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NRX (nuclear reactors)
A series of nuclear reactors designed and built as part of the NERVA program. They were developed to show that the KIWI-B4 series from the Rover program could be adapted to withstand launch loads such as those of vibration and shock. The NRX series progressively added components consistent with a rocket engine capability and began demonstrating restart capability and controllability. The other reactor series developed during the NERVA program was XE-Prime. See also nuclear propulsion.
| XE-Prime series summary | |||
|---|---|---|---|
| project | date | max power (MWt) |
burn time (sec) |
| NRX-A2 | Sep. 24, 1964 | 1,096 | 40 |
| NRX-A3 | Apr. 23, 1965 | 1,093 | 210 |
| May 20, 1965 | 1,072 | 792 | |
| NRX-A4/EST | Mar. 1966 | 1,055 | 1,740 |
| NRX-A5 | Jun. 1966 | 1,120 | 1,776 |
| NRX-A6 | Dec. 15, 1967 | 1,125 | 3,720 |
| NRX A-6 performance parameters | |
|---|---|
| Reactor power (MWt) | 1,125 |
| Flow rate (kg/s) | 32.7 |
| Fuel exit temp (K) | 2,472 |
| Chamber temp (K) | 2,342 |
| Chamber pressure (MPa) | 4.13 |
| Core inlet temp (K) | 128 |
| Core inlet pressure (MPa) | 4.96 |
| Reflector inlet temp (K) | 84 |
| Reflector inlet pressure (MPa) | 5.19 |
| Periphery & structural flow (kg/s) | 0.4 |
Related category
• ADVANCED PROPULSION CONCEPTS
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