Black Hole Injector _best_

: This requires carefully removing the carbon (often using specialized solvents), extracting the "stuck" injector with a slide hammer if necessary, and cleaning the seat thoroughly with a bottoming tap before replacing the seal. High-Performance Fuel Injectors

A. J. Vance, L. M. Chen Affiliation: Institute for Advanced Propulsion Studies, Caltech / MIT (Hypothetical) black hole injector

As matter falls toward the horizon, incoming radiation from the universe gets blue-shifted to infinite frequency. Any injector falling with its payload would be incinerated by the CMB (Cosmic Microwave Background) turned into a gamma-ray furnace. The solution? The injector must fire its payload the flow of infalling time, essentially dropping a package over the horizon while the injector accelerates away at relativistic speeds. : This requires carefully removing the carbon (often

In a more literal sense, scientists use "injectors" to create on Earth. These experiments help us understand how black holes affect their environment without having to travel to one. Vance, L