Abstract: A current sense transformer is provided for which includes a bobbin; the bobbin includes a winding portion for supporting a coil of wire. The winding portion includes a horizontal substantially flat base portion, a horizontal substantially flat top portion and a step portion. The step portion is disposed on top of the horizontal substantially flat base portion. The horizontal substantially flat top portion is disposed on top of the step portion substantially in parallel to the horizontal substantially flat base portion. The top portion has a central recess, raised portions on its upper surface separated from each other, and a ridge on one side of its lower surface. The central recess and the raised portions cooperate to accept a magnetic core, such that the core is substantially flush with the raised portions.

Abstract: A wide channel seal for impeding the leakage of a gaseous medium between the rotor and stator of a rotary machine is disclosed. Various construction details including the use of a honeycomb facing material on the stator side of the channel and the use of a grooved cylindrical surface on the rotor side of the channel are discussed. A comparison in sealing effectiveness between a conventional wide channel seal and the wide channel seal of the present invention is made.

Abstract: A combustion apparatus for gas turbine engines employs a combustion liner structure adapted to promote complete combustion of liquid hydrocarbon fuel and minimize undesired combustion products. Compressed primary air flows radially inward with swirl into a prechamber into which fuel is sprayed. Except during start-up, the air is heated. Normally, the air mixes with and evaporates the fuel and the mixture flows through a throat into a reaction chamber. The upstream end of the reaction chamber is bounded by a conical annular wall. The liner wall downstream of the throat defines the reaction zone to which additional primary air is fed and a dilution zone to which secondary air is admitted. The area of the primary air entrance is variable to maintain a lean fuel-air ratio in the reaction zone throughout the operating regime.