"A spacecraft having a triangular hull with vertical electrostatic line charges on each corner that produce a horizontal electric field parallel to the sides of the hull. This field, interacting with a plane wave emitted by antennas on the side of the hull, generates a force per volume combining both lift and propulsion."
https://patents.google.com/patent/US20060145019A1/en
"The invention relates to a UFO which comprises a cabin body, a control system, an electronic system, a cabin inboard facility, a fuel system, an ignition system and a starting system, wherein the cabin body is provided with a cabin body motion direction adjusting device and a cabin body stabilization adjusting device. A mass energy machine is arranged on the cabin body, and comprises a flywheel shaft, a flywheel and air cylinders, wherein the flywheel shaft is connected with the cabin body; the flywheel shaft is provided with the flywheel; a linear particle generating chamber is arranged on the flywheel, and the middle part of the linear particle generating chamber is provided with an air inlet hole; the air cylinders are arranged on the periphery of the flywheel; the end of the air cylinder near the flywheel shaft, is provided with an air inlet of the air cylinder; the air inlet of the air cylinder is communicated with the periphery of the linear particle generating chamber; an igniter is arranged on the air cylinder; the included angle between the air jet direction of the air cylinders and the radius of the flywheel is phi1; and the included angle between the air jet direction of the air cylinders and flywheel plane vertical to the flywheel shaft is phi2. The invention has the same characteristics with the legendary UFO and USO, can get rid of gravitation, can momentarily realize high speed, can use any element or dark matter as fuel, can submerge into sea and travel in galaxy, replace all of transportation tools, have excellent priority, and can become the final transportation tool."
https://patents.google.com/patent/CN101797980A/en
"An anti gravity system with a hallow metal sphere (7) placed inside a very strong hallow outer metal sphere (1) with a clearance in between the two and the outer sphere having a sump at bottom, the clearance (8) between the spheres filled with mercury or lead, the sump (2) having an electric resistance coil (3) connected to a generating unit (4) via a transformer generates high temperature in the matter in between the spheres and a force is applied on the inner face of the outer sphere by the inner hallow sphere and the system looses its weight depending on the temperature."
https://patents.google.com/patent/WO2001009509A3/en
"The invention discloses a mercury sphere antigravity propelling device which comprises a shell, an insulating partition, a strip-shaped super-conductive magnet, a positive electrode wall, a negative electrode wall, a buffer layer, an annular insulating cambered surface, a first capacitor and a second capacitor. The positive electrode wall, the negative electrode wall, the insulating partition and the annular insulating cambered surface form a closed annular channel, and a certain amount of mercury is filled in the annular channel. After the power supply is switched on, the mercury rotates anticlockwise at high speed under the action of electromagnetic force, and thrust in a direction deviating from the center of the shell is applied to the wall surface of the whole negative electrode due to centrifugal action. The direction of the total thrust is opposite to that of the gravitational pull, so that the influence of the gravitational pull is counteracted, and the device has the antigravity propelling capacity. The invention can freely go in and out of the earth's atmosphere without depending on the propulsion of the acting force and the counterforce of the air, can also keep static in any space, gets rid of the dependence on conventional fuel and air, and can meet the aim of flying in the space for a long time."
https://patents.google.com/patent/CN110857151A/en
"A craft using an inertial mass reduction device comprises of an inner resonant cavity wall, an outer resonant cavity, and microwave emitters. The electrically charged outer resonant cavity wall and the electrically insulated inner resonant cavity wall form a resonant cavity. The microwave emitters create high frequency electromagnetic waves throughout the resonant cavity causing the resonant cavity to vibrate in an accelerated mode and create a local polarized vacuum outside the outer resonant cavity wall."
https://patents.google.com/patent/US10144532B2/en
"A high frequency gravitational wave generator including a gas filled shell with an outer shell surface, microwave emitters, sound generators, and acoustic vibration resonant gas-filled cavities. The outer shell surface is electrically charged and vibrated by the microwave emitters to generate a first electromagnetic field. The acoustic vibration resonant gas-filled cavities each have a cavity surface that can be electrically charged and vibrated by acoustic energy from the sound generators such that a second electromagnetic field is generated. The two acoustic vibration resonant gas-filled cavities are able to counter spin relative to each other to provide stability, and propagating gravitational field fluctuations are generated when the second electromagnetic field propagates through the first electromagnetic field."
https://patents.google.com/patent/US10322827B2/en
"A plasma compression fusion device which includes a hollow duct and at least one pair of opposing counter-spinning dynamic fusors. The hollow duct includes a vacuum chamber disposed within the hollow duct. Each dynamic fusor has a plurality of orifices and an outer surface which is electrically charged. In combination, the pair(s) of dynamic fusors create a concentrated magnetic energy flux and electromagnetic radiation within the vacuum chamber, whereby the concentrated magnetic energy flux compresses a mixture of gases that are injected through the orifices to the vacuum chamber such that a plasma core is created, and the to electromagnetic radiation heats the plasma core, while produced magnetic fields confine the plasma core between the dynamic fusors, such that when an additional mixture of gases is introduced into the plasma core through the orifices, an energy gain is created."
https://patents.google.com/patent/US20190295733A1/en
"The electromagnetic field generator includes a shell, an electrostatic generator, a power plant, a thermoelectric generator, and an electric motor. The shell has embedded polycrystalline ferroelectric ceramic material which is polarized such that the ceramic material exhibits strong Piezoelectric Effect properties thus inducing high frequency vibrations. The shell may be further doped with radioactive elements which under high frequency vibrations induce gamma ray emission. The electrostatic generator is for charging up the shell and is disposed within the shell. The power plant is to generate thermal power, and is disposed within the sphere. The thermoelectric generator is to convert the thermal power generated by the power plant to electrical energy. The electric motor powered by the electrical energy generated by the thermoelectric generator, and supplies input voltage such that the shell spins at high angular speeds, vibrates at high frequencies, and generates an electromagnetic field."
https://patents.google.com/patent/US10135366B2/en?inventor=Salvatore+Pais&oq=inventor:(Salvatore+Pais)
A hybrid craft using an inertial mass modification device
https://arc.aiaa.org/doi/pdf/10.2514/6.2017-5343
What Is Behind The U.S. Navy’s ‘UFO’ Fusion Energy Patent?
https://www.forbes.com/sites/arielcohen/2021/02/08/what-is-behind-the-us-navys-ufo-fusion-energy-patent/?sh=1131b3534733
The Navy Finally Speaks Up About Its Bizarre “UFO Patent” Experiments
https://www.thedrive.com/the-war-zone/39012/the-navy-finally-speaks-up-about-its-bizarre-ufo-patent-experiments