US Navy Patent Comparison
A Chinese farmer and the US Pentagon, independently exploring the same physical phenomenon. They use different terminology to describe similar physical mechanisms.
Three Related Patents
The following three patents, from the US Navy and Zhang Xiangqian respectively, point in the same direction from different angles — the connection between electromagnetic fields and gravity:
| Patent No. | Applicant | Title |
|---|---|---|
| US10144532B2 | Salvatore Pais / US Navy | Craft Using an Inertial Mass Reduction Device |
| US10322827 | Salvatore Pais / US Navy | Electromagnetic Field Generator and Method to Generate High Frequency Gravitational Waves |
| US12417870 | Zhang Xiangqian | Experimental Apparatus and Method for Generating Gravitational Fields via Varying Electromagnetic Fields |
Dr. Pais is an engineer at the Naval Air Warfare Center Aircraft Division (NAWCAD). The core idea of all three patents is that manipulating electromagnetic fields in specific ways can affect an object's inertial mass and even produce gravitational effects. Zhang Xiangqian's patent provides a concrete experimental apparatus and method, while Pais's patents focus more on theoretical frameworks and device concepts.
Terminology Comparison
The two use entirely different terminologies, yet describe similar physical phenomena:
| Concept | Zhang Xiangqian's Description | Pais Patent Description |
|---|---|---|
| Core Mechanism | Varying electromagnetic fields generate gravitational fields | High-frequency EM oscillations produce local spacetime curvature corrections |
| Mass Effect | Mass = number of spatial displacement lines, alterable via EM fields | Inertial Mass Reduction |
| Gravity Control | Artificial field scanning, producing artificial gravitational fields | High-frequency gravitational wave generator |
| Theoretical Framework | Helical motion of space, unification of four forces | Polarized vacuum state correction, quantum vacuum plasma |
| Application Direction | Flying saucer flight principles, light-speed craft | Hybrid aerospace-undersea craft |
| Energy Source | Accelerating electromagnetic field variations | High-frequency rotating electromagnetic fields |
Key Similarities
Electromagnetic Manipulation of Gravity
Both propose that gravity effects can be produced by manipulating electromagnetic fields in specific ways. This remains unresolved in mainstream physics.
Variable Mass
Both hold that an object's inertial mass is not fixed and can be altered through electromagnetic means.
High-Frequency Variation Is Key
Both emphasize that rapid changes (high frequency) of the electromagnetic field are critical to producing the effect.
Propulsion Technology Applications
Both connect this effect to novel propulsion technologies — one refers to flying saucers, the other to hybrid craft.
Key Differences
| Dimension | Zhang Xiangqian | US Navy / Pais |
|---|---|---|
| Background | Farmer from Anhui, self-taught in physics for 40 years | NAWCAD engineer, PhD |
| Theory Completeness | Complete unified field theory system, derived from first principles | Theory in patent descriptions is relatively fragmented |
| Experimental Verification | Personal experimental reports exist (not independently verified) | Patents claim feasibility, but no public experimental data |
| Equipment Complexity | Simple equipment, budget approximately $300-500 USD | Patents describe complex, sophisticated equipment |
| Reproducibility | Low barrier, any ordinary lab can attempt | High barrier, requires specialized facilities |
| Academic Recognition | Not recognized by the academic community | Patents granted, but still debated in academia |
Questions Worth Pondering
Regardless of one's stance on Zhang Xiangqian's theory or Pais's patents, the following facts deserve attention:
- Independent Convergence: A Chinese farmer and the US Navy, working completely independently, arrived at the similar conclusion that 'varying electromagnetic fields can affect gravity.' This independent convergence is noteworthy in itself.
- The US Navy's Stance: The US Navy invested resources in these patents and obtained their approval. In 2019, Navy Chief Technology Officer James Sheehy personally wrote to the patent office attesting that 'these inventions are workable.' Whatever the final conclusion, this shows the US military took this direction seriously.
- Low-Cost Verification Opportunity: Unlike Pais's patents which require expensive equipment, Zhang Xiangqian's approach offers a low-cost verification path. If the effect exists, this could be one of the highest return-on-investment experiments in human history.
Three Independent Lines of Evidence Converging
In the direction of "electromagnetic-gravitational field conversion," at least three independent lines of evidence are converging:
1. Zhang Xiangqian
Based on knowledge from an alien civilization, proposed the unified field theory. In 2023, experimentally observed changing electromagnetic fields producing gravitational field effects. US Patent US12417870.
2. US Navy Dr. Pais
Based on general relativity derivations, filed patents for inertial mass reduction device and gravitational wave generator (US10144532B2, US10322827). The Navy's Chief Technology Officer personally vouched for feasibility.
3. 2021 Brookhaven Experiment
Directly observed photon-photon collisions producing electrons (Breit-Wheeler process) in heavy-ion collisions. Further confirmed in 2026 that the produced matter originates from quantum vacuum fluctuations and retains 100% spin correlation.
Three lines of evidence from completely different sources, all pointing in the same direction: there exists a controllable conversion relationship between electromagnetic and gravitational fields, and space itself has a material structure that can be activated.
Disclaimer: This comparison is based on publicly available patent documents and Zhang Xiangqian's public materials. Both theories and experiments are controversial and have not been recognized by mainstream academia. This site presents comparative information and does not make judgments on the correctness of either side.