payloads means making the
payloads and MOM suitable to withstand all conditions that will be present in
its orbit and any other possible events that may be encountered.
Atmospheric conditions, dust, radiation from every where & light
from Sun, temperature ranges, and possible eclipses. Strengths and
characteristics of materials used should be suitable to these.
Further the capabilities of
the electronic instruments and imaging apparatus are designed to be able to
sense or capture the data from the atmosphere and the shallow surface of Mars.
See diagram of MOM please.
The 2nd diagram shows the payloads clearly.
Payloads on Mars Orbiter
MOM has 5
scientific exploration based instruments or devices. These are the
payloads (electronic devices). Lyman-Alpha Photometer (LAP),
Methane sensor, Exospheric Neutral composition Analyzer, Thermal
Infrared Imaging Spectrometer, Mars Color camera. These are functioning
now and are sending data to us through the transponder device. These
are weighing 1 kg to 3 kg each.
MOM weighs 1350 kg
along with its fuel. It has solar panels to generate 800 Watts of energy
and is stored in a Lithium ion battery. MOM has fuel to last
for 1 year as against 6 months intended mission (when it entered the
Aero-centric orbit). There
are three antennas high gain antenna, medium gain antenna and low
gain antenna. There
is a reflector that receives signals and transmits signals towards Earth.
A transponder communicates with master control facility of ISRO, via a TWT
amplifier and an antenna array.
Aluminum and CFRP (Carbon
Fiber Reinforced Polymer) material is used for MOM as it has high strength/unit
mass, no rusting, and high temperature withstanding capability.