On Mars by Ezell Edward Clinton; Ezell Linda Neuman; Dickson Paul & Linda Neuman Ezell

On Mars by Ezell Edward Clinton; Ezell Linda Neuman; Dickson Paul & Linda Neuman Ezell

Author:Ezell, Edward Clinton; Ezell, Linda Neuman; Dickson, Paul & Linda Neuman Ezell
Language: eng
Format: epub
ISBN: 1900993
Publisher: Dover Publications
Published: 2012-10-11T04:00:00+00:00


Table 47

Viking Demonstration and Training Tests

Date Test Nature and Results

2 July DT-2 Processing uplink commands to lander through orbiter for cruise checkout. Data processing went well, but flight team needed more training.

13 July DT-3 Fifty-hour cruise operation test culminating mock midcourse maneuver. Working around the clock, flight team met several problems. Successful test.

25-26 July DT-1 Three-part exercise. Part 1 covered spacecraft powerup through launch to 6 hours into mission. Part 2 covered midcourse maneuver. Part 3, conducted at request of Deep Space Network personnel, covered lander memory-readout sequence. All 3 parts successful.

10 July TT-1 Simulation of midcourse maneuver with simulated emergencies. Not successful.

28 July TT-1 rerun Successful retest of TT-1.

SOURCE: R. D. Rinehart and H. Wright, “Daily KSC Status (FAX),” memos dated 23, 24, 25, and 26 June 1975; and VPO, “Mission Operations Status Bulletin,” no. 7, 23 June 1975, and no. 8, 8 July 1975.

During the last week before liftoff, final preparations were made:

29 July Orbiter precountdown checkout and lander cruisemode monitoring tests completed.

30-31 July Lander computer prelaunch checkout.

1 August Composite electrical readiness test completed.

2 August Super Zip installed on Viking A shroud. (Super Zip is a linear explosive charge used to separate the clamshell halves of the shroud after launch.)

3 August Pyrotechnic ordnance devices installed on Viking A.

6-7 August Propellants loaded into Titan IIIE launch vehicle.



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