Demonstration and Science Experiments

DSX

Artist rendering of the Air Force Research Laboratory Demonstration and Science Experiments (DSX) spacecraft on-orbit with its 80-meter and 16-meter antenna booms extended.

Names| Demonstration and Science Experiments
Deployable Structures Experiment
Mission type| Technology demonstration
Operator| Air Force Research Laboratory
COSPAR ID| 2019-036F
SATCAT no.| 44344
Website| https://www.afrl.af.mil/
Mission duration| 1 year (planned)
1 year, 11 months and 6 days (achieved)
Spacecraft properties
Bus| ESPA ring \+ 2 SN-200
Manufacturer| Sierra Nevada Corporation
(formerly MicroSat Systems)
Start of mission
Launch date| 25 June 2019, 06:30:00 UTC
Rocket| Falcon Heavy (No. 003)
Launch site| Kennedy Space Center, LC-39A
Contractor| SpaceX
End of mission
Disposal| Passivated
Deactivated| 31 May 2021
Orbital parameters
Reference system| Geocentric orbit[1]
Regime| Medium Earth orbit
Perigee altitude| 5,988 km (3,721 mi)
Apogee altitude| 12,051 km (7,488 mi)
Inclination| 42.3°
Period| 316.9 minutes
Instruments
Wave Particle Interaction Experiment (WPIx)
Space Weather Experiment (SPx)
Space Environmental Effects Experiment (SFx)
Adaptive Controls Experiment (ACE)

Demonstration and Science Experiments (DSX) was a small spacecraft developed by the U.S. Air Force Research Laboratory's Space Vehicles Directorate to perform experiments to study the radiation environment in medium Earth orbit.[2][3]

## Contents

* 1 Spacecraft
* 2 Payload
* 3 Mission
* 4 References
* 5 Initial visibility
* 6 TemplateData
* 7 Template transclusions
* 8 Initial visibility
* 9 TemplateData

## Spacecraft

The Air Force Research Laboratory (AFRL) is responsible for the development and execution of the DSX (originally Deployable Structures Experiment), now Demonstration & Science Experiments, also known as Space Science Technology Experiment (SSTE-4), a suite of four science payloads integrated onto a Evolved Expendable Launch Vehicle (EELV) EELV Secondary Payload Adapter (ESPA) ring based three axis stabilized satellite bus nominally slated for launch into a 6000 × 12000 km, 30° inclination, Medium Earth Orbit (MEO) in the 2019 timeframe with one year required and three year desired operational capability.[4]

Unlike the traditional ESPA approach, in DSX the experiments and host spacecraft stay attached and do not deploy. After the primary satellite in the EELV is deployed, the DSX ESPA separates from the EELV 2nd stage booster to become a free-flyer spacecraft. To address the space access aspect of the rapid-response problem, DSX will utilize an EELV Secondary Payload Adapter (ESPA) capability as a platform for highly-capable small and medium free-flying satellites (or ESPASats) that have plentiful and relatively inexpensive launch opportunities on EELV as secondary payloads.[4]

One deployable boom measured 80 meters and a second measured 16 meters, making DSX one of the largest deployable structures built to operate on orbit.[2]

## Payload

DSX conducted four experiments:

* Wave Particle Interaction Experiment (WPIx)
* Space Weather Experiment (PWx)
* Space Environmental Effects Experiment (SFx)
* Adaptive Controls Experiment (ACE)

## Mission

AFRL kept the satellite in operation for nearly two years, rather than the one year planned, using it to conduct more than 1,300 experiments.[5][2]

The DSX mission was successfully completed on 31 May 2021. The spacecraft was passivated rather than deorbited due to its high orbit.[2]

## References

1. ↑ Peat, Chris (14 July 2021). "DSX". Heavens Above. https://www.heavens-above.com/orbit.aspx?satid=44344.
2. ↑ 2.0 2.1 2.2 2.3 Erwin, Sandra (19 July 2021). "Air Force satellite completes two-year experiment to study the medium Earth orbit environment". SpaceNews. https://spacenews.com/air-force-satellite-completes-two-year-experiment-to-study-the-medium-earth-orbit-environment/.
3. ↑ "Sierra Nevada Science Missions". Sierra Nevada Corporation. http://www.microsatsystems.com/ss_spacecraft_science.php#dsx.
4. ↑ 4.0 4.1 "Display: DSX 2019-036F". NASA. 27 April 2021. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=2019-036F. This article incorporates text from this source, which is in the public domain.
5. ↑ "AFRL conducts 1,300 experiments on record-breaking satellite". AFRL. 19 July 2021. https://www.afrl.af.mil/News/Article/2697933/afrl-conducts-1300-experiments-on-record-breaking-satellite/. This article incorporates text from this source, which is in the public domain.

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U.S. Air Force Research Laboratory (AFRL) spacecraft and air vehicles

Launch/orbital vehicles|

* X-33 Venture Star (canceled)
* HTV-3X Blackswift (canceled)
* X-37 Orbital Test Vehicle
* X-40A Space Maneuver Vehicle
* X-51A WaveRider

University Nanosat Program|

* Program
* 3CS
* FASTRAC
* CUSat
* DANDE

Space weather satellites|

* ARGOS
* TSX-5
* Coriolis
* C/NOFS
* DSX

Technology demonstrators|

* TAOS
* MightySat-1
* MightySat-2
* XSS-10
* TechSat-21 (canceled)
* XSS-11
* ISAT
* PnPSat-1 (canceled)
* ANGELS

Tactical Satellite Program satellites|

* TacSat-1
* TacSat-2
* TacSat-3
* TacSat-4
* TacSat-5

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SpaceX rocket launches

SpaceX launch vehicles|

* Falcon 1
* Falcon 9
* v1.0
* v1.1
* Full Thrust
* Block 5
* Falcon Heavy

Falcon 1 missions|

* Demo 1† (FalconSAT-2)
* Demo 2†
* Flight 3†
* Trailblazer
* PRESat
* NanoSail-D
* Explorers
* Ratsat
* RazakSAT

Falcon 9 missions|

| Demonstration flights|

* Dragon Spacecraft Qualification Unit
* NASA COTS Demo Flight 1
* Dragon C2+
* Crew Dragon Demo-1
* Crew Dragon in-flight abort test

|

Dragon ISS logistics|

* CRS-1
* CRS-2
* CRS-3
* CRS-4
* CRS-5
* CRS-6
* CRS-7†
* CRS-8
* CRS-9
* CRS-10
* CRS-11
* CRS-12
* CRS-13
* CRS-14
* CRS-15
* CRS-16
* CRS-17
* CRS-18
* CRS-19
* CRS-20
* CRS-21
* CRS-22
* (missions contracted up to CRS-26)

Dragon 2 crewed missions|

* Crew Dragon Demo-2
* USCV-1
* Bigelow Crew 1

Commercial satellites|

* SES-8
* Thaicom 6
* Orbcomm OG2 × 6
* AsiaSat 8
* AsiaSat 6
* ABS-3A / Eutelsat 115 West B
* TürkmenÄlem 52°E
* Orbcomm OG2 × 11
* SES-9
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* ABS-2A / Eutelsat 117 West B
* JCSAT-16
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* SES-11
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* Iridium NEXT 66–75
* Nusantara Satu \+ Beresheet
* Amos 17
* JCSAT-18
* SXM 7
* SXM 8
* Türksat 5A

Scientific satellites|

* CASSIOPE
* DSCOVR
* Jason-3
* Formosat-5
* TESS
* GRACE-FO
* SAOCOM 1A
* RADARSAT Constellation
* SAOCOM 1B
* Hakuto-R
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Military satellites|

* NROL-76
* X-37B OTV-5
* Zuma
* SES-16 / GovSat-1
* Paz
* GPS IIIA-01
* ANASIS-II
* GPS IIIA-03
* GPS IIIA-04
* GPS IIIA-05
* SARah 1
* GPS IIIA-06
* SARah 2/3

Starlink constellation|

* 2019
* Starlink group 0
* 1
* 2020
* Starlink group 2
* 3
* 4
* 5
* 6
* 7
* 8
* 9

Rideshares|

* 2021
* Mission 1
* 2022
* Mission 2
* 2023
* Mission 3

Falcon Heavy missions|

* Test flight
* Tesla Roadster
* Arabsat-6A
* USAF STP-2
* DSX
* FormoSat-7
* LightSail 2
* GPIM
* DSAC
* ISAT
* AFSPC-44
* AFSPC-52
* ViaSat-3 class

* Italics indicate future missions and vehicles under development. † denotes failed missions and destroyed vehicles.

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Orbital launches in 2019

January|

* ChinaSat-2D
* Iridium NEXT 66–75
* Payam-e Amirkabir†
* RAPIS-1, ALE-1, RISESAT, MicroDragon, AOBA-VELOX-IV, NEXUS, OrigamiSat-1
* USA-290 (NROL-71 / Kennen)
* Jilin-1 Hyperspectral × 2, Xiaoxiang 1-03, Lingque 1A
* Microsat-R, Kalamsat

February|

* Dousti†
* GSAT-31, SaudiGeoSat-1 / HellasSat-4
* EgyptSat A, Helios Wire 4
* Nusantara Satu / PSN 6, Beresheet, S5
* OneWeb x6

March|

* Crew Dragon Demo-1
* ChinaSat-6C
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* WGS-10
* PRISMA
* Lingque 1B†
* "Two Thumbs Up" (R3D2)
* Tianlian II-01

April|

* EMISAT, Aistechsat-3, Astrocast 0.2, BlueWalker 1, Flock-4a × 20, Lemur-2 × 4, M6P
* Progress MS-11
* O3b FM17–FM20
* Arabsat-6A
* Cygnus NG-11
* BeiDou-3 I1
* Tianhui 2-01A, Tianhui 2-01B

May|

* SpaceX CRS-17
* "That's a Funny Looking Cactus"
* BeiDou-2 G8
* RISAT-2B
* Yaogan 33†
* Starlink 0 (60 satellites)
* GLONASS-M 758
* Yamal-601

June|

* Bufeng-1A, Bufeng-1B, Jilin-1, Tianqi-3, Tianxiang-1A, Tianxiang-1B, Xiaoxiang 1-03
* RADARSAT Constellation × 3
* Eutelsat 7C, AT&T T-16
* BeiDou-3 I2Q
* STP-2
* "Make It Rain" (BlackSky Global 3, Prometheus × 2, ACRUX-1, SpaceBEE 8 & 9)

July|

* Meteor-M 2-2
* Kosmos 2535, Kosmos 2536, Kosmos 2537, Kosmos 2538
* Falcon Eye 1†
* Spektr-RG
* Soyuz MS-13
* Chandrayaan-2
* Vikram
* Pragyan
* CAS-7B
* SpaceX CRS-18
* Yaogan x3
* Meridian 8
* Progress MS-12

August|

* Blagovest-14L
* EDRS-C / HYLAS-3
* Amos-17
* AEHF-5
* Tianqi-2, Qian Sheng-1 01 / Xingshidai-5
* Chinasat 18
* "Look Ma, No Hands"
* BlackSky Global 4
* BRO 1
* Pearl White × 2
* Soyuz MS-14
* GPS IIIA-02
* Nahid-1†
* Geo-IK-2 No.3
* Taiji-1, Xiaoxiang 1-07

September|

* Ziyuan I-02D, Ice Pathfinder, Taurus 1
* Zhuhai-1 x2
* BeiDou-3 M23, M24
* HTV-8
* Yunhai-1 02
* Soyuz MS-15
* EKS-3

October|

* Gaofen 10R
* Eutelsat 5 West B, MEV-1
* ICON
* "As The Crow Flies"
* Palisade
* TJSW-4

November|

* Cygnus NG-12
* Gaofen 7
* BeiDou-3 I3Q
* Starlink 1 (60 satellites)
* Jilin-1 Gaofen-02A
* Ningxia-1 (Zhongzi) ×5
* KL-Alpha A, B
* BeiDou-3 M21, M22
* Kosmos 2542, Kosmos 2543
* Inmarsat-5 F5 (GX5), TIBA 1
* Cartosat-3
* Gaofen 12

December|

* SpaceX CRS-19
* "Running Out Of Fingers"
* Progress MS-13
* Jilin-1 Gaofen-02B
* HEAD-2A, HEAD-2B
* GLONASS-M 759
* RISAT-2BR1, Izanagi
* BeiDou-3 M19, M20
* JCSAT-18 / Kacific 1
* CHEOPS, COSMO-SkyMed, OPS-SAT, EyeSat, ANGELS
* CBERS 4A / Ziyuan I-04A
* Starliner Boe-OFT
* Elektro-L No.3
* Gonets-M 14, 15, 16, BLITS-M
* Shijian 20

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Microsoft security products

Numbers in brackets are the years of the initial release of the product.

For Windows|

* Windows Firewall [2001]
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* Microsoft Safety Scanner [2011]

For Windows Server|

* Exchange Online Protection [2007]
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Discontinued|

* MSAV [1993]
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* OneCare Safety Scanner [2006]
* Unified Access Gateway [2007]
* Windows Live OneCare [2006]
* RootkitRevealer [2006]
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Related topics|

* Data Execution Prevention
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