NASA’s Spin-Coupled Force Experiments

May 16, 2026

The POAMS Experiments and the Search for Propellantless Propulsion

On a precision scale inside NASA Marshall’s Propulsion Research Laboratory, a small rotor of bismuth spun between magnetic assemblies while Richard H. Eskridge—a veteran Marshall propulsion engineer whose career had ranged from laser propulsion and pulsed power to plasmoid thrusters and advanced-propulsion studies—looked for a signal measured in fractions of a gram but aimed at something larger: the possibility that angular momentum itself, organized through spin and nuclear alignment, could produce a measurable force. The experiment grew from NASA’s Space Act work with Quantum Machines, LLC, whose CEO Chris Milam brought the Pope-Osborne Angular Momentum Synthesis theory to Marshall and funded the effort; Eskridge, Michael A. Nelson, and Michael P. Schoenfeld then helped turn that radical idea into a proposed “spin-coupled force” and a sequence of gyroscope and bismuth-rotor experiments. It was not a finished engine; it was a disciplined attempt to turn a propulsion vision into an instrumented laboratory question: can spin be made to push?

NASA’s Bismuth Rotor Test at Marshall Space Flight Center

The apparatus did not look like the future of propulsion. It looked improvised, angular, and heavy with laboratory compromise: a rotor assembly, a motor, magnet blocks, a frame, wires held carefully out of the way, and beneath it all a precision OHAUS scale sensitive enough to notice a hundredth of a gram. It was October 7, 2016, at NASA Marshall Space Flight Center’s Propulsion Research Laboratory. Richard Eskridge, Michael A. “Mike” Nelson, and Chris Milam of Quantum Machines were there to watch the device run.

The rotor was made of bismuth, a silvery, brittle metal better known for low-melting alloys and iridescent crystals than for spacecraft engines. In NASA’s experiment, bismuth mattered because its naturally occurring isotope, Bi-209, has a relatively large nuclear spin. The team was not simply weighing a spinning object. They were looking for a force that, in their reformulation of a speculative theory, might arise when angular momentum inside atomic nuclei aligned with the angular motion imposed by Earth’s rotation.

At first the device was run in what the NASA report called anti-spin mode. According to the theory being tested, this should make the apparatus appear lighter. When the motor came on, the scale reading dropped by about 0.3 grams. That was not enough to convince anyone. A spinning motor can heat air, stir air, tug on wires, vibrate a balance, and create a zoo of ordinary artifacts. Then the team disassembled and reconfigured the rotor and magnets for co-spin mode. This time, the device reportedly gained about 0.3 grams.

That reversal gave the moment its power. The observed change was small in everyday terms, but much larger than the tiny weight changes Pope and Osborne had originally calculated for ordinary spinning discs. NASA did not claim that a spaceship engine had been built. It did not even claim proof of a new force. But it did record a preliminary result that appeared to match the sign and scale expected from a theory NASA had reshaped into an engineering hypothesis: the spin-coupled force.

The NASA Marshall Team, Quantum Machines, and the Space Act Agreement

The names on the NASA Technical Memorandum matter because they show that the POAMS work was not just an anonymous paper trail. The report was authored by Richard H. Eskridge, Michael A. Nelson, and Michael P. Schoenfeld of Marshall Space Flight Center, with Eskridge listed as retired. The acknowledgments also credit N. Vivian Pope and Anthony Osborne for the original concepts, Chris Milam of Quantum Machines, LLC, for requesting and funding the effort, and the Marshall propulsion staff who discussed and supported the work.

Eskridge was the central technical figure. He joined Marshall in 1983 and spent more than three decades moving through some of NASA’s more demanding propulsion and test environments: laser propulsion, rocket plume diagnostics, combustion physics, fusion propulsion, electric-gun development, pulsed power, and advanced propulsion studies. He served as Chief Engineer of the MSFC Combustion Physics Laboratory, later became Chief Engineer for Fusion Propulsion Experimentation, built pulsed-power capability at Marshall, and held a patent for the PT-1 plasmoid thruster. Before retiring in 2016, the NASA report says he completed the Pope-Osborne study and derived the spin-coupled force.

Nelson brought a different kind of institutional experience. He joined Marshall in 1982 and worked first in information and data systems supporting Shuttle, Spacelab, Hubble, Chandra, and International Space Station programs. After moving into propulsion systems, he supported Space Shuttle Main Engine health-management systems, the COBRA rocket engine, the RS-83 and RS-84 engines, and Shuttle main-propulsion launch operations. After the Shuttle program ended, he became involved in Space Act Agreements investigating breakthrough-physics phenomena in energy, materials, and non-Newtonian propulsion.

Schoenfeld added nuclear-systems and experimental-development depth. At Marshall, he worked in propulsion and technology development on nuclear systems for power and propulsion, including small space nuclear power systems, nuclear thermal propulsion, liquid-metal heat loops, radiation-effects testing, and hot-hydrogen furnace work. He also researched advanced-propulsion phenomena, including anomalous gravitational effects of electrically pulsed superconductors and POAMS. Quantum Machines supplied the outside spark and funding through a Space Act Agreement signed July 1, 2015, giving the project a formal NASA pathway even as the idea itself remained speculative.

The Pope-Osborne Theory: Replacing Forces With Angular Momentum

The story began far from Huntsville, in a paper by Anthony D. Osborne and N. Vivian Pope titled “An Angular Momentum Synthesis of ‘Gravitational’ and ‘Electrostatic’ Forces.” Osborne was associated with the Department of Mathematics at Keele University, while Pope wrote from Swansea, Wales. Their paper was not conventional in tone or ambition. It did not merely propose a correction to an equation. It challenged the language of force itself, arguing that what physicists call gravitational and electrostatic forces might be better understood as consequences of angular momentum.

Osborne and Pope’s argument started with Newton. In Newton’s first law, inertial motion is rectilinear: an object in motion continues in a straight line unless acted upon by a force. Orbital motion, in that view, needs explanation. The planets curve because gravity pulls them from the straight paths they would otherwise follow. Osborne and Pope inverted the premise. What if free motion was not naturally linear? What if nature, as actually observed from atoms to planets, was fundamentally orbital?

Their framework, which NASA later called the Pope-Osborne Angular Momentum Synthesis theory, or POAMS, treated angular momentum as the deeper common factor behind both gravity-like and electrostatic-like behavior. The authors wrapped that physics in a philosophical system they called “Normal Realism,” drawing on Machian ideas and rejecting what they saw as unnecessary invisible field forces. In their telling, bodies did not need to be pulled through empty space by mysterious fields; their motion could be understood as part of a holistic angular-momentum balance.

The most experimentally provocative part was not the philosophical attack on fields, but the claim that spin mattered. In ordinary Newtonian treatment, a perfectly spherical spinning mass behaves gravitationally like a non-spinning mass. In POAMS, spin angular momentum changes the orbital balance. A spinning body aligned with Earth’s rotation might become slightly heavier; one spinning the opposite way might become slightly lighter. The predicted effects were tiny, but they were measurable in principle, and that was enough to tempt experiment.

What POAMS Predicted for Spinning Discs, Steel Balls, and Weight Change

Osborne and Pope worked through examples that read, in hindsight, like invitations to an experimentalist. A 175-gram disc spinning at 18,000 revolutions per minute near the equator, aligned with Earth’s rotation, would become about one-hundredth of a milligram heavier. Spin it in the opposite sense, and it would become about one-hundredth of a milligram lighter. That is not an antigravity device. It is barely a whisper on a laboratory balance.

They also considered a more aggressive object: a 2.5-kilogram steel ball, five centimeters in radius, spinning at 2,000 revolutions per second. In the theory, that ball would shift by about one-hundredth of a gram between co-spin and anti-spin cases. This was larger, but still a difficult measurement. It also required a demanding mechanical setup: a heavy object spinning very fast, oriented carefully with respect to Earth’s rotation, ideally near the equator.

The geometry mattered. The effect was supposed to arise from the relationship between spin angular momentum and orbital angular momentum. A body sitting on Earth’s surface is already being carried around Earth’s axis once per day. At the equator, that motion is greatest; away from the equator, it is reduced. A careless experiment in the wrong orientation might test only a weak projection of the predicted effect, or miss it altogether.

That point became important because POAMS entered a landscape already haunted by earlier gyroscope-weight claims. Hideo Hayasaka and Sakae Takeuchi had reported an anomalous weight reduction for spinning gyroscopes in 1989, a claim that drew attention and later skepticism. Osborne and Pope did not simply repeat that result. Their own numbers suggested that ordinary spinning bodies should show much smaller, more geometry-dependent effects than the most sensational gyroscope claims implied.

NASA’s Reformulation of POAMS Into a Spin-Coupled Force

Quantum Machines approached NASA Marshall in late 2014 with the idea that POAMS might provide the basis for an advanced propulsion system. The company presented the Osborne-Pope paper and asked NASA to develop experimental methods for validating the theory’s principles. The work was formalized under a Space Act Agreement signed July 1, 2015. The resulting NASA Technical Memorandum would be published in 2021 under the title “A Study of the Pope-Osborne Angular Momentum Synthesis Theory (POAMS) Including a Mathematical Reformulation and Validation Experiment.”

NASA’s first important move was not experimental. It was conceptual. Pope and Osborne had written as though the effective gravitational constant, G, could differ for spinning objects in different angular-momentum relationships. NASA rejected that interpretation. In the NASA reformulation, ordinary G stayed fixed. The extra POAMS term became a new non-Newtonian correction force: the spin-coupled force, or SCF.

That mattered because engineers test forces. The NASA report notes that there are no “angular momentum meters” in a laboratory. There are clocks, rulers, and force scales. By collecting the Newtonian terms on one side and treating the leftover spin-dependent term as a measurable correction, NASA turned a philosophical theory of orbital motion into a practical experimental target. The new force could be calculated, assigned a direction, and compared against a scale or load cell.

NASA also generalized the idea. The spin-coupled force did not have to apply only to gravity. If the theory were meaningful, it could apply to any body-centered force system, including a mass constrained to move in a circular path by a rigid arm. That opened a path to bench-top experiments. Instead of waiting for Earth’s slow rotation to produce a minuscule weight change, NASA could build a laboratory orbit with a short radius and high speed.

Why Ordinary Spinning Objects Were Too Weak or Dangerous to Test

Before building the strange bismuth rotor, NASA tried to imagine a direct test with classical spinning matter. The problem was immediately discouraging. Ordinary spinning objects on Earth were predicted to change weight by less than one part in one hundred million at realistic spin rates. A laboratory scale could, in principle, see small changes, but a dynamic spinning apparatus introduces heat, vibration, air movement, electromagnetic forces, and mechanical drift. The signal would be buried before it had a chance to speak.

The team then considered the fastest-spinning objects it could find. One example was vaterite microspheres, tiny calcium carbonate particles trapped and spun by polarized laser light. These could rotate at astonishing speeds, in the megahertz range. But the very thing that made them spin so fast—their microscopic size—made them useless as practical test masses. In NASA’s calculation, even a five-megahertz vaterite sphere produced a weight-change factor still too small to make a feasible validation experiment.

Spinning plasmas looked more promising only until the energy numbers arrived. To produce even a one-part-in-ten-thousand weight change, the plasma would need a molecular stagnation temperature of about 10,000 electronvolts, equivalent to roughly 100 million kelvin. At that point, the experiment had stopped being a simple POAMS test and become a fusion-class engineering problem. If NASA already had such a controlled plasma system sitting around, propulsion research would be having a very different conversation.

The last classical option was a rotating flow of liquid mercury in a torus. Mercury is dense, and a circulating liquid metal loop could, in principle, carry substantial angular momentum. But the NASA calculation for a one-part-in-ten-thousand change required kinetic energy equivalent to about 18 kilograms of TNT. That made the concept less like a validation experiment and more like a hazardous apparatus waiting to fail. By the end of the exercise, classical spinning masses looked like a dead end.

NASA’s Orbiting-Gyroscope Experiments and Unusable Centripetal-Force Data

The first experimental path NASA actually built was an orbiting gyroscope. It was a clever idea. A small gyroscope would be mounted on a rotating arm and carried around a central axis at a radius of about 20.3 centimeters, or eight inches. Instead of relying on Earth’s slow daily rotation, the apparatus would impose a laboratory orbit at up to about 10 hertz. The gyroscope’s spin would then be set in co-spin or anti-spin relative to that orbit.

The predicted effect was not tiny. NASA calculated that a hobby gyroscope with a 0.112-kilogram brass rotor and total mass of 0.145 kilograms could show significant changes in centripetal force. At a 10-hertz orbital rate and a 60-hertz gyro spin rate, the calculated co-spin force would be about 15 percent lower than the zero-spin case, while the anti-spin force would be about 19 percent higher. This was the kind of signal a lab instrument should be able to see.

The first device, called V1, was built from a modified educational centripetal-force apparatus. It had an adjustable radius, a load cell, a rotational speed sensor, and an optical sensor to track gyroscope spin. But the gyroscope was initially spun up by a detachable motor and then left to rotate freely. When the arm began to orbit, bearing friction quickly dragged the gyro down. The experiment produced deviations, but the changing spin rate made the data unusable.

NASA then built V2 with better hardware: a stronger arm, a larger 200-newton load cell, a commercial bearing, a permanently attached motor to keep the gyroscope spinning, and a Lexan safety shield because the apparatus could run beyond 10 hertz. But the same essential problem remained. Bearing friction in the gyro and drive motor made the spin rate unsteady as soon as orbital motion began. The equations NASA had derived were quasistatic; they assumed constant radius, constant orbital speed, and constant spin. V2 could not hold those conditions, and NASA concluded that the data were not useful.

Mechanical Spin, Orbital Motion, and Nuclear Spin: Three Meanings of Angular Momentum

To follow the rest of the story, “spin” has to be separated into three meanings. The first is ordinary mechanical spin: a disc, sphere, rotor, or gyroscope turning around an axis. This is the spin of flywheels and gyros, described by moment of inertia, angular velocity, kinetic energy, and angular momentum. Osborne and Pope’s original macroscopic examples lived mostly in this world.

The second is orbital motion, which is not spin in the everyday sense but still carries angular momentum. A mass on Earth’s surface is carried around Earth’s axis once per day. A gyroscope on NASA’s rotating arm is carried around a laboratory axis many times per second. POAMS was interested in the coupling between these kinds of angular momentum: the spin of a body and the orbital motion of that same body around some center.

The third is quantum or nucleonic spin. Atomic nuclei have intrinsic angular momentum, but it is not simply a tiny sphere rotating like a wheel. NASA’s report acknowledged the conceptual difficulty of treating nuclear spin in classical terms, even noting that a naïve surface-speed calculation for a nucleus could exceed the speed of light. Yet quantum angular momentum can be tied to macroscopic mechanical effects. The Einstein-de Haas and Barnett effects showed that magnetization and mechanical rotation can be linked through angular momentum.

This distinction made the bismuth experiment radically different from the gyroscope experiment. In the gyroscope test, NASA tried to measure the effect of a visible spinning rotor moving in a forced orbit. In the bismuth test, the visible rotor existed partly to induce alignment inside the material. The hypothesized source of the spin-coupled force was not merely the rotor’s mechanical spin, but the aligned angular momentum of Bi-209 nuclei carried around Earth’s axis by the planet itself.

NASA’s Extension of POAMS to Aligned Atomic Nuclei

The nuclear-spin idea was NASA’s most consequential extension of POAMS. Pope and Osborne had not treated the case of aligned atomic nuclei on Earth’s surface. NASA did. Every atom in a laboratory is already in circular motion because Earth rotates. If the spin-coupled-force equation could be applied at the nuclear scale, then aligned nuclei might experience forces far larger, relative to their own weight, than an ordinary spinning macroscopic body.

The appeal was obvious. A mechanical gyroscope spins down. A nucleus does not. A rotor bearing heats, drags, vibrates, and wobbles. Intrinsic nuclear angular momentum is stable in the sense relevant to the proposed experiment. In ordinary matter, nuclear spins point in many directions and any spin-coupled forces would cancel. But if a material could be made to contain a net population of aligned nuclear spins, NASA reasoned, a bulk force might emerge from what is normally hidden.

Bismuth-209 became the model nucleus. It has nuclear spin 9/2, is the only naturally occurring isotope of bismuth, and occurs at effectively 100 percent abundance in natural bismuth. For ordinary purposes it is effectively stable, but it should not be described as strictly stable: modern measurements show that Bi-209 undergoes alpha decay with an extraordinarily long half-life of about 2.01 × 10^19 years. NASA also favored bismuth because it is workable, relatively low in toxicity compared with many heavy metals, has a low melting point, and has low electrical conductivity.

The calculation was startling. At Huntsville’s latitude, about 34.5 degrees north, NASA estimated that a single aligned Bi-209 nucleus would experience an apparent-weight increase by a factor of 2.69 in co-spin, or an upward anti-spin force about 2.29 times its weight. The caveat was everything: this applied to an aligned nucleus, not to a lump of ordinary bismuth. In bulk matter, the effect would depend on the tiny fraction of nuclei that could actually be aligned.

The Nuclear-Alignment Basis for the Bismuth Rotor Experiment

NASA’s bismuth rotor sat at the intersection of several older ideas. Samuel Barnett had shown in 1915 that mechanical rotation could magnetize a body, the inverse counterpart to Einstein-de Haas, where magnetization produces mechanical rotation. Albert Overhauser had predicted nuclear polarization in metals, a way for electron alignment to transfer to nuclei. Henry Wallace, in a 1971 patent, had claimed that spinning materials with nuclear spin could generate a secondary gravitational or kinemassic field.

NASA did not adopt Wallace’s field theory as POAMS. The Technical Memorandum explicitly says that the existence of such a field was not part of POAMS and was not considered in that way. But the experimental concept borrowed the alignment strategy. A cast bismuth disc would spin at high speed in a magnetic field. The Barnett-like self-magnetization, the Overhauser-like transfer of alignment, and the Wallace-inspired spinning-disc geometry were arranged to push in the same direction.

The V3 device was placed on a scale to measure only the vertical component of the predicted spin-coupled force. Its main axis was aligned parallel to Earth’s rotational axis for maximum effect. In co-spin mode, the rotor turned in the same sense as Earth’s rotation, with the magnetic polarity chosen so that nuclear spin aligned in the same sense. In anti-spin mode, the rotor and magnetic polarity were reversed.

The annotated NASA image of V3 is almost disarmingly plain: spin axis, upper magnet assembly, bismuth rotor in an aluminum shell, lower magnet assembly, motor, and scale. Nothing in the photograph looks like a starship drive. That is part of the fascination. The claim was not that the device was advanced hardware. The claim was that the right kind of aligned angular momentum, even in a modest benchtop assembly, might show up as a weight change.

The Reported 0.3-Gram Weight Changes in Co-Spin and Anti-Spin Tests

On the day of the V3 test, the apparatus was run first in anti-spin. The scale dropped by about 0.3 grams. The team did not treat that alone as extraordinary. Weight loss from a running device is easy to fake accidentally. Warm air rises. Motors push air. Wires tug. Bearings heat. Magnetic assemblies can interact with nearby metal. A good experimentalist distrusts the first attractive result.

Then came the reversal. The rotor and magnet assemblies were flipped so the system could run in co-spin. When the motor ran, the device reportedly gained about 0.3 grams. That made the observation harder to dismiss as a simple buoyancy or aerodynamic effect, because the sign had reversed with the theoretical configuration. The rotor contained about 211 grams of bismuth, so the apparent change corresponded to roughly 0.14 percent of the rotor’s weight.

NASA also noted a detail about the motor. The V3 used a multiphase motor of the kind used in electric gyrocopters, with direction controlled by relative phasing of pulsed DC signals rather than by a simple reversal of DC current. That mattered because a trivial current-reversal artifact would have been an obvious suspect. The motor design did not eliminate all possible electrical or magnetic artifacts, but it made one simplistic explanation less compelling.

The result was not cleanly repeatable in the way a discovery must be. NASA reported that the effect diminished each time the device was tested and eventually disappeared. The external magnetic field of the magnets reportedly did not change. When a new device was assembled with new rare-earth magnets, the effect returned. The team later suspected an unidentified phenomenon in the magnets. That sentence should sit near the center of any honest account of POAMS: the result was intriguing, but its own history made it unstable.

Later Bismuth Rotor Versions, Quantum Machines, and the Missing V5 Data

V4 was built to make the experiment easier and cleaner. It used a stainless-steel SS304 machined outer shell, replacing the earlier aluminum shell and reducing magnetohydrodynamic heating effects. It incorporated onboard battery power and radio-linked remote control, allowing wireless operation and reducing some cable-related concerns. It was also easier to switch between co-spin and anti-spin without the disassembly that had complicated V3.

The V4 rotor was made by casting bismuth into the stainless-steel shell and then machining it. In NASA’s images, it looks more like a specialized precision part than the rougher V3 assembly. This was not yet a decisive instrument, but it showed the experiment was evolving from a quick exploratory rig toward a more controlled device. The design changes were responses to real measurement concerns: heat, wiring, configuration changes, and repeatability.

After the first successful tests, according to the NASA report, experimental work moved out of NASA and into Quantum Machines facilities. NASA Marshall helped Quantum Machines build a V5 device with improved framing, a new magnet cage assembly, better bearings, instrumented motors, and a data acquisition system. The report says successful tests producing high-quality data were conducted with V5 at Quantum Machines.

But that is where the public trail narrows. NASA states that the V5 data and the V5 device remained in Quantum Machines’ possession. No further work was conducted at NASA Marshall after construction and initial tests of V5 because Quantum Machines did not provide additional Space Act funding. At the time the NASA memo was written, the proprietary period had ended, and NASA could continue the research if desired. For a journalist, that is not an ending. It is a reporting assignment.

Experimental Artifacts, Magnet Effects, and the Challenge of Repeatability

The bismuth result is dramatic because it is small. A 0.3-gram change is large enough to register clearly on a good scale, but small enough to be impersonated by ordinary effects in a running device. Heat can alter buoyancy. Airflow can lift or press. Vibration can fool a balance. Magnetic assemblies can couple to nearby structures. Wires can flex. Bearings can change load. A rotating mass can produce subtle inertial artifacts.

NASA’s own report recognized the danger. The initial anti-spin weight loss did not excite the team because thermal buoyancy or aerodynamic forces could explain it. Only the later co-spin gain seemed remarkable. That is the right experimental instinct. A single observed drop is a curiosity. A sign reversal tied to a physical configuration is more interesting. But even a sign reversal is not enough when the apparatus itself is being disassembled, flipped, rewired, and rerun.

The magnet behavior is especially important. The effect faded with repeated tests, disappeared, and then returned with new rare-earth magnets. That could point to some unknown alignment process, some fatigue-like magnetic condition, or some mundane artifact that changed as the hardware aged. Without raw data, independent magnetic characterization, thermal records, blind trials, and replication, the magnet mystery remains an ambiguity rather than evidence.

The gyroscope program had already shown how hard these measurements were. In V1 and V2, deviations appeared, but unstable spin rates made interpretation impossible. The same lesson applies to V3 and V4. A force predicted by a speculative theory cannot be established merely because an apparatus behaves strangely. It must survive every ordinary explanation a skeptical experimentalist can throw at it.

Controls and Replication Needed to Confirm a Spin-Coupled Force

A decisive follow-up would begin with controls. A bismuth rotor should be compared with sham rotors, non-bismuth rotors of similar mass and inertia, low-nuclear-spin or non-spin-active materials, inactive magnet assemblies, and configurations that look operational but do not satisfy the theory’s alignment condition. Operators and analysts should not know which configuration is expected to gain or lose weight until after the data are locked.

The environment would need to be controlled more aggressively than in an exploratory bench test. A vacuum chamber would reduce aerodynamic and buoyancy effects. Thermal sensors should track the motor, rotor, magnets, frame, air, and scale. Vibration isolation should be documented. Cable loads should be eliminated or held constant. Magnetic fields should be mapped before and after each run. The scale should be independently calibrated, and a second measurement method should monitor the same event.

The nuclear-alignment claim also needs direct evidence. It would not be enough to infer aligned nuclei from weight change. A stronger experiment would independently characterize nuclear polarization or a related magnetic signature, then test whether the apparent force scales with the degree of alignment. If the force grows with alignment fraction, changes sign with spin geometry, and disappears in non-spin-active controls, the case becomes far stronger.

A propulsion-relevant test would need to go beyond weight. Apparent weight change on a scale is not the same as free-space thrust from a closed system. A torsion balance, thrust stand, or suspended test article would be needed to determine whether the device produces a real external force rather than a reaction against its support or environment. Only then could the discussion move from “possible anomalous force” toward “candidate propulsion physics.”

From Apparent Weight Change to Propellantless Propulsion: The Missing Steps

The NASA report’s propulsion motivation was real. Quantum Machines approached NASA because it believed POAMS might support an advanced propulsion system, and the report documentation included terms such as propellantless propulsion, breakthrough physics propulsion, field propulsion, and fifth force. But those labels describe the research aspiration, not a demonstrated capability. The experiments did not show a spacecraft drive.

The theoretical path to propulsion would require controllable force generation. If aligned nuclear spin in a material could produce a radial spin-coupled force, then a device might in principle change apparent weight, increase apparent weight, or perhaps achieve levitation. NASA said as much in cautious form. But the same passage also identified the central bottleneck: ordinary materials cancel because their nuclear spins are randomly oriented, and useful technology would require much better methods for inducing nuclear alignment.

Even then, lift is not the same as thrust. A device that appears lighter on Earth may be interacting with Earth’s rotation, Earth’s gravitational field, the laboratory support structure, or the measurement apparatus. A spacecraft drive must produce controlled momentum exchange or a force that remains meaningful without a scale underneath it. The difference is not semantic. Many propulsion claims fail precisely at the boundary between a weight anomaly and a self-contained thrust source.

The most responsible way to describe the propulsion implication is conditional. If the spin-coupled force exists, if it can be amplified through nuclear alignment, if it can be controlled, if it produces force independent of ordinary artifacts, and if that force can be directed in a closed flight system, then it could become relevant to propulsion. NASA’s public record gets only to the first steps of that chain. The rest remains unproven.

The Hayasaka Gyroscope Controversy and the Problem of Non-Replication

The POAMS story cannot be separated from the earlier gyroscope controversy. Hayasaka and Takeuchi’s 1989 claim of anomalous weight reduction on spinning gyroscopes became a touchstone for those interested in rotation, gravity, and possible parity effects. The claim was dramatic: one direction of spin supposedly produced weight reduction, while the opposite direction did not. It was also exactly the kind of result that demanded replication.

Replication did not treat it kindly. Follow-up work, including Quinn and Picard’s weighing of spinning rotors, found no robust dependence of weight on speed or sense of rotation at the reported level. Other null-result studies further weakened the original claim. This history matters because it shows how treacherous spinning-weight measurements can be. Gyroscopes are not simple masses; they are motors, bearings, rotors, thermal sources, and vibration machines.

Osborne and Pope’s position was not identical to Hayasaka’s. Their own calculations suggested much smaller effects and stricter geometry, ideally near the equator with spin carefully aligned or anti-aligned to Earth’s rotation. They even noted that the Hayasaka configuration was not ideal for the effect their theory predicted. That distinction gives POAMS a more specific testable structure, but it does not erase the broader lesson of non-replication.

NASA’s own gyroscope tests reinforced that lesson. When the predicted effects were large enough to measure, the apparatus could not maintain stable conditions. When the bismuth rotor produced intriguing apparent weight changes, the effect faded and became magnet-dependent. The shadow over the entire field is not that anomalous rotation effects are impossible. It is that spinning machinery is exceptionally good at manufacturing false mysteries.

Richard Eskridge’s Propulsion Patents and Their Relationship to POAMS

The public patent trail shows another side of Eskridge’s propulsion work. Long before the POAMS memo appeared, he was involved in the PT-1 plasmoid thruster, an advanced electric propulsion concept that pushed plasma structures rather than relying on conventional chemical exhaust. This matters because it places the POAMS work in the orbit of someone who had already spent years in advanced propulsion hardware, pulsed power, and unconventional propulsion-related experiments.

His clearest public patent trail points not to POAMS, but to plasmoid propulsion. US7808353B1, “Coil system for plasmoid thruster,” lists Richard H. Eskridge, Michael H. Lee, Adam K. Martin, and Peter J. Fimognari as inventors. It was filed in 2006, granted in 2010, and originally assigned to NASA. The invention concerns bias, drive, and field coils wound around a conical region to form and expel plasmoids.

That technology is exotic by everyday standards but conventional in its momentum logic. A plasmoid thruster produces thrust by expelling plasma structures at high velocity. NASA’s related tech brief described the PT-1 concept as electrodeless, capable of using in-situ resources, and potentially capable of high specific impulse. It is advanced electric propulsion, not propellantless POAMS propulsion.

I found no public Eskridge patent explicitly covering POAMS, spin-coupled force, bismuth rotors, nucleonic alignment, gravity modification, or a POAMS-derived propulsion system. That does not prove no private, unpublished, assigned, abandoned, or differently named intellectual-property trail exists. It does mean the visible public patent record separates Eskridge’s established propulsion patent from the speculative spin-coupled-force research.

What NASA’s POAMS Work Did—and Did Not—Demonstrate

The most tempting version of this story is the simplest one: NASA tested an antigravity device and saw it work. That version is not supported by the record. NASA tested a speculative reformulation of POAMS, built experiments, failed to get useful gyroscope data, reported preliminary bismuth-rotor observations, and concluded that additional research with careful measurements was required. The difference matters.

The second tempting version is also too simple: NASA wasted time on nonsense. That misses the more interesting reality of experimental science at the edge. Engineers sometimes test ideas they do not yet trust because a calculation suggests a measurable consequence. Most such ideas fail. Some fail because the theory is wrong. Some fail because the apparatus is not good enough. A few open doors nobody expected. The only way to know is to make the measurement merciless.

The POAMS memo is therefore best read as a boundary document. It is not a peer-reviewed revolution. It is not a propulsion breakthrough. It is a record of a NASA Marshall effort to translate an obscure angular-momentum theory into force equations and laboratory tests. Its value lies partly in what it says happened, and partly in what it admits did not happen: no usable gyroscope result, no public V5 data, no definitive proof, no completed propulsion demonstration.

What remains is the image of the scale. A bismuth rotor spins between magnets. The number changes. The number changes back. The effect fades. New magnets revive it. A theory waits nearby, offering an explanation. So do heat, air, vibration, magnetism, wiring, and chance. Between a signal and a discovery lies the hardest part of physics: making the world answer the same question twice.