless electric motor.

Abstract: A hybrid rotary aircraft includes a body having an inner area; a plurality of arms rigidly attached to and extending from the body; a plurality of rotor assemblies pivotally engaged with the plurality of arms; a first gas engine; and a first brushless electric generator rotatably attached to the first gas engine and conductively coupled to each of the brushless electric motors. The plurality of rotor assemblies each having a brushless electric motor; and a rotor blades rotatably attached to the brushless electric motor.

Abstract: A hybrid rotary aircraft includes a body having an inner area; a plurality of arms rigidly attached to and extending from the body; a plurality of rotor assemblies pivotally engaged with the plurality of arms; a first gas engine; and a first brushless electric generator rotatably attached to the first gas engine and conductively coupled to each of the brushless electric motors. The plurality of rotor assemblies each having a brushless electric motor; and a rotor blades rotatably attached to the brushless electric motor.

Abstract: A measuring device for measuring a body part of a patient is described. One embodiment of the measuring device includes a reference component capable of being secured to a body part of a patient. The reference component provides a reference point. An articulated measurement arm is movably coupled to the reference component. The articulated measurement arm has a plurality of sections, each section having a measurement point. A plurality of sensors is associated with the measurement points. The sensors are capable of providing a plurality of data sufficient to allow determination of a position of each measurement point relative to the reference point.