DOW-UAP-D135 — Antigravity Concepts and Engineering Limits

The report states directly that no technology available in 2010 could actively control gravity.

To date, there is no technology that can achieve the active control of gravity.

It cautions that many reviewed concepts were nowhere near practical engineering implementation and presents its estimates as guides for possible research.

The reader should bear in mind that many of these concepts are nowhere near having any form of practicable engineering implementation.

A Newtonian cancellation scheme using ultradense compact matter is rejected as infeasible because the required material could not be created or handled.

they are unfortunately not feasible from an engineering standpoin t since one does not yet have the technology or means to create and handle ultradense compact matter.

The report estimates that negating Earth’s gravitational potential near its surface would require 62.5 megajoules per kilogram before implementation-specific adjustments.

Setting h ;::i Re and m = 1 kg in Equation (3), the result is E1ev = 62.5 MJ/kg.

Forward’s dipole gravitational-field model requires dwarf-star-density matter, kilometer-scale hardware, and extreme acceleration to approach a one-g effect.

the dwarf star density material within the pipes must achieve a acc = 10 11 m/s 2 in order to accomplish this effect.

Although the report derives relativistic repulsion terms, it says they had not been observed in laboratory experiments.

even though general relativity theory admits the generation of antigravity forces at relativistic velocities (Reference 19), they have not been seen in laboratory experiments

Its negative-energy shell estimate requires energy density comparable to dwarf-star or neutron-star density and calls implementation daunting.

Any realistic value that one chooses for the bubble wall thickness 8rwill give a negative energy density that will always be on the order of the equivalent negative energy density of a dwarf star or neutron star.

The report concludes that naturally occurring dark energy is far too diffuse for a useful near-term propulsion system.

it is highly unlikely, if not impossible, that one will be able to invent a technology in the near future that can acquire and exploit a near-cosmological amount of dark/vacuum energy

It calculates that quantum-gravity corrections are extraordinarily small and would not measurably affect a macroscopic propulsion system.

quantum gravity correction terms at any level of approximation, whether gravitationally repulsive or attractive, will have coefficients ~G(li 0 /cK)

A proposed multilayer Casimir device was estimated to produce only a minute force and still faced rigidity, roughness, and signal-modulation problems.

the overriding concern with performing an experiment to test F cocxr is whether cavities can be made sufficiently rigid, if the effect of surface roughness and defects can be quantified

The report notes that a Casimir-derived upward force would still have to exceed the full propulsion system’s weight to produce levitation.

the upward force will have to be larger than the weight of the propulsion system in order to achieve levitation.

Pinto’s interatomic-force thruster remained a proposal with unresolved confinement, lifetime, decay, ionization, and repopulation challenges.

Pinto identified numerous technical challenges that will have to be overcome before this concept can be put to practice.

The report’s conclusion says the mechanical embodiments require kilometer-scale apparatus, astronomical masses or densities, or extreme velocities and accelerations.

Mechanical embodiments that produce antigravity forces require kilometer-sized apparatus, astronomical-sized masses and densities, or extreme mass velocities and accelerations.

It says laboratory negative-energy production was limited to very small quantities and that the technologies were too immature to establish whether propulsion-scale amounts were possible.

Negative energy has been produced in the lab in very small quantities. The technologies used for producing negative energy are nascent

For dipole gravitational generators, the report again concludes that the needed densities, velocities, accelerations, and device sizes were beyond existing technology.

Presently, the technology does not exist to achieve the astronomical mass densities, extreme velocities or accelerations of mass motion, and the large device dimensions required

The report identifies reported rotating-ring effects as unconfirmed at the time rather than established evidence.

At the time of this writing these effects were being reported but not yet independently confirmed.