Black Hole Injector Apr 2026

This paper proposes a novel propulsion concept, the Black Hole Injector (BHI), which utilizes a primordial or artificially generated microscopic black hole (BH) as a catalyst for complete mass-to-energy conversion. Unlike conventional matter-antimatter engines, the BHI operates by injecting baryonic matter into a stable, electrically charged, rotating black hole (Kerr-Newman metric). Through Hawking radiation and superradiant scattering, the BH re-emits up to ~40% of the injected rest mass as directed high-energy gamma rays and relativistic plasma jets. We derive the thermodynamic limits, stability criteria (the "sphericity constraint" to avoid runaway evaporation), and a theoretical specific impulse (I_sp > 10^7 , s). The BHI circumvents the antimatter storage problem by using ordinary hydrogen as fuel. We conclude with a feasibility analysis of containment using nested magnetic and gravitational shields.

[ P_\texttotal = P_\textHawking + P_\textSuperradiant + P_\textAccretion ]

Note: The thrust exceeds a Saturn V by a factor of 5 while using 10 million times less fuel mass.

If ( M_BH < M_\textcritical \approx 10^11 , \textkg ), the Hawking radiation power exceeds the Eddington limit, causing rapid evaporation. For our ( 10^6 ) kg BH, evaporation time without refueling is: [ t_\textevap = \frac5120 \pi G^2 M^3\hbar c^4 \approx 4.5 \times 10^7 , \texts , (\approx 1.4 , \textyears) ] Thus, continuous fuel injection is mandatory. A feedback loop adjusts injection rate to maintain ( \dotM \approx 0 ). Failure leads to an explosion equivalent to ( 10^6 ) kg converting to energy — a 20 Gigaton blast, necessitating failsafe detachment systems. black hole injector

| Parameter | Value | Unit | |-----------|-------|------| | BH Mass | ( 10^6 ) | kg | | Schwarzschild Radius | ( 1.48 \times 10^-21 ) | m | | Hawking Temperature | ( 1.2 \times 10^11 ) | K | | Thrust (at 1 kg/s injection) | ( 2.4 \times 10^7 ) | N | | Specific Impulse ((I_sp)) | ( 2.4 \times 10^7 ) | s | | Power-to-Weight Ratio | ( \sim 10^6 ) | W/kg |

A naked singularity is impossible (cosmic censorship). Thus, the BH must be isolated. We propose a magnetic mirror trap (modified Penning trap) using superconducting coils generating 100 T fields, located 1 km from the BH to avoid spaghettification. The BH is levitated via the Meissner-like effect against a superconducting stator.

[1] Hawking, S.W. (1975). Particle creation by black holes. Commun. Math. Phys. 43, 199. [2] Penrose, R. (1969). Gravitational collapse: The role of general relativity. Nuovo Cimento 1, 252. [3] Misner, C.W., Thorne, K.S., Wheeler, J.A. (1973). Gravitation . Freeman. [4] Crane, L., Westmoreland, S. (2009). Are black hole starships possible? arXiv:0908.1803 . This research was supported by a grant from the Initiative for Interstellar Studies (i4is), hypothetical division. This paper proposes a novel propulsion concept, the

| System | (I_sp) (s) | Thrust (N) | Storage Hazard | |--------|--------------|------------|----------------| | Chemical | (300-450) | (10^7) | Low | | Nuclear Thermal | (900) | (10^6) | Medium | | Ion Drive | (3,000) | (10) | Low | | Antimatter | (10^7) | (10^5) | Extreme | | | (2.4 \times 10^7) | (10^7) | Extreme (but passive) |

The Black Hole Injector: A Theoretical Framework for Mass-Energy Conversion and Ultra-Relativistic Propulsion

The emitted Hawking radiation (predominantly gamma rays at ( T \sim 10^11 , K ) for ( M = 10^6 ) kg) is absorbed by a tungsten-lithium heat exchanger, driving a closed-cycle Brayton turbine. The relativistic jets (from superradiance) are collimated by external magnetic nozzles to produce thrust. We derive the thermodynamic limits, stability criteria (the

Chemical and nuclear propulsion are fundamentally limited by their exhaust velocity ( ( \sim 500 , s) to ( \sim 10^6 , s) for ion drives). Antimatter provides the highest energy density ((9 \times 10^16 , J/kg)) but suffers from catastrophic storage issues. The Black Hole Injector (BHI) offers an alternative: a self-regulating black hole that converts infalling matter into radiation with an efficiency ( \eta ) exceeding nuclear fusion by two orders of magnitude.

For a BH of mass ( M ), the Hawking luminosity is: [ P_\textH = \frac\hbar c^615360 \pi G^2 M^2 \approx 3.6 \times 10^32 \left( \frac10^6 \textkgM \right)^2 \textW ]