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Nuclear thermal rockets can provide great performance advantages compared to chemical propulsion systems.
Without a manned mission to Mars, the need for a nuclear thermal rocket was unclear.
These methods resemble those proposed for nuclear thermal rockets.
Uranium carbide fuel was used in late designs of nuclear thermal rockets.
Project Rover was an American project to develop a nuclear thermal rocket.
The amount of contamination would depend on the size of the nuclear thermal rocket engine.
Project Timberwind aimed to develop nuclear thermal rockets.
Unmanned missiles have been designed to use nuclear thermal rockets, but such designs were considered too dangerous for crews to fly.
Typical all-rocket systems are around 450 at best, and even "typical" nuclear thermal rockets only about 900 seconds.
Five astronauts pilot the nuclear thermal rocket powered Pegasus spacecraft on a tour of the solar system.
The Phoebus nuclear thermal rocket engine developed in the 60s by Project Rover.
Nuclear thermal rockets or Solar thermal rockets could use it as reaction mass.
As with nuclear thermal rockets, the specific impulse achievable by these methods is limited by materials considerations, typically being in the range of 1000-2000 seconds.
With current solid-core nuclear thermal rocket designs, it's possible that potentially radioactive fuel elements would be dispersed intact over a much smaller area.
The simplest of nuclear thermal rockets, solid core reactors are limited by the melting point of the materials used in the reactor cores.
One of the more explored is the nuclear thermal rocket, which was tested in the NERVA program.
The problem was quickly overcome, however, and over the next twenty-five years U.S. nuclear thermal rocket designs eventually reached thrust-to-weight ratios of approximately 7:1.
Anthony Zuppero is an American nuclear scientist who is noted for his work in nuclear thermal rockets using water as the propellant.
Whereas the full "active" reactor system in a nuclear thermal rocket can be expected to generate over a gigawatt, a radioisotope generator might get 5 kW.
Nuclear thermal rocket engines differ from conventional rocket engines in that thrust is created strictly through thermodynamic phenomena, with no chemical reaction.
They are similar in nature to the nuclear thermal rockets such as NERVA, but are considerably simpler and often have no moving parts.
A laser thermal rocket can have a thrust-to-weight ratio similar to chemical rockets, while achieving a specific impulse similar to nuclear thermal rockets.
Bimodal Nuclear Thermal Rockets conduct nuclear fission reactions similar to those safely employed at nuclear power plants including submarines.
From 1987 through 1991, the SDI Office funded Project Timberwind, a non-rotating nuclear thermal rocket based on particle bed technology.
In traditional nuclear thermal rocket and related designs, the nuclear energy is generated in some form of "reactor" and used to heat a working fluid to generate thrust.