The nuclear-powered engine I proposed earlier would need to operate continuously once it is started. The nuclear core inside is air cooled which requires certain air flow. Therefore, the engine would be started on air at certain altitude and speed. The surveillance plane and the engine should be light to reduce thrust requirement to stay airborne. Lower energy requirement equates to lower radioactive material which reduces the environmental risk. The plane would patrol over the oceans away from human population. In case of failure the plane would be directed to the nearest deep sea to be buried under hundreds of meters of seawater. The planes continuous movement would negate the need for heavy shielding of the core. Any high energy particle escaping from the plane’s engine would disperse over a large area which pose minimal environmental hazard. As I stated earlier, a heavier shielding would require more radioactive material to keep the plane airborne. Aluminum is very resistant to radiation damage and is light weight. The aluminum block with high thermal mass covering the core would create moderate shielding against the radiation as well. There would be a thin layer of copper between the core and the aluminum to increase the thermal surface area and prevent aluminum from melting.
The engine would be on the center of the plane and high aspect ratio wings would be attached on it. The surveillance equipment would be attached on either side of the engine. High aspect ratio wings would generate high lift at high altitudes. The planes would be deployed as clusters like the satellite constellations. They may even stay airborne longer than some satellites. They would not be serviceable. If they fail, they need to be discarded on a dead spot on the ocean.
The plane would utilize thermoelectric generator I proposed last year to convert heat energy directly to electricity coupled with a backup battery to be used during launch.
The planes would be deployed on air behind a high-altitude drone plane. The planes would be attached one after the other on a strong light weight tether. They would look like the tails of a kite. Onboard battery would be used to control the flight controllers which would stabilize the plane on air like a glider. Once deployment criteria are met, they would be released one after the other behind the drone plane. The release from the attached cord would pull the safety pin which releases the lead shield covering the neutron emitting isotopes. The neutron bombarding the nuclear core would start the engine. This is the critical part that needs to be perfected.







































