The Woodward Transient Mass Effect as a Consequence of G4v Machian Gravitation

We derive the Woodward transient mass effect from Carver Mead’s G4v Machian gravitationthrough two distinct channels with different suppression characteristics.The scalar channel produces mass fluctuations δm∝¨ρE via the Abraham equation. Underthe Mach ansatz ρE = ρ0ϕ the field equation can be solved for the transient source rather thanthe field perturbation yielding a coefficient proportional to 1/(Gρ0c2) rather than χ= ℓ2P. TheMach normalization λ= ϕ0/c20 ≈0.72 ensures an order-unity result. Electromagnetic energyenters the gravitational source ρE via Mead’s Eq. 3.10 with precedent in G4v’s treatment ofthe London moment.The vector channel provides thrust via Mead’s momentum coupling ⃗p= m⃗v(1 + λ). Thisequation contains G/c2 not χ the ℏ in the wave vector cancels with χ= ℏG/c3. Summing overcosmic matter yields λ ≈0.72 directly—an order-unity result that is Mach’s principle. Thevector channel couples to the cosmic matter distribution (the Machian inertial frame) not adevice-sourced perturbation and is therefore immune to Planck suppression.˙The effect is fundamentally transient: the mass fluctuation δm(t) tracksP(t). Net thrustarises through mechanical rectification—in MEGA devices asymmetric masses ensure the oscil-lating mass fluctuation produces net force. The framework applies to both MEGA (mechanicalrectification) and MLT (electromagnetic rectification) devices.