The Incognito

A garbage truck in the sky. The Incognito is a spacecraft concept for collecting and disposing of orbital debris, from inventor John Arwood, whose background is in waste collection and disposal. The design is patent pending.

It is designed as a self-sustaining orbital craft with ion thrusters for high fuel efficiency, so it would need to refuel less often and could haul heavier loads over greater distances. A nuclear reactor would supply main power, with solar cells around the exterior as backup.

Front-view concept render of The Incognito orbital debris-collection craft with twin rear engine pods and a solar-array hull.

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Protection From Above

Maneuverability:

The Incognito has thrusters all across its exterior, so it can make rapid, controlled maneuvers. That agility is meant for long missions in both time and distance — expeditions, research assignments, and the close work of approaching and moving large objects. The extra thrust is also meant for hauling huge objects over long distances.

Front-view concept render of The Incognito orbital debris-collection craft with twin rear engine pods and a solar-array hull.
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The International Space Station in orbit, photographed in 2011, used as a small homepage illustration.
Concept illustration of The Incognito towing a satellite with large solar panels, using a debris tether.

Concealed
Exploration

A Self-Sustaining Orbital Debris-Collection Craft

Electromagnetic Propulsion

With an ion propulsion system, The Incognito would need far less fuel than a chemical stage for the same kind of in-space work. The aim is a cost- and resource-efficient collection craft, not a launch vehicle. Ion thrusters are for work already in orbit.

Animated concept render of The Incognito spacecraft turning to show its twin engine pods and solar hull.

Nuclear Powered Reactor

Fuel efficiency is only part of the design. The Incognito is also described as a nearly fully self-sustaining system, built for durability on long missions, with a nuclear reactor as its main power source.

Animated concept render of The Incognito spacecraft, a blue orbital debris-collection craft with twin rear pods.

Solar Back-Up

Solar cells surrounding the exterior are there for support, especially on missions that are expected to haul space debris larger than the vehicle itself. Power distribution can change: solar power can run the smaller thrusters on the sides, while the main power source drives the larger rear thrusters.

Animated concept render of The Incognito spacecraft in motion.

Asteroid Mining

Asteroid mining would initially require in-space assembly, plus two other spacecraft in the Incognito series. After assembly and connection of The Incognito with those later spacecraft, mining S-type asteroids — which can carry nickel, cobalt, and more valuable metals such as gold, platinum, and rhodium — would be possible, and inexpensive compared with similar missions.

Illustration of a rocky asteroid, used on the homepage asteroid-mining section.

How ion propulsion works

An ion thruster produces thrust by turning a propellant into ions and accelerating those ions with electric fields. In a common design, a high-energy electron collides with a neutral propellant atom, knocks electrons loose, and leaves a positively charged ion. The mixture of ions and electrons is a plasma: it behaves in some ways like a gas, but it can be guided by electric and magnetic fields.

A working ion-propulsion system is more than the thruster. A power processing unit converts electricity from a power source — typically solar cells, or a nuclear source — into the voltages and currents the thruster needs. A propellant management system delivers that propellant in a controlled way, often stepping it down from high tank pressure to a carefully metered flow. A digital control and interface unit monitors the system and talks to the spacecraft computer.

Ion thrusters use very little propellant compared with chemical rockets, and they can run for a long time. Their thrust at any given moment is low, which is why they are used in space, not to lift a vehicle off the pad. That long, efficient push is what makes them a fit for a debris-collection craft that must rendezvous, haul, and keep working without constant refueling. NASA has flown ion propulsion on missions such as Dawn; that heritage is general background, not a claim that The Incognito's hardware has been built or tested by NASA.

Three-quarter concept render of The Incognito debris-collection craft, showing its solar hull, twin engine pods, and debris tether.

Built for the work

The Incognito is proposed for:

  • Hauling and large space-debris collection
  • Small-debris cleanup, with the right add-ons
  • Exploratory and research missions
  • A versatile platform with defense applications available to qualified government partners on request

The strongest feature is versatility. With in-space add-on installation, The Incognito could change, switch, and attach different components for different jobs — whether the assignment is debris collection, research, or exploration.

Read the full concept overview, The Incognito: A Garbage Truck in the Sky, or go to Our Purpose, Our Specs, the FAQ, and Contact John.

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