Temperature and Winds for InSight

Temperature and Winds for InSight (TWINS)

TWINS sensor

Operator| NASA / Jet Propulsion Laboratory
Manufacturer| Spanish Astrobiology Center (CSIC-INTA)
Instrument type| Atmospheric sensors
Function| Meteorology suite
Mission duration| 2 years (planned)
Began operations| 26 November 2018, 19:52:59 UTC (landing)
Host spacecraft
Spacecraft| InSight
Operator| NASA / JPL
Launch date| 5 May 2018, 11:05 UTC
Rocket| Atlas V 401 [1]
COSPAR ID| 2018-042A

Temperature and Winds for InSight (TWINS) is a NASA meteorological suite of instruments on board the InSight lander that landed on Mars on 26 November 2018. TWINS provides continuous wind and air temperature measurements to help understand the seismic data from the Seismic Experiment for Interior Structure (SEIS) instrument. The instruments were developed by the Spanish Astrobiology Center at Madrid, Spain .

## Contents

* 1 Overview
* 2 Auxiliary Payload Sensor Suite (APSS)
* 3 See also
* 4 References

## Overview

Sensor boom for this family of instruments

TWINS is based on the heritage from REMS (Rover Environmental Monitoring Station) on board the Curiosity rover, with enhanced performances in terms of dynamic range and resolution.[2] TWINS provides continuous wind and air temperature measurements to help understand the seismic data from the SEIS instrument.

While probing the internal structure of Mars is the primary scientific goal of the InSight mission, atmospheric science remains a key science objective.[3] InSight will provide a continuous and higher-frequency record of pressure, air temperature and winds at the surface of Mars than previous in situ missions.[3]

The sensors include thermometers, and an anemometer to measure wind speed and direction twice per second. Additional sensors are the InSight FluxGate (IFG) magnetometer provided by University of California, Los Angeles (UCLA) to measure the direction and magnitude of magnetic fields such as those caused by the Martian ionosphere; and a highly sensitive pressure sensor (barometer) from Jet Propulsion Laboratory (JPL).[4][5]

Wind, temperature, pressure and magnetometer data is used to understand the local wind behavior at the landing site to help understand and interpret SEIS data.[6] At the same time, the lander uses its cameras to document cirrus clouds that develop high above Elysium Planitia, any instances of fog that appear along the ground, as well as dust devils.[7] With this data, scientists are able to gain even greater insights into Mars' weather and climate, supplementing what was collected by previous missions, and what is currently being gathered by the Curiosity rover about 600 km to the south.[7]

## Auxiliary Payload Sensor Suite (APSS)

TWINS on InSight is part of what is called the Auxiliary Payload Sensor Suite, forming a "weather station" which components include:[6]

* TWINS: Temperature and wind sensor developed by the Spanish Astrobiology Center (CAB), Madrid, Spain
* IFG: InSight FluxGate magnetometer, developed by the University of California at Los Angeles (UCLA) ay USA
* PS: Pressure sensor developed by the TAVIS company at USA
* PAE: Electronics controlling the TWINS, PS and IFG sensors developed by JPL

## See also

* Atmosphere of Mars
* Climate of Mars
* Geology of Mars
* Rover Environmental Monitoring Station, on board the Curiosity rover

## References

1. ↑ Clark, Stephen (19 December 2013). "Mars lander to launch from California on Atlas 5 in 2016". Spaceflight Now. http://www.spaceflightnow.com/news/n1312/19insight/.
2. ↑ The TWINS Instrument On Board Mars Insight Mission Velasco, Tirso, and Rodríguez-Manfredi, Jose A., EGU General Assembly 2015, held 12–17 April 2015 in Vienna, Austria. id.2571. April 2015
3. ↑ 3.0 3.1 Atmospheric Science with InSight Spiga, A., Banfield, D., Teanby, N.A. et al., Space Science Reviews 2 October 2018 214:109 doi:10.1007/s11214-018-0543-0
4. ↑ David, Leonard (15 August 2014). "NASA's Next Mars Lander Will Peer Deep Into Red Planet's History: Here's How". Space.com. http://www.space.com/26820-nasa-mars-insight-mission-planet-history.html.
5. ↑ Banerdt, W. Bruce (7 March 2013). "InSight: A Geophysical Mission to a Terrestrial Planet Interior". Committee on Astrobiology and Planetary Science, 6–8 March 2013, Washington, D.C.. http://sites.nationalacademies.org/cs/groups/ssbsite/documents/webpage/ssb_086912.pdf.
6. ↑ 6.0 6.1 Operations of the SEIS Seismometer Onboard the 2016 Mars InSIght Mission Charles Yana, Aurélie Moussi, Agnès Jullien1. SpaceOps Conferences 16–20 May 2016, Daejeon, Korea doi:10.2514/6.2016-2592 Copyright by CNES. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission
7. ↑ 7.0 7.1 NASA InSight to give us our best look yet at Mars weather The Weather Network 22 November 2018

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InSight

Payload|

* Heat Flow and Physical Properties Package (HP3)
* Seismic Experiment for Interior Structure (SEIS)
* Rotation and Interior Structure Experiment (RISE)
* Mars Cube One (flyby relay ('bent pipe' communication))
* Auxiliary Payload Sensor Suite
* Temperature and Winds for InSight (TWINS)
* Pressure Sensor & Inlet
* Magnetometer
* PAE
* Instrument Deployment System

Landing site|

* Planet Mars
* Elysium quadrangle
* Elysium Planitia

Launch related|

* Vandenberg AFB Space Launch Complex 3 (Launchpad)
* Atlas V (Launch Vehicle)
* Centaur (2nd stage)

Related|

* Discovery Program
* Deep Space Network (DSN)
* Mars landing
* Marsquake
* Exploration of Mars
* Mars flyby
* Mars InSight Roadshow

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