8 Matching Results

Search Results

Advanced search parameters have been applied.

A STUDY OF THE NUCLEAR GASEOUS REACTOR ROCKET

Description: A detailed study is presented of some fundamental problems connected with the realization of a nuclear gaseous reactor rocket engine. The virtue of such a propulsion scheme is that the energy of the fission fragments is transferred directly to the propellant. Thus the heat-transfer problem of the conventional heat exchanger type of nuclear rocket is avoided and very high values of the specific impulse (>1000 sec) might be achieved. The discussion centers mainly around contaainment of the propellant gases during heat addition, maintaining the nuclear chain reaction, and an assessment of the principal factors contributing to cost. It is shown that reasonable values of cost per unit payload are to be achieved only by considering payloads about two orders of magnitude larger than any of current interest. Possible means for improving the situation, such as dissociation-recombination effects, pulsed operation, centrifugal separation of nuclear fuel and propellant, are investigated without reaching favorable results. (auth)
Date: October 31, 1957
Creator: Fox, R.H.
Partner: UNT Libraries Government Documents Department

NUCLEAR BATTERY--THERMOCOUPLE TYPE. Quarterly Report No. 1 for January 1, 1957-March 31, 1957

Description: The potential usefulness as a heat source for the thermal battery of 1300 radioactive isotopes was investigated. All but thirty-two have been eliminated because of too long or too short a half-life and/or excessive gamma radiation of the isotope or element. Further eliminations are being made on the basis of relative availability and costs. (auth)
Date: March 31, 1957
Creator: Blanke, B ertram C.
Partner: UNT Libraries Government Documents Department

NUCLEAR BATTERY-THERMOCOUPLE TYPE THIRD QUARTERLY REPORT for JULY 1, 1957 TO SEPTEMBER 30, 1957

Description: A second thermoelectric generator consisting of unitized rings of thermopiles was designed and constructed. Three and four rings were asserabled into generators and tested. A maximum efficiency of 0.67% was obtained. At a DELTA T of 400 deg C, an efficienty of 0.56% was obtained; the theoretical maximum for the materials used is 0.83%. (auth)
Date: September 30, 1957
Creator: Blanke, B.C.
Partner: UNT Libraries Government Documents Department