FREE ESTIMATE. To buy, auction, sell or consign your TR-204 Saturn V attitude control rocket engine that is for sale, please email your description and photos to [email protected]. Nate D. Sanders Auctions (http://www.NateDSanders.com) holds monthly auctions and can offer a high reserve for your TR-204 Saturn V attitude control rocket engine.

Please let us know if you have a TR-204 Saturn V attitude control rocket engine for sale. Top dollar obtained for your TR-204 Saturn V attitude control rocket engine.

TR-204 Saturn V Attitude Control Rocket Engine

From Wikipedia:

The Saturn V (spoken as “Saturn five”) was an American human-rated expendable rocket used by NASA between 1967 and 1973.[7] The three-stage liquid-fueled super heavy-lift launch vehicle was developed to support the Apollo program for human exploration of the Moon and was later used to launch Skylab, the first American space station. The Saturn V was launched 13 times from the Kennedy Space Center in Florida with no loss of crew or payload. As of 2017, the Saturn V remains the tallest, heaviest, and most powerful (highest total impulse) rocket ever brought to operational status, and holds records for the heaviest payload launched and largest payload capacity to low Earth orbit (LEO) of 140,000 kg (310,000 lb), which included the third stage and unburned propellant needed to send the Apollo Command/Service Module and Lunar Module to the Moon.[5][6]The largest production model of the Saturn family of rockets, the Saturn V was designed under the direction of Wernher von Braun and Arthur Rudolph at the Marshall Space Flight Center in Huntsville, Alabama, with Boeing, North American Aviation, Douglas Aircraft Company, and IBM as the lead contractors.To date, the Saturn V remains the only launch vehicle to launch missions to carry humans beyond low Earth orbit. A total of 15 flight-capable vehicles were built, but only 13 were flown. An additional three vehicles were built for ground testing purposes.

From Spaceaholic:

Thompson Ramo Wooldridge (TRW) Inc. Rocket Engine developed for application as the Apollo Saturn V Launch Vehicle S-IVB (Third Stage) Auxiliary Propulsion System (APS) Attitude Control Engine. Three 150 pound thrust (670 Newton) TRW, Inc. TR-204 engines were employed in each of the two attitude control modules affixed to the S-IVB stage (employed as both the second stage on the Saturn IB and the third stage of the Saturn V launch systems). Hypergolic bi-propellants (Nitrogen Tetroxide combined with Monomethylhydrazine) fed at an oxidizer to fuel ratio of 1.60 was supplied to the engine under positive pressurization via independant helium and propellant storage tanks housed within each APS module. The APS provided roll control during J-2 engine powered phases of flight, pitch, yaw, and roll (attitude) control during coast periods; maneuvering impulse during undocking and extraction of the Lunar Module, and also propellant settling (ullage). Firing control for the TR-204 was initiated by the Instrument Unit Flight Control Computer. As a final act of glory, the APS was continuously fired until depletion to propel the spent S-IVB stage to lunar impact to produce seismic energy for detection by sensors emplaced on the moon’s surface during preceding Apollo missions.

The TR-204 combustion chamber is lined with ablatively refrasil material. The engines have quadruple propellant injector valves for redundancy. The thrust chamber assembly (TCA) is integrally fabricated and composed of three major elements: the combustion chamber, the nozzle throat section and the nozzle expansion cone with an expansion ration of 33.9 to 1. The engine was qualified for a total pulse operation of 300 seconds. During the Saturn program, this engine achieved an overall reliability design goal of 0.992 at a 90-percent confidence level while operating.

The engine propellant valve assembly consists of eight normally closed, quad redundant propellant valves (four oxidizer and four fuel), arranged in two series parallel arrangements. Dual failure within the manifold fuel or oxidizer arrangement was required to cause failure of the rocket engine assembly. An assembly closed failure would have prevented any operation while an assembly open failure would have resulted in continuous flow and loss of all propellant. Assembly valve failure cannot occur unless two valves fail open in series or two valved failed closed in parallel. This high degree of reliability was nessessary to prevent the possibility of a mission abort do to loss of spacecraft/launch vehicle attitude control prior to separation of the Saturn third stage and the Apollo Command Service Module (CSM). The inlet ot the valve package contains a 100 mesh screen (150 microns) to protec the engine from large particulate conamination.

The injector valves provided positive on-off control of propellant flow upon command from an external power source (28 volts DC). Four valves, integral in an assembly were capable of simultaneous operation and were synchronized to allow or terminate propellant flow within 3 milliseconds of each other. The opening time for each valve assembly, defined as the time from initiation of open signal to fully open valve package did not exceed 23 milliseconds.

The injector consists of twelve pairs of unlike-on-unlike doublets arranged to minimize hot spots in the combustion chamber. The valve side of the injector is filled with a silver braze heat sink which reduces injector operating temperature. During the 300-second life requirement, the external wall temperature was designed not to exceed 600 degrees F and the maximum valve body external temperature did not exceed 165 degrees F.

Recently, a TR-204 Saturn V attitude control rocket engine sold for over $70,000 at auction and we at Nate D. Sanders Auctions (email [email protected]) can obtain up to $70,000 or more for you.

TR-204 Saturn V Attitude Control Rocket Engine FREE APPRAISAL.  Email [email protected], phone (310) 440-2982 or go to the Nate D. Sanders Auction House website at http://www.NateDSanders.com.  The TR-204 Saturn V attitude control rocket engine is worth up to $70,000 or more.

Consign yourTR-204 Saturn V attitude control rocket engine at Nate D. Sanders Auctions. Send a description and images of your TR-204 Saturn V attitude control rocket engine to us at [email protected].

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Exceptionally Scarce Apollo 11 Flag Flown to the Moon — Signed by Armstrong, Aldrin & Collins

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TR-204 Saturn V Attitude Control Rocket Engine / Click above for larger image.

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FREE ESTIMATE. To buy, auction, sell or consign your TR-204 Saturn V attitude control rocket engine that is for sale, please email your description and photos to [email protected]. Nate D. Sanders Auctions (http://www.NateDSanders.com) holds monthly auctions and can offer a high reserve for your TR-204 Saturn V attitude control rocket engine.

Please let us know if you have a TR-204 Saturn V attitude control rocket engine for sale. Top dollar obtained for your TR-204 Saturn V attitude control rocket engine.

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