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1993-04-21
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OFFICE OF PUBLIC INFORMATION
JET PROPULSION LABORATORY
CALIFORNIA INSTITUTE OF TECHNOLOGY
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
PASADENA, CALIFORNIA. TELEPHONE (213) 354-5Oll
FOR IMMEDIATE RELEASE JANUARY 23,
1976
One of three small ovens on an experiment aboard
NASA's
Viking 2 Lander apparently did not operate during recent
checkout
tests of the instrument.
A study of the data from the tests showed that oven
1
either failed to heat or that data from a timing device is
faulty.
Telemetry from the timer indicates whether or not an oven is
on.
The problem with the oven did not affect the
operation of
the experiment which worked well throughout the test.
Project officials are assuming that oven 1 did not
turn on
but will not be sure until the operation of the oven, on
Mars, with
a soil sample.
The ovens will heat Martian soil samples to 932`F
to identify
chemical processes in the soil and determine if organic
materials exist
in the soil that would indicate the possibility of life forms
on the
planet, either in the past or at present.
The experiment is separate from the three Vikingbiology experi-
ments which will make direct tests for life in the Martian
soil.
The possible loss of one oven means that only two
soil samples
will be tested instead of three and will not affect the
operation of
the experiment.
-more-
----*
-2-
The experiment's instrument is a Gas Chromatograph
Mass
Spectrometer, a complex device used in laboratories on Earth
for
molecular analysis. The compact flight version of the
instrument
was specially designed for the Viking project.
The experiment will also identify modules in the
Martian
atmosphere but this part of the experiment does not require
the ovens.
The two Viking spacecraft, launched in August and
September,
will reach Mars on June 19 and August 7. The first Lander
will be
detached from the Viking Orbiter and descend to the surfacein the
first week of July. Lander 2 wil1 descend during the first
week in
September. Each Lander carries a full compliment of
identical experi-
ments.
#####
AW--l/23/76
#779