Submarine Umbilical
US Positioning Group has a contract with the Naval Surface Warfare Center, Dahlgren Division, for “Wireless Power and Communications Umbilical for Weapons Systems.”
The project involves developing a wireless communications and power transfer link between submarine combat control systems and missiles inside submarine launch tubes. The work is sponsored by the Navy’s Strategic Systems Office and is a Small Business Innovation Research (SBIR) Phase I award.

To execute this project, US Positioning has developed a wireless link between the submarine missiles and control systems to benefit system reliability, safety, and eliminate some important weapon loading issues. USP’s approach is based on electromagnetic induction.

USP is nearly the end of the Phase I effort and has been invited to submit a $750,000 (with $500,000 options) Phase II proposal. The Phase II program will develop a prototype and demonstrate a robust wireless communications and power transfer link between a submarine fire control system and encapsulated weapons loaded in submarine launch tubes. In the Phase I effort, it was demonstrated that the electromagnetic induction link was feasible for both power and communications between a launch control system and an encapsulated weapon.

Specifically, the Phase II SBIR research project will result the development and demonstration of the concept using advanced prototypes and demonstration with a TACMS simulation system. As in the Phase I effort, USP will continue to use finite element analysis and communications modeling for engineering design effort. This will be followed by laboratory and bench-top hardware testing. The results of this effort can be used to begin actual SSGN implementation design efforts.
© 2004, US Positioning Group, LLC

 So are they saying wireless electric?

If I recall some of Tesla's work, you can transmit power through the air.  

You can do it easily with microwave, so I understand.  

Laser beam and solar cells.

Wireless electric is neither new nor revolutionary.  My Braun electric toothbrush uses such a system to recharge the batteries.  Think transformer-type technology.

as I recall either tesla or another smart man figured a way to transmit power through the earth.

no wires just get the power right from the ground.

I have no idea how it works, I just heard the story.

Quoted: Wireless electric is neither new nor revolutionary.  My Braun electric toothbrush uses such a system to recharge the batteries.  Think transformer-type technology.

That is called induction.  Only works over a short range, usually.  My Braun toothbrush does the same thing. ;)  

Quoted: Quoted: Wireless electric is neither new nor revolutionary.  My Braun electric toothbrush uses such a system to recharge the batteries.  Think transformer-type technology. That is called induction.  Only works over a short range, usually.  My Braun toothbrush does the same thing. ;)

Thanks Matt I had a brain cramp and couldn't remember 'induction' just how it works.

And short range is just fine for SLBMs sitting in their tubes.

Quoted: Laser beam and solar cells.

Or magnetic coils.  Higher efficiency and less to break.

(Braun) Short range = Induction.

Tesla was transmitting power for several miles in the early part of the 1920's (If I recall correctly)

2 very different things.


Tall Shadow

Quoted: (Braun) Short range = Induction. Tesla was transmitting power for several miles in the early part of the 1920's (If I recall correctly)

You are correct on both counts.

For the Navy requirments induction is the best option.

Tesla was transmitting power on a larger scale and I'd be interested in seeing how it effected RF communications in the area (I'll bet it screwed them up royally).

BTW right now there is a device you can buy that produces power from the air in the manner similar to what Tesla was doing.  This unit takes advantage of all the RF comms and uses the energery from the transmissions to produce a small amount of power.  It's designed to power extreamly remote sensors for scientific experiments which don't require much electricity.

At night, carry some florescent light bulbs under the high tension wires - they will LIGHT UP.


Induction

The Wireless Electricity Of Nikola Tesla .....by Melvin D. Saunders    ....If a single one-megaton nuclear warhead were exploded 300 miles over the center of the country, a high-voltage electromagnetic pulse would in theory disrupt communication and electrical systems all over the continental U.S. Gamma rays emitted by such an explosion would instantly strip away the electrons from air molecules in the upper atmosphere in roughly a circular, pancake-shaped zone. The free electrons would then accelerate radially with the earth's magnetic field, separating from the heavier, positively charged ions and creating a downward directed high-voltage electromagnetic pulse. This in turn results in electrical surges in all exposed conductors on the ground.    ........When Nikola Tesla discovered alternating current (AC) electricity, he had great difficulty convincing men of his time to believe in it. Thomas Edison was in favor of direct current (DC) electricity and opposed AC electricity strenuously. Tesla eventually sold his rights to his alternating current patents to George Westinghouse for $1,000,000. After paying off his investors, Tesla spent his remaining funds on his other inventions and culminated his efforts in a major breakthrough in 1899 at Colorado Springs by transmitting 100 million volts of high-frequency electric power wirelessly over a distance of 26 miles at which he lit up a bank of 200 light bulbs and ran one electric motor! With this souped up version of his Tesla coil, Tesla claimed that only 5% of the transmitted energy was lost in the process. But broke of funds again, he looked for investors to back his project of broadcasting electric power in almost unlimited amounts to any point on the globe. The method he would use to produce this wireless power was to employ the earth's own resonance with its specific vibrational frequency to conduct AC electricity via a large electric oscillator. When J.P. Morgan agreed to underwrite Tesla's project, a strange structure was begun and almost completed near Wardenclyffe in Long Island, N.Y. Looking like a huge lattice-like, wooden oil derrick with a mushroom cap, it had a total height of 200 feet. Then suddenly, Morgan withdrew his support to the project in 1906, and eventually the structure was dynamited and brought down in 1917.    ........A Tesla coil is a special transformer that takes a small amount of power and boosts it rapidly to a great deal of power. The high-frequency output of even a small Tesla coil can light up fluorescent tubes held several feet away without any wire connections. Even a large number of spent or discarded fluorescent tubes (their burned out cathodes are irrelevant) will light up if hung near a long wire running from a Tesla coil while using less than 100 watts drawn by the coil itself when plugged into an electrical outlet! Since the Tesla coil steps up the voltage to such a high degree, the alternating oscillations achieve sufficient excitations within the tubes of gases to produce lighting at a minimal expense of original power! Fluorescent tubes can be held under high-tension wires to produce the same lighting up effect. Remember the farmer a few years ago who was caught with an adaptive transformer under a set of high tension lines that ran over his property? Through the air, he pulled down all the power he needed to run his farm without using any connecting apparatus to the lines overhead! Any electrical engineer with the proper materials can do the same thing.    ........Incandescent bulbs burn high resistance filaments that gobble up energy. Fluorescent tubes burn filaments (cathodes) to create an electrical flow that sets their internal phosphorus coatings aglow. Using a Tesla coil, high voltage AC can light up glass-enclosed vacuum bulbs coolly without any gases inside them at all! Any number of cold light bulbs can be lit using only one Tesla coil, and since there is nothing inside them to burn out, they can last indefinitely. It seems like a low cost form of street lighting, doesn't it?    ........When Tesla was determining the resonant frequencies of the earth to potentially transmit unlimited electric power, he also recognized frequencies that acted as a damping field to nullify electric power. With the advent of the wireless and Tesla's unique investigations into broadcasting electricity, a dozen or more inventors thereafter announced their own means for transmitting electrical energy without wires. One British inventor, H. Grindell-Matthews, actually demonstrated his "mystery ray" apparatus in 1924 to a Popular Science Monthly writer in London (See: Pop. Sci. Monthly, Aug. 1924, P. 33). When his beam was directed toward the magneto system of a gasoline engine, it stopped the system. Afterwards, it ignited gun powder, lit an electric lamp bulb from a distance and killed a mouse in seconds! Grindell-Matthews said the secret was involved with the "carrier beam" he used to conduct a high-voltage, low-frequency electrical current. During 1936, Guglielmo Marconi experimented with extremely low frequency (ELF) waves and displayed their exceptional ability to penetrate metallic shielding. These waves could affect electrical devices, overload circuits and cause machines like generators, electric motors and automobiles to stall. Diesel engines, which do not rely on electrical ignition, were not affected. Mysteriously, Marconi's research on the subject was never found after the war.

Quoted: (Braun) Short range = Induction. Tesla was transmitting power for several miles in the early part of the 1920's (If I recall correctly) 2 very different things. Tall Shadow hr

There is a very cool Museum in Colorado Springs dedicated to just his work.