USA as Represented by Secretary of the Navy

Other

Thomas J Gieseke

Robert Kuklinski

Abraham N Varghese

William H Nedderman

Charles H Beauchamp

Jeffrey L Cipolla

Charles J Patrissi

Nicholas Bitsakis

Benoit G Gauthier

Michael W Williams

Kyrill V Korolenko

John R Grant

An apparatus is provided for obtaining fluid samples with the apparatus having a tubular body with a top and a bottom. A spring operated plunger shaft extends axially from the top to the bottom of the tubular body. A sample volume cap is attached to an end of the spring operated plunger shaft. A plunger is attached to the spring operated plunger shaft. A fusible link is used to maintain the spring operated plunger shaft in a first position. Upon activation of the fusible link, axial motion of the spring operated plunger shaft draws fluid into the tubular body trapping the fluid between the plunger and the sample volume cap inside the tubular body.

Fluid sampler

Particles are provided which have a bulk modulus that varies nonlinearly with changes in pressure. The shell having a shell and a core is manufactured from a solid elastic material as a tube shape with a closure at both ends. The core is manufactured from a material having a bulk modulus less than the bulk modulus of the shell material and is pressurized. A system for fabricating the particles operationally includes a first pair of crimping wheels, a second pair of crimping wheels, and a pair of cutting wheels. During manufacture, feed stock is fed along a central line of symmetry; first passing between the first pair of crimping wheels, between the second pair of crimping wheels, and then between the cutting wheels. Particles are created by crimping, sealing and cutting sections of the feed stock to form individual or strings of particles.

Nonlinear bulk modulus material

An adapter cage is provided for a compressed gas launcher to multiply launch velocity. Kinematics of wheels integral to the adapter cage results in a doubling of the pusher plate velocity as that motion is imparted on a light-weight launch vehicle. The wheels of the adapter cage can press against the launch vehicle and the wheels are pressed against the walls of the launcher for employing friction at the interface of the wheels and the inner surface of the launcher to transfer motion to force out a muzzle cap of the launcher and to enable launch of the launch vehicle.

Launch speed multiplier

An apparatus for creating on-command buoyancy is provided with an elastically deformable and axially elongated watertight hollow shell having a plurality of leaf springs and enveloped by a flexible skin. When flattened, the shell has a small internal volume and is negatively buoyant. The hollow shell is held in this position by a latch mechanism. When the mechanism is released, the leaf springs expand to increase the internal volume of the shell. In this state, the system is buoyant. A release mechanism for the latch bar is provided in a forward closure to permit transition from negatively buoyant to a buoyant configuration when an external signal is received.

Deep water buoyancy device

An impulse launcher is provided with a motor to store rotational kinetic energy in a flywheel. The stored kinetic energy is released using a planetary gear transmission that links the flywheel to a drive shaft. The kinetic energy is released when the planetary gear carrier is decelerated using a brake. The planetary gear carrier deceleration forces rotational acceleration of the drive shaft and deceleration of the flywheel. The drive shaft turns a primary drive sprocket and a secondary drive sprocket which pulls a studded drive belt which in turn drives a projectile located between the studded belt and a guide. The planetary gear system and belt drive allow rapid transfer of energy from the flywheel to a projectile.

Catapult launcher

An impulse pump is provided with a low power motor to store rotational kinetic energy in a flywheel. The stored kinetic energy is released using a planetary gear transmission that links the flywheel to a pusher shaft. The kinetic energy is released when the planetary gear carrier is decelerated using a caliper brake. The planetary gear carrier deceleration forces rotational acceleration of the pusher shaft and deceleration of the flywheel. Through a cam roller contact point between the pusher shaft and the cam raceway on the plunger; the rotational motion of the pusher shaft is converted to linear and translational motion of the plunger. The translational motion of the plunger allows impulse jet energy to be rapidly released from a nozzle of the pump.

Method to form impulse jet

The present invention includes a heat exchanger reactive to external and internal temperatures for carrying a working fluid, including two pairs of nested pipes; each pair including one pipe with a channel portion and a stress relief portion and a second pipe with just a channel portion, one of said pipes enclosing the other with an interference fit and both pipes having different coefficients of thermal expansion. The first pair of pipes positioned co-axially with and encompassing the second pair. A fluid is positioned in the space defined by the inner surface of outer pair of pipes and the outer surface of inner pair of pipes. The two pipe pairs have positions responsive to the internal and external temperatures in which the space defined by pipe pairs is either minimized or maximized by expansion and contraction of the pipe pairs caused by differences in coefficients of thermal expansion.

Heat exchange system reactive to internal and external temperatures

Heat exchanger reactive to internal and external temperatures

Impulse pump

A system for three-dimensional tracking of high speed undersea projectiles may utilize a distributed field of randomly positioned passive acoustic sensors. The system measures variables related to the pressure field generated by a supercavitating projectile in flight wherein the amplitude of the pressure generated at a point in space is related to the projectile dimensions, velocity, and trajectory. The system iteratively processes data from the sensors to measure launch velocity, flight direction (trajectory), ballistic coefficient (drag), and/or maximum range.

Supercavitating projectile tracking system and method

A method for localizing the range and bearing of a distant underwater object includes firing a preselected number of supercavitating projectiles sequentially from a firing location such that each projectile tracks along substantially the same trajectory. Supercavitating pellets are dispersed from a projectile at a pre-selected range. Acoustic signals are sensed to detect acoustic signals caused by supercavitating pellet impact with an object. These signals can be processed to determine the range and bearing to the object. In further steps the range and bearing can be used to aim the projectiles.

Method for finding range and bearing to underwater object

A synthetic muscle comprises an outer layer having an interior filled with a proton containing electrolyte. A first electrode extends into the interior, and a second electrode extends through the interior. The second electrode is attached to the outer layer at two locations. An ion selective microporous membrane extends through the interior along the length of the second electrode and is also attached to the out layer at the two locations. The ion selective membrane is also attached to the second electrode at a plurality of points along its length, defining a plurality of pockets of the ion selective membrane. The ion elective membrane is generally disposed between the two electrodes. The two electrodes are in communication through a power source. Using the power source, an electroosmotic flow is established across the ion exchange membrane from the first electrode to the second electrode, inflating the pockets and constricting the outer layer.

Membrane pump for synthetic muscle actuation

An underwater supercavitating projectile includes means to form ripples on its surrounding cavity so as to provide well-defined disturbances of the cavity boundary. As the ripples move aft of the supercavitating projectile and into the wake behind the advancing projectile, the ripples detach to form a pattern of vapor bubbles in the wake that are distinct in both size and regularity from the typical vapor bubbles formed as the cavity collapses behind the advecting projectile. Sensors record the track of the projectile along its path based on the distinct acoustic signature of the vapor bubbles. Combined with the acoustic echo from a target, the relative distance of the projectile to the target can be determined using methods known in the art. Multiple projectile trajectories are used to increase the ability to resolve the target by adjusting the aiming of the projectiles to reduce the relative distance.

Underwater acoustic tracer system

A high velocity acoustic signal producing underwater shotgun system for dispersing a plurality of relatively small supercavitating projectiles over a wide spatial field at long range using the dynamics of cavity collapse for better target localization in underwater mine clearance. A typical supercavitating projectile design is enhanced to produce a two-staged projectile in order to accomplish this innovation. The first stage of the two stage design allows for the long range firing underwater typical of a supercavitating projectile while the second stage permits the coverage of a wide area with a plurality of small supercavitating projectiles just as the first stage projectile reaches its fixed range. A distinctive feature of the radiated noise from a supercavitating projectile contacting a solid object is used in conjunction with the two stage projectile design to provide a system for underwater mine clearance verification. The distinctive noise signal may also be used in conjunction with an underwater targeting system to help identify, localize and track targets as well.

Acoustic shotgun system

A high speed underwater projectile configuration that includes a cylindrical telescoping cavitator design capable of providing projectile nose shape change where such change to the projectile nose tip geometry results in supercavitation and a concomitant vaporous cavity in the water that reduces projectile drag resistance while maximizing projectile range and where the projectile nose tip further includes a retractable cavitator piston feature. The projectile nose is designed to house a cylindrical cavitator piston that protrudes forward from the projectile and is held in place until launch. Velocity induced hydrodynamic forces on the forward face of this cavitator piston cause the piston to start moving aft and to gradually cause the piston to retract into the projectile nose, until a larger, secondary cavitator is exposed to the vaporous cavity.

Growing community of inventors

Newport, RI, United States of America

Thomas J Gieseke