Apollo Command Module Block II Reaction Jet and Engine On-Off Controller (RJ/EC) manufactured by Honeywell, 23.5 x 5.75 x 6, with an affixed parts label reading, “Control Reaction Jet and Engine On-Off, NAA/S & ID Control No. ME901-0706-0402, Mfr Serial No. 10028AAF1023, Mfr Part No. BG287HS, Contract No. N7J7XAH-470005A, Mfr Date 21 Mar 1969.” Scattered marks, dings, and soiling, otherwise fine condition. Part of the Apollo Command Module Stabilization and Control System, the RJ/EC includes solenoid drivers and logic circuits to translate spacecraft computer or manually initiated commands into firing of the Reaction Control System (RCS) attitude control thrusters and the Service Propulsion System main engine. The RCS firings were important to the CM as they allowed adjustment to attitude without affecting the critical accuracy of orbital, trans-lunar, and trans-earth trajectories. Oversized. Please contact RR Auction for a shipping quote.
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