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Astronaut John Swigert with "Mailbox"

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Description: (April 17, 1970) Astronaut John L. Swigert, Jr., Apollo 13 Command Module Pilot, holds the "mailbox" a jerry-rigged arrangement which the Apollo 13 astronauts built to use the Command Module lithium hydroxide canisters to purge carbon dioxide from the Lunar Module. Lithium hydroxide is used to scrub CO2 from the spacecraft atmosphere. Since there was a limited amount of lithium hydroxide in the Lunar Module, this arrangement was rigged up using the canisters from the Command Module. The "mailbox" was designed and tested on the ground at the Manned Spacecraft Center before it was suggested to the problem-plagued Apollo 13 crewmen. Because of the explosion of an oxygen tank in the Service Module, the three astronauts had to use the Lunar Module as a lifeboat.

NASA Photo Collection

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lm apollo xiii astronauts jack swigert swigert lm 7 apollo astronaut aquarius apollo 13 lem lunar excursion module lunar module project apollo grumman lunar module lithium hydroxide mailbox command module lithium hydroxide canisters command module pilot command module astronaut john swigert service module astronaut john three astronauts arrangement purge carbon dioxide spacecraft atmosphere spacecraft center canisters oxygen tank nasa
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1970
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NASA

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label_outline Explore Purge Carbon Dioxide, Swigert, Project Apollo

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lm apollo xiii astronauts jack swigert swigert lm 7 apollo astronaut aquarius apollo 13 lem lunar excursion module lunar module project apollo grumman lunar module lithium hydroxide mailbox command module lithium hydroxide canisters command module pilot command module astronaut john swigert service module astronaut john three astronauts arrangement purge carbon dioxide spacecraft atmosphere spacecraft center canisters oxygen tank nasa