Abstract: An assembly is provided for an aircraft. This aircraft assembly includes a powerplant. The powerplant includes a gas turbine engine, an exhaust nozzle and a flowpath extending from the gas turbine engine to the exhaust nozzle. The exhaust nozzle is movable between a first position and a second position. The exhaust nozzle is configured to exhaust combustion products, received through the flowpath from the gas turbine engine, when the exhaust nozzle is in the first position. The exhaust nozzle is configured to block flow of the combustion products through the flowpath when the exhaust nozzle is in the second position.

Abstract: A foam maker has a bucket and a lid. The bucket has an outlet port provided in one of its walls, and a delivery tube connected to the outlet port. The lid includes a lid base and a lid top. The lid base has a frame and a compartment that receives a fan, a motor coupled to the fan, and a fluid inlet port through which foam solution and water can be introduced. The lid top has a water/foam inlet opening that is aligned with the fluid inlet port, and an air inlet port that is positioned adjacent the fan. An air tube is disposed inside the bucket, and has a first end connected to the lid base and communicating with the fan, and an opposite second end having an open distal end that is immersed inside foam solution. The air tube further includes an air chamber positioned adjacent the open distal end.

Abstract: A piercing device for use in internally pierced blister delivery devices include a base, a piercer body and an internal fluid path. The internal fluid path includes one or more inlet channels into a central cavity which is connected to one or more delivery channels and exit ports. The cavity is defined by angular walls and top to create turbulence in the fluid flow and to produce a controllable spray, mist, drops, plume or stream delivery. The piercer body also provides a pointed lancet disposed in the center of the exit ports for piercing the lidstock of a formed blister.

Abstract: A method of forming a flexible structure for a rocket motor assembly comprises forming a polysiloxane composition comprising at least two different silicone materials. A preliminary structure is formed from the polysiloxane composition. The preliminary structure is cured to crosslink at least a portion of different polysiloxane chains of the preliminary structure. A flexible structure for a rocket motor assembly, a flexible assembly for a rocket motor assembly, a moveable thrust nozzle assembly for a rocket motor assembly, and a rocket motor assembly are also described.

Abstract: Provided is an exhaust nozzle and a method for changing an exhaust flowpath, whereby noise can be reduced by using a simple and light-weight mechanism without increasing the complexity and size of the structure of the exhaust nozzle, and furthermore, the efficiency during cruising at supersonic speeds can be improved. The rear end side of main nozzle pieces 110 of an exhaust nozzle 100 are provided swingably in an inward and outward direction of an exhaust flow path 101, about an open/close bend section 111 to the rear of an engine, coupling nozzle pieces 120 are coupled bendably to adjacent main nozzle pieces 110 on either side, and when the main nozzle pieces 110 are swung inside the exhaust flow path 101, the coupling nozzle pieces 120 form projecting sections 102 inside the exhaust flow path 101.

Abstract: A hair dryer includes a main dryer unit having a dryer outlet and a nozzle which is mounted on the main dryer unit. The nozzle includes a nozzle body and a rotational body. The nozzle body has a first end portion, a second end portion, and an engagement structure provided on the first end portion and is arranged for connecting to the air outlet of the hair dryer. The rotational body has an air-flowing channel longitudinally extended along an axis of the rotational body, an outer rotational surface, and a plurality of through air outlets provided on the outer rotational surface and is communicated with the air-flowing channel, wherein the rotational body is mounted at the second end portion of the nozzle body for allowing hair to be curled on the rotational surface and dried by air blowing out of the air outlets.

Abstract: A duct arrangement 18 for a waterjet propulsor 10. The duct arrangement 18 comprises a main duct 30 having an inlet 20. The inlet 20 has an elongate main portion 32 extending along a principal axis 34, and at least one lateral portion 36 in fluid communication with the main portion 34. The at least one lateral portion 36 extends part way only along the length of the main portion 34.

Abstract: The fastener fitting (40) has a first fastener zone (42) for fastening to an element (24) of the deployment mechanism. This fastener fitting (40) has two longitudinal arms (46A, 46B) that extend substantially in parallel and in the same direction from the first fastener zone (42). The free ends of these arms that are remote from the first fastener zone are separate, with each arm being provided with a distinct fastener surface (48A, 48B), these respective fastener surfaces together forming the second fastener zone.

Abstract: A turbofan engine includes a variable area fan nozzle which effectively changes the physical area and geometry within a fan bypass flow path to manipulate the pressure ratio of the bypass flow with a multitude of bladders circumferentially located about a core cowl.

Abstract: A bypass gas turbine engine includes a variable area fan nozzle with a second fan nacelle section axially movable relative to a first fan nacelle section to define an auxiliary port to vary a fan nozzle exit area and adjust fan bypass airflow. The second fan nacelle section includes a leading edge region that defines a concave external contour and the first fan nacelle section includes a trailing edge region that defines a convex internal contour.

Abstract: An exhaust includes a wall that has a first composite material having a first coefficient of thermal expansion and a second composite material having a second coefficient of the thermal expansion that is less than the first coefficient of thermal expansion.

Abstract: An adjustable nozzle comprising a nozzle body with an inlet, an outlet and a flow chamber having a smooth bore extending between the inlet and the outlet. An elastic water impervious material is in fluid communication with the inlet and is tapered and is able to expand due to its elasticity. An adjustable non-rusting member connected to the nozzle body expands or constricts to either increase or decrease the inner diameter of the nozzle body to adjust the flow rate through the nozzle.

Abstract: The present invention relates to an aircraft gas turbine with a core engine which is surrounded by a bypass duct enclosed radially outwards by a bypass wall, with a radially inner wall of the bypass duct forming with the radially outer bypass wall a bypass nozzle, and with the radially inner wall including an adjusting element extending along the circumference of the inner wall and being deformable radially outwards.

Abstract: A multi-layered honeycomb structure adapted to reduce and/or eliminate thermal deformation is disclosed herein. In some embodiments, walls of the honeycomb structure comprise a first layer, optionally, a second layer, and a core layer adjacent to the first layer or between the first and second layers. The first and second layers may be compositions of Inconel or other high strength materials. The core layer may be copper or another thermally conductive material. The core layer is adapted to transmit heat between a first region of a structure and a second region. In this manner, heat can be transferred from the heated region to an unheated region, thereby reducing the temperature difference between the regions and thus the amount of thermal deformation.

Abstract: A variable geometry (2) structure comprising: an flexural element (4); a tensioning element (6) connected to the flexural element (8); and an actuator (12) for adjusting the tensioning element (6) to change the load placed on the flexural element (4), thereby changing the geometry of the structure (2).

Abstract: A joint including a first component and a second component. The second component including a shape memory material component. The first component has a half dovetail shaped slot and the shape memory material second component has a half dovetail shaped attachment feature disposed in the half dovetail shaped slot in the first component.

Abstract: Integrated engine exhaust systems and techniques for operating integrated engine exhaust systems are disclosed. In one embodiment, a propulsion system includes an engine installation configured to be mounted on a wing assembly of an aircraft. The engine installation includes an engine, and an exhaust system operatively coupled to the engine. The exhaust system includes at least one nozzle to exhaust an exhaust flow from the engine. The nozzle includes a variable portion configured to vary an exit aperture of the nozzle from a first shape to a second shape to change a flowfield shape of at least a portion of the nozzle flowfield proximate the wing assembly, thereby reducing at least one of drag and thermal loading on the wing assembly. In a further embodiment, the exhaust system includes an inner nozzle that exhausts a core exhaust flow, and an outer nozzle that exhausts a secondary exhaust flow, the outer nozzle having the variable portion configured to vary the exit aperture of the outer nozzle.

Abstract: Integrated engine exhaust systems and methods for reducing drag and thermal loads are disclosed. In one embodiment, a propulsion system includes an engine installation configured to be mounted on a wing assembly of an aircraft. The engine installation includes an engine, and an exhaust system operatively coupled to the engine. The exhaust system includes at least one nozzle configured to exhaust an exhaust flow from the engine. The nozzle includes a variable portion configured to vary an exit aperture of the nozzle from a first shape to a second shape to change a flowfield shape of at least a portion of the nozzle flowfield proximate the wing assembly, thereby reducing at least one of drag and thermal loading on the wing assembly. In a further embodiment, the exhaust system includes an inner nozzle that exhausts a core exhaust flow, and an outer nozzle that exhausts a secondary exhaust flow, the outer nozzle having the variable portion configured to vary the exit aperture of the outer nozzle.

Abstract: An apparatus is provided that includes a body having a first wall and a second wall, at least one appending structure extending from an end of the body and at least one actuator positioned between the first and second walls. The actuator includes first end coupled to a portion of the body and a second end coupled to a portion of the appending structure. At least one shape memory alloy (SMA) wire is connected to and extends between the first and second ends of the actuator. The SMA wire is adapted to controllably constrict when activated by heat, whereby the constriction causes the appending structure to move from a first position to a second position.

Abstract: A second stage external jet nozzle mixer (20) includes identically formed lobes which equal in number the lobes of the first stage internal mixer. The external mixer works with the internal mixer, and furthers the mixing of the jet engine internal bypass flow with the internal jet engine core flow. This mixing levels the disparate flow velocities attendant with the jet engine exhaust, reduces the peak velocities from the jet engine core and increases the lower bypass velocities of the jet engine internal bypass flow. The lobes include complex curvatures that greatly enhance mixing of the gases and ambient cooling air, and thereby reduce noise. At the lobe terminus, the lobe dimensional characteristics may be adjusted to thereby adjust the total terminus area to achieve a match to a jet engine to cause that jet engine to run at a determined RPM and noise level. Noise attenuation may also be adjusted by changing lobe dimensions.

Abstract: A propulsion system for a jet- or rocket-propelled vehicle in which the resulting jet exhaust nozzle profile is a 3D spiral. The propulsion system can be applied to any jet- or rocket-propelled vehicle, including aircraft and watercraft.

Abstract: A method of assembling a gas turbine engine includes coupling an annular exhaust duct to the gas turbine engine, coupling a plurality of chevrons to the annular exhaust duct, and coupling a chevron actuation system to the annular exhaust duct such that selective operation of the chevron actuation system repositions the plurality of chevrons to adjust an amount convergence of the annular exhaust duct.

Abstract: The disclosed device is directed toward a periodic combustion propulsion system. The periodic combustion propulsion system comprises at least one periodic combustion chamber configured to contain periodic combustion and at least one supersonic exhaust nozzle coupled to the at least one periodic combustion chamber. The supersonic exhaust nozzle is configured with a variable exhaust expansion ratio.

Abstract: A high temperature sealing system is operative to seal an interface between adjacent hot structures and to minimize parasitic flow between such structures that move relative to one another in-plane or out-of-plane. The sealing system may be used to seal thrust-directing ramp structures of a reusable launch vehicle and includes a channel and a plurality of movable segmented sealing elements. Adjacent ramp structures include edge walls which extend within the channel. The sealing elements are positioned along the sides of the channel and are biased to engage with the inner surfaces of the ramp structures. The segmented sealing elements are movable to correspond to the contour of the thrust-directing ramp structures. The sealing system is operative to prevent high temperature thrust gases that flow along the ramp structures from infiltrating into the interior of the vehicle.