This document compiles all the mathematical equations, values, and data discussed in the MHD Core project presentations.
Theoretical Foundations
Quantum Field Theorist's Equations
Zero-Point Energy of a Quantum Harmonic Oscillator:
E: Zero-point energy
: Reduced Planck's constant
: Angular frequency
Casimir Effect Force Between Two Plates:
FCasimir: Casimir force
c: Speed of light
A: Area of the plates
L: Separation between the plates
Dynamic Casimir Effect Photon Generation Rate:
: Photon generation rate
cavity: Resonant frequency of the cavity
: Modulation amplitude of cavity length
: Original cavity length
Expectation Value of the Energy-Momentum Tensor:
Tμν: Energy-momentum tensor
gμν: Metric tensor of spacetime
Electromagnetic Field Specialist's Equations
Modified Wave Equation with Scalar Potential:
: Scalar potential
: Charge density
: Vacuum permittivity
Magnetic Flux Quantum:
0: Magnetic flux quantum
h: Planck's constant
e: Elementary charge
Material Development
Superconducting Material Properties
Yttrium Barium Copper Oxide (YBCO):
Critical Temperature (Tc): Approximately 92 K
Critical Current Density (Jc): Exceeding A/cm² at 77 K
Barium Zirconate Nanoparticles Enhancement:
Increase in Critical Current Density: 30% under high magnetic fields
Quantum Behaviors in Superconducting Materials
Cooper Pair Formation:
Electrons form bound pairs enabling zero electrical resistance.
Flux Quantization Equation:
: Magnetic flux through a superconducting loop
n: Integer (quantum number)
0: Magnetic flux quantum
Energy Gap in Superconductors:
: Energy required to break a Cooper pair
: Energy gap parameter
Engineering Design
Levitation System Equations
Magnetic Force Equation:
mag: Magnetic force
: Magnetic moment
: Magnetic field
Electrostatic Force Equation:
elec: Electrostatic force
Q: Electric charge
: Electric field
Control Systems and Simulations
Levitation Control Equations
State Equations:
: Position vector
: Velocity vector
m: Mass of the core
dist: Disturbance force
Cost Function for Nonlinear Model Predictive Control (NMPC):
J: Cost function
Tp: Prediction horizon
ref: Reference position
: Control input
Q, R: Weighting matrices
Charge Regulation Equations
Sliding Surface Definition:
s(t): Sliding surface
e(t) = q_{\text{ref}}(t) - q(t): Charge error
: Positive constant
Control Law:
u(t): Control input
k: Adaptive gain
sign(s(t)): Sign function
Acoustic Integration
Hypersound Frequencies and Phonon Interactions
Hypersound Frequency Range: Above 1 GHz
Phonon-Electron Coupling: Interaction mechanism between high-frequency phonons and electrons in materials.
Environmental Alignment
Schumann Resonance Frequencies
Schumann Resonance Modes
Mode
Frequency (Hz)
Wavelength (km)
1
~7.83
~38,300
2
~14.3
~21,000
3
~20.8
~14,400
4
~27.3
~11,000
5
~33.8
~8,900
Variability: Frequencies can shift by ±0.5 Hz due to ionospheric conditions.
Geomagnetic Pulsation Frequencies
Geomagnetic Pulsations
Category
Frequency Range
Associated Phenomena
Pc1
0.2–5.0 Hz
Electromagnetic ion cyclotron waves
Pc2
5–10 mHz
Field line resonances
Pc3
10–45 mHz
Cavity modes in the magnetosphere
Pc4
45–150 mHz
Large-scale magnetospheric oscillations
Pc5
1–7 mHz
Solar wind coupling effects
Mathematical Modeling
System Dynamics Equations
Core Motion Equations:
: Acceleration
: Coil currents
State-Space Representation:
: Orientation angles
: Angular velocities
mag, elec: Magnetic and electrostatic torques
: Moment of inertia tensor
Sliding Surface for Adaptive Sliding Mode Control (ASMC):
Control Law for ASMC:
Control Algorithms Parameters
Parameters Definitions:
m: Mass of the core
, : Position and velocity vectors
, : Orientation and angular velocity vectors
mag, elec: Magnetic and electrostatic forces
dist: Disturbance forces
: Moment of inertia tensor
mag, elec: Magnetic and electrostatic torques
e(t): Error signal
: Positive constant for sliding surface
k: Adaptive gain for control law
: Control input vector
Key Constants and Physical Quantities
Planck's Constant (h):
Reduced Planck's Constant ():
Speed of Light (c):
Elementary Charge (e):
Vacuum Permittivity ():
This document compiles all the mathematical equations, values, and data relevant to the MHD Core project, providing a comprehensive reference for team members and stakeholders.