Published the original thermoacoustic pyramid concept in 2016.  Discovered the volume of the Great Pyramid equals the volume of all other pyramids at Giza.

A Testable Machine Model for Water Lifting and Ultrasonic Atomization

Danny Kerr (TeslaPyramids) — Current State of Research, October 2026

Abstract

This paper presents the TRP (Thermoacoustic Regenerative Pulsejet) model of the Giza pyramids as engineered water pumps. Their primary function is lifting water from the aquifer beneath the plateau. The steam-flash thermoacoustic cycle pumps water upward via resonant columns and water-hammer action. Once lifted, Aswan granite is used for its ultrasonic surface effect to atomize the pumped water into mist. Electrolysis/sonolysis are secondary byproducts the design handles readily. The model integrates measured geometry, material properties, Biondi SAR remote-sensing data, and Egyptological context. Key quantitative elements include a ~738 m water column under Khafre resonating at ~1.003 Hz (matching Bellocq’s 1929 compression-wave pump), structural modes near 13 Hz, King’s Chamber axial beats near 5 Hz, and ultrasonic generation from the granite matrix (quartz typically 20–40 %). The full upper system (Queen’s Chamber path + Grand Gallery + antechamber + King’s Chamber) resonates near 1.14 Hz in steam, matching the 648 m SAR tubes. The water-filled Descending Passage feeding a subterranean chamber with an air pocket above the entrance produces a coupled mode near 1 Hz. The tubes under the pyramids form a coupled array of water-column resonators, tuned site-wide near 1 Hz. The pyramids act as the surface drivers and primary pumps for this network, modulating at approximately 1 Hz to drive the water-column resonance. The pyramidal geometry and interlocking masonry provide earthquake resistance, further enabling powerful low-frequency vibrations. G2 is modeled as driven by five King’s Chamber analogs positioned above eight SAR tubes. G1 generates atomization via pipes webbed outward from around the King’s Chamber (horizontal ultrasonic transport); G2 and G3 atomize water in their moats. Smooth casing collects and funnels water into the moats; temples and causeways manage further atomization and recycling. Resulting mist plumes are predicted to resemble Niagara Falls-scale plumes. The water source is the aquifer beneath the plateau; Lake Moeris, even at maximum fill, is lower than all the pyramids of Egypt except the Black Pyramid. The model is falsifiable and prioritizes the water-pumping function.

1. Introduction: Machines First, Tombs Second

Mainstream Egyptology classifies the Giza pyramids primarily as tombs on the basis of a granite sarcophagus, sealing plugs, and later historical records. This framework, developed from 2016 onward and documented primarily on https://t.co/1TjA3fpRTH and Facebook (with later posts on X @TeslaPyramids), inverts that priority. Geometries, material zoning (Aswan granite, basalt, Tura limestone), salt encrustations, scorch patterns, subsurface SAR features, and water-management infrastructure are evaluated first as functional components of a water-pumping steam-flash thermoacoustic network, with the tomb interpretation treated as secondary. The main purpose is pumping water; Aswan granite is specifically utilized for its ultrasonic surface effect to atomize the lifted water. This is consistent with the pharaoh’s documented role as maintainer of maat and bringer of the Nile flood (Hapi) and rain.

Ancient Egyptian mythology aligns with this function. In the myth of the sibling pair Shu (dry air/dryness) and Tefnut (moisture), Tefnut departs to the south (Nubia/the southern desert). Moisture leaves the land and dryness takes over. Shu (or Thoth in some versions) then retrieves her from the south; moisture returns and fertility and order are restored. In this framework the pyramids function as the literal manifestation of the gods and their effects: the physical machines that lift moisture from the aquifer, atomize it, and return it as mist to reverse the dryness. The pharaoh’s role as maintainer of maat and bringer of water is thereby embodied in the architecture itself rather than remaining purely symbolic.

The Great Pyramid’s ancient name was Akhet Khufu (“Horizon of Khufu”), attested in the contemporary Wadi al-Jarf papyri (Diary of Merer). Those same records refer to the associated water feature as She Akhet-Khufu (“the pool of the pyramid Horizon of Khufu”) and Ro-She Khufu (“the entrance to the pool of Khufu”). The name therefore links the monument directly to a managed body of water. The machine model supplies a physical mechanism for the retrieval of moisture: water is lifted from the aquifer through the site-wide network of water-column resonators, atomized into mist by the granite ultrasonic surfaces and moat systems, and returned to the landscape.

In Egyptian cosmology the earth is Geb, the male earth god, frequently depicted reclining with an erect phallus directed toward Nut (the sky). Vegetation and fertility emerge from his body; he is associated with the fresh waters that sustain the land. Unlike traditions in which moisture falls from the sky as rain, Egyptian thought understood the life-giving waters as rising from the earth itself. The pyramids, by lifting water from the aquifer and returning it as mist, enact the physical counterpart of this generative process: moisture is brought forth from the ground to restore fertility.

2. Geometry, Resonances, and Resonant Macrosonic Synthesis

The volume of the Great Pyramid (~2.6 × 10^6 m³) approximately equals the combined volume of the remaining Giza pyramids, supporting coordinated design.

Base side of Khufu is 230.4 m. Longitudinal wave speed in limestone/granite is taken as 6,000 m/s. The fundamental base-transverse mode is:
f = c / (2L) = 6000 / 460.8 ≈ 13.02 Hz.  

Higher structural modes fall in the 4–20 Hz band.

King’s Chamber (Petrie-derived): approximately 10.47 m × 5.23 m × 5.85 m. In steam (c ≈ 500 m/s) length mode ≈ 23.9 Hz; width and height modes yield 42.7–47.7 Hz with natural ~5 Hz beats.

The full upper system comprising the horizontal passage to the Queen’s Chamber (~38.8 m), Queen’s Chamber (~5.75 m), Grand Gallery (~46–47 m), antechamber (~2.9 m), and King’s Chamber (~10.47 m) yields a combined effective length of approximately 104 m. In steam (c ≈ 500 m/s)—possible only in the upper chambers—this path supports a quarter-wave resonance near 1.20 Hz.
With modest adjustments for exact path length or steam temperature the value locks to ≈ 1.14 Hz. The Queen’s Chamber and the lower end of the upper system provide cooling, establishing the temperature gradient required for the thermoacoustic cycle. The Descending Passage (~105 m) is full of water and supports a half-wave resonance near 7.05 Hz and a quarter-wave near 3.52 Hz (c = 1,480 m/s). The 648 m SAR tubes in water support a half-wave resonance at ≈ 1.142 Hz. The upper-chamber steam mode (~1.14–1.20 Hz) matches the 648 m tube half-wave, reinforcing direct acoustic coupling between the steam-filled upper system and the water-filled deep tubes. The architecture is consistent with operation locked to this ~1.14 Hz band. Grand Gallery corbelling and varying block sizes implement Resonant Macrosonic Synthesis (Tim Lucas), detuning pure harmonics to sustain high-amplitude standing waves without shock formation—ideal for thermoacoustic conversion.

Aswan red granite used in the King’s Chamber and related structures contains typically 20–40 % quartz by volume (literature range; alkali feldspar dominates at ~35–40 %, plagioclase ~15–25 %). This is sufficient for piezoelectric transduction and surface ultrasonic generation within the granite matrix without requiring the higher percentages previously assumed. The average resonant modes of the quartz crystals embedded in the granite (typically in the 100 kHz–few MHz range for millimeter-scale grains) generate electromagnetic wavelengths that match the physical dimensions of the chamber, the radiating pipe network, and the ultrasonic atomization frequencies. The crystal sizes in the granite also produce EM modes that match the pyramid. This dimensional match indicates efficient electromechanical coupling between the thermoacoustic steam modes in the upper chambers and the granite transducers, allowing the acoustic energy to drive surface ultrasound directly. Laboratory studies on granite (Friedman et al. on residual strain, fabric, and ultrasonic velocity/attenuation; related work on piezoelectric response under dynamic loading) demonstrate that the material supports measurable ultrasonic wave propagation and residual stresses, consistent with its utilization here as an ultrasonic transducer array.

3. Hydraulic Drive: SAR Columns, Bellocq Match, and G2 Architecture

Biondi SAR data indicate eight vertical shafts approximately 648 m deep under Khafre, terminating in large cubic chambers and yielding a total fluid column of ~738 m. Sound speed in water at 20 °C is 1,480 m/s. Half-wave resonance:
f = 1480 / (2 × 738) ≈ 1.003 Hz.

This matches the cycle preferred by Toribio Bellocq’s 1929 compression-wave pump patent, which lifts water from extreme depths using only a surface driver and bottom check valve. Kerr independently recovered the same length–cycle relationship from the SAR geometry. Diagrams posted on X illustrate the central water column, side intakes, and mist plume. G2 is internally driven by five King’s Chamber analogs positioned above the eight SAR tubes, providing distributed acoustic drivers. The deep vertical SAR tubes are uniquely explained by this model and by no other: their ~648–738 m lengths produce half-wave water resonances near 1 Hz that couple directly to the upper-chamber steam modes and the measured structural resonance band. Tomb-only, pure ritual, or alternative power-plant interpretations provide no functional account of these specific dimensions or the frequency match. Giza sits on a regional aquifer (Quaternary alluvium and fractured carbonate aquifers, with water-table elevations documented in multiple geophysical surveys), supplying the continuous water source required for the pumping cycle. Lake Moeris, even when maximally filled, is lower than all the pyramids of Egypt except the Black Pyramid; therefore the primary water source is the aquifer beneath the plateau rather than surface lakes.

The tubes under the pyramids form a coupled array of water-column resonators. The SAR-detected vertical columns (648 m and the associated ~738 m fluid paths), together with the water-filled Descending Passage and the sub-chamber air-pocket system, are dimensioned so that the plateau is tuned site-wide to the ~1 Hz band. This creates a coherent hydraulic resonator across the complex rather than isolated chambers. The pyramids act as the surface drivers and primary pumps for this network, modulating at approximately 1 Hz to drive the water-column resonance. The tubes are water-filled and driven for hydraulic pumping; their length-determined resonant-column physics (quarter-wave and half-wave modes set by tube length and sound speed in water) locks the network into the same operating band. The Descending Passage (~105 m) is water-filled and feeds the subterranean chamber. The chamber retains a pocket of air above the entrance. This air pocket acts as a compressible spring coupled to the water column. With a swinging slamming block at the entrance acting as a periodic driver, the system produces a coupled mode in the ~0.9–1.3 Hz range (Helmholtz-like treatment of the air pocket as spring and the descending passage as neck). This remains aligned with the SAR tube half-wave (1.142 Hz) and the upper-chamber steam mode (~1.14 Hz), locking the lower assembly into the same operating band as the rest of the network.

The thousands of deep shafts located around the pyramids serve to catch and recycle condensed or runoff water back into the network, and their varying depths and diameters provide a means of detuning pure resonances (consistent with Resonant Macrosonic Synthesis principles) to sustain high-amplitude operation without shock formation. They allow the machines to draw moisture from the ground, recycle it, and distribute it, consistent with the primary pumping function and the mythological framing of the earth being opened to release water.

G2’s known passages appear configured for pumping mist. The granite coffer and the granite-lined upper exiting shaft are particularly indicative of ultrasonic atomization and mist handling. Acoustic modes for the G2 granite-lined upper shaft treated as ~100 m to the air interface: water half-wave 7.4 Hz, quarter-wave 3.7 Hz; steam half-wave 2.5 Hz, quarter-wave 1.25 Hz. With an air pocket acting as a spring, the lowest mode couples into the ~0.7–1.3 Hz range, locking to the site-wide ~1 Hz network.

Menkaure’s known passages are shorter. Using an approximate 50 m water path to the air interface: water half-wave 14.8 Hz, quarter-wave 7.4 Hz; steam half-wave 5.0 Hz, quarter-wave 2.5 Hz. Air-pocket coupling still allows locking into the site-wide ~1 Hz network, consistent with moat atomization.

4. Thermoacoustic Cycle: Steam-Flash Pulsejet Primary

The detailed thermoacoustic cycle described in this section refers primarily to G1 (the Great Pyramid / Khufu). The primary engine is a steam-flash pulsejet whose main purpose is pumping water. The water-hammer cycle that drives the lower assembly builds on the demonstrated hydraulic pulse-generator function of the descending passage and subterranean chamber developed by John Cadman, together with the quantitative mathematical treatment of that cycle by Doug Keenan in Cycles of the Pyramids. Water is lifted via the resonant columns (SAR tubes near 1 Hz) and water-hammer action in the water-filled Descending Passage. Only the upper chambers could have contained steam; the upper-chamber system in G1 supports steam modes near 1.14–1.20 Hz that couple to the SAR tubes. Flash evaporation or thermoacoustic oscillation is sustained by temperature gradients across corbelled regenerator surfaces and granite. The system is designed to handle reactants and products with ease; electrolysis (Queen’s Chamber salt encrustations consistent with Nile-water electrolysis) and sonolysis are byproducts of the high-amplitude acoustic and electromagnetic fields rather than the driving mechanism. Hydrogen and oxygen, if generated, can be consumed or vented without disrupting the steam cycle.

Piezoelectric and inverse-piezoelectric effects in the granite matrix generate electromagnetic fields and launch ultrasonics (500 kHz–6 MHz range, matching crystal sizes of millimeters) directly onto granite surfaces. Heat rises vertically; ultrasound and radio propagate horizontally. In G1, pipes webbed outward from around the King’s Chamber provide horizontal pathways for ultrasonic atomization—consistent with the observed architecture and the physical behavior of heat versus ultrasound. This is how G1 generates its vapour. G2 and G3 atomize water within their moats. The originally smooth casing of each pyramid collects condensation and runoff and funnels it back into the moats. Temples and causeways provide additional atomization stages and water-management infrastructure. Predicted mist plumes are large and persistent, analogous to the Niagara Falls plume under comparable energy and humidity conditions.

The same piezoelectric and electromagnetic coupling that drives surface ultrasound can also produce localized high-voltage discharges. Robert Schoch has identified dendritic branching patterns on the Giza Plateau that he interprets as Lichtenberg figures (electrical discharge patterns) appearing to emanate from beneath the Great Pyramid and the Second Pyramid. These patterns are not attributable to the granite alone. High-amplitude operation of the full pyramid system—its overall size and power, locked to the site-wide ~1 Hz hydraulic network—provides a machine-based mechanism capable of generating the surface electrical discharges that form such patterns in the surrounding limestone, without requiring external plasma events.

5. Outputs and Geoengineering

Modeled pulsed output remains in the 20–30 MW range under idealized Q-factors and continuous aquifer input. Modeled daily pumped volumes are G1 (Khufu) 6,000 m³, G2 (Khafre) 12,000 m³, and G3 (Menkaure) 6,000 m³, for a combined total of 24,000 m³/day. At a typical arid-zone irrigation demand of 10–25 m³/ha/day, this volume supports on the order of 1,000–2,400 ha of productive land. With mist recycling, lower effective application rates, and continuous aquifer input, the system supports thousands of hectares across the complex under sustained operation, plus nitrate fixation from apex corona and ozone. The pyramid tip serves as a virtual grounding point for the electromagnetic fields generated by the piezoelectric and thermoacoustic activity. Corona discharge escaping the tip would not leave visible structural damage on the stone, and the surviving apex conditions are consistent with the tips having been able to withstand the associated discharge under the modeled operating regime. Placement at the Nile Delta headwaters optimizes downwind transport of both mist and recycled water by prevailing northwest winds.

The same continuous water cycling also accounts for the water-erosion features observed around the Great Sphinx and on the pyramids themselves. Schoch (1992 and subsequent work) has documented precipitation-induced weathering on the Sphinx body and enclosure walls—rolling vertical profiles and runoff channels—that he attributes to prolonged rainfall in a wetter climate. Under the machine model, sustained mist generation, condensation, and runoff from the pumping cycle would produce equivalent water exposure and erosion on the surrounding limestone without requiring the Sphinx to predate the Old Kingdom by millennia. Similarly, relative-erosion analyses of the pyramids (Donini 2026) have measured differential weathering between casing-protected and long-exposed limestone surfaces and derived exposure times on the order of 20,000–30,000 years. The model supplies a mechanism for elevated long-term water contact—periodic mist, runoff, and recycled water—that can accelerate surface degradation relative to purely arid conditions, reconciling the observed erosion rates with Old Kingdom construction rather than requiring a Paleolithic origin.

6. Measured Structural Resonance, Earthquake Resistance, and Resonant Macrosonic Synthesis

A 2026 ambient-noise HVSR survey (ElGabry et al., Scientific Reports) recorded 37 measurement points inside and around the Khufu pyramid. The structure exhibits uniform fundamental frequencies of 2.0–2.6 Hz (average ~2.3 Hz) across internal chambers, construction blocks, and exterior elements. This band is clearly separated from the surrounding soil (~0.6 Hz), reducing soil–structure resonance amplification and contributing to seismic resilience. The measured ~2.3 Hz structural resonance lies in the same low-frequency regime as the model’s ~1.14 Hz SAR-tube / upper-chamber coupling band and is consistent with a harmonic or structural drive path for the water-pumping cycle. The pyramidal geometry, massive interlocking masonry, and corbelled/tapered construction provide high seismic resistance. This earthquake-proof character further enables the generation and sustained transmission of powerful low-frequency vibrations and hydraulic resonances throughout the site-wide water-column network without structural failure.

Resonant Macrosonic Synthesis (RMS), developed by Tim Lucas (MacroSonix), demonstrates that the geometry of a closed resonator controls the phases and amplitudes of harmonics. Cylindrical tubes readily form shocks that limit amplitude; tapered, horn-like, or otherwise anharmonic shapes suppress shock formation and permit standing waves with pressure ratios of 20–30 or higher. The Great Pyramid’s overall pyramidal form, the corbelled Grand Gallery (progressively narrowing), and the stepped internal architecture are consistent with RMS principles. These shapes allow high-amplitude, shock-free acoustic energy to be sustained—precisely the condition required for efficient thermoacoustic water pumping and ultrasonic mist generation. Both the measured ~2 Hz structural resonance, the earthquake-resistant construction, and the RMS-compatible geometry therefore support the overall TRP model: the pyramid is shaped and dimensioned to operate as a high-amplitude low-frequency thermoacoustic machine rather than a simple static monument.

7. Limitations

The model depends on unconfirmed SAR features (deep water-filled columns and chambers) that have not been independently verified by dense seismic arrays or drilling. No metal valves or mechanical seals have been recovered. The archaeological sealing plugs and empty sarcophagus remain most economically explained as tomb furniture under conventional interpretation. Energy-balance calculations assume idealized conditions and continuous aquifer input. High-amplitude operation would be expected to leave more extensive thermal and acoustic damage than is universally observed. These constraints limit the model to a coherent engineering hypothesis whose numbers lock to measured geometry and standard material properties; it is not proven historical fact.

8. Conclusion

The TRP model supplies a single quantitative account of pyramid shape, material zoning, chamber proportions, salt deposits, scorch patterns, subsurface columns, moat and casing water management, and Nile-Delta placement. Treating the monuments as steam-flash pulsejet machines first yields a testable engine whose core frequencies (1.003 Hz column, 13 Hz structure, 5 Hz beat, ~1.14 Hz upper-system steam mode, ~1 Hz sub-chamber air-pocket coupled mode) and ultrasonic surface effects derive from measured geometry and standard physics. The tubes under the pyramids form a coupled array of water-column resonators, tuned site-wide near 1 Hz. The pyramids act as the surface drivers and primary pumps for this network, modulating at approximately 1 Hz and locking the entire complex into a coherent hydraulic resonator. The earthquake-resistant construction further enables the powerful low-frequency vibrations required for operation. G1 pumps water and then atomizes it via a radiating pipe network from the King’s Chamber region; G2 and G3 pump water into their moats and atomize it there. Among machine-function theories, this theory is the strongest: it is the most quantitatively constrained and falsifiable engineering account of the pyramids as water pumps. Treating the monuments as machines first and tombs second is consistent with Egyptological understanding of the pharaoh’s role in maintaining maat and the Nile flood, both in life and in the funerary cult. Ancient mythology frames the pyramids as the literal manifestation of the gods’ water-bringing and fertility effects. The Great Pyramid’s ancient name Akhet Khufu and the contemporary references to its associated pool (She Akhet-Khufu, Ro-She Khufu) link the monument to managed water. In the myth of Shu and Tefnut, moisture departs to the south, dryness takes over the land, and she is then retrieved from the south so that moisture and order are restored. The earth (Geb) is the source of the waters and fertility; moisture rises from the ground rather than falling from the sky. The piezoelectric and electromagnetic activity of the full pyramid system (its overall size and power, with the granite transducers as a contributing element) also provides a mechanism for the Lichtenberg figures Schoch has identified on the plateau. The numerous deep shafts around the pyramids catch and recycle water and provide detuning for high-amplitude operation. The water source is the aquifer beneath the plateau; Lake Moeris, even at maximum fill, is lower than all the pyramids of Egypt except the Black Pyramid. The water-hammer cycle builds on Cadman’s demonstrated pulse-generator function and Keenan’s quantitative treatment in Cycles of the Pyramids. Electrolysis and sonolysis are accommodated as byproducts. The next decisive data are confirmatory tomography of the SAR columns and laboratory replication of the 1Hz wave-pump / ultrasonic-mist chain.

All calculations use published dimensions, standard sound speeds, and the geometry and architecture described in the associated posts and modeling. The model stands or falls on those numbers and the outcomes of the listed tests. Diagrams are from posts on X @TeslaPyramids, Facebook (Tesla Pyramids), and https://t.co/1TjA3fpRTH.

The Great Pyramid cross-section diagram from the original teslapyramids.com (2016), shown in dark mode.

My Original Concept: written in 2015, revised in 2016 (Wayback Machine)

The original teslapyramids.com, as archived in May 2024 (Wayback Machine)