Cape Canaveral Space Launch Complex 20

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Space Launch Complex 20
Titan IIIA.jpg
SLC-20 in September 1964, during the inaugural launch of the Titan IIIA
Cape Canaveral Space Launch Complex 20
Launch site Cape Canaveral Space Force Station
Location 28°30′44″N80°33′24″W / 28.5122°N 80.5567°W / 28.5122; -80.5567
Time zone UTC−05:00 (EST)
 Summer (DST)
UTC−04:00 (EDT)
Short nameSLC-20
Operator United States Space Force (owner)
Space Florida (tenant)
Firefly Aerospace (subtenant)
Total launches29
Launch pad(s)1
Orbital inclination
range
28° - 57°
Launch history
StatusInactive
First launchJuly 1, 1960
HGM-25A Titan I
Last launchDecember 13, 2000
Super Loki
Associated
rockets
Future: Firefly Alpha, Eclipse
Retired: Titan I, Titan IIIA, Starbird, Prospector, Aries, LCLV, Super Loki
Cape Canaveral Space Launch Complex 20
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4km
2.5miles
28
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27
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26
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25
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24
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23
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22
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21
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20
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19
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18
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17
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16
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15
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14
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13
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12
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11
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10
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9
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8
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7
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6
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5
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4
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3
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2
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  Active pads
  Active pads not used for launches
  Inactive leased pads
  Inactive unleased pads
1
LC-39B
2
LC-39A
3
LC-48
4
SLC-41
5
SLC-40
6
LC-47
7
SLC-37
8
LC-34
9
SLC-20
10
LC-19
11
LC-16
12
LC-15
13
LC-14
14
LC-13 (LZ-1 & LZ-2)
15
LC-12
16
LC-11
17
LC-36
18
LC-1, LC-2, LC-3, and LC-4
19
SLC-46
20
LC-21 and LC-22
21
LC-31 and LC-32
22
LC-18
23
SLC-17
24
LC-26
25
LC-5 and LC-6
26
LC-30
27
LC-25
28
LC-29

Space Launch Complex 20 (SLC-20) is a launch site at Cape Canaveral Space Force Station, Florida. It is the northernmost launchpad in Missile Row, located at the northern terminus of ICBM Road between Launch Complex 19 and Launch Complex 34.

Contents

Originally designated as Launch Complex 20 (LC-20) by the United States Air Force, SLC-20 was historically built for launching the HGM-25A Titan I in ICBM tests, and subsequently saw use by the Titan IIIA and various sounding rockets. The pad is currently leased to Firefly Aerospace for future use by their Firefly Alpha and Eclipse launch vehicles.

History

Launch Complex 20 was constructed by the United States Air Force in the late 1950s for the Titan I missile program, alongside LC-19, LC-16, and LC-15 to the south. The pad saw use in this initial configuration in 1960 and 1961, being the site of 16 Titan I launches within that period. LC-20 would later see a brief period of inactivity with the Titan I's replacement by the LGM-25C Titan II, of which only LC-15 and 16 were used for missile tests.

LC-20 and the adjacent LC-19 were modified in 1963 as part of experimentation with the Titan family to allow for orbital launches. NASA utilized LC-19 to launch the Titan II GLV as part of Project Gemini, while LC-20 was worked by the Air For the Titan III program, being used to launch the Titan IIIA and its Transtage third stage. In 1964 and 1965, the launch site was used four times by the Titan IIIA, [1] with three of them being successful. To date, these launches are the only ones out of LC-20 to reach low Earth orbit.

Following being mothballed for two decades, LC-20 saw life with further modifications in the late 1980s for the Starbird launch vehicles [2] associated with the shuttle Starlab mission. [3] From 1990 to 1994, the facility saw five launches, all of them being sounding rockets. LC-20 was deactivated in 1996.

In 1999, the site was re-activated to support new launch facilities under the direction of Space Florida for commercial launches. The re-activation included upgrades to Launch Pad A and the construction of a new building along the perimeter road, northeast of the blockhouse. [4] The next year, the pad hosted the launch of two Super Loki sounding rockets.

In 2006, the site was being used by NASA's Advanced Technology Development Center (ATDC), a research and development project to provide infrastructure to test, demonstrate and qualify new spaceport technologies. The site was shared with the Florida Air National Guard. [5]

In February 2019, Space Florida leased the site to Firefly Aerospace so that they could launch their Alpha and Beta (since renamed to Eclipse) launch vehicles from the Space Coast's Eastern Range on prograde launch azimuths, being renamed SLC-20 to follow similar rebrandings of pads such as SLC-40 and SLC-41. To support upcoming operations at Cape Canaveral, Firefly plans to develop both manufacturing facilities at a nearby Space Florida business park as well as the launch site. This compliments a similar lease arrangement made with the military for SLC-2W at Vandenberg Space Force Base as a launch site used for polar orbital trajectories. [6] [7] As SLC-2W had a much more active history of being used as a launch pad (being the Western Range site of the Delta II), Firefly opted to prioritize work on there over SLC-20, seeing the maiden flight of the Alpha in September 2021.

In 2024 Firefly indicated they were maintaining their lease at SLC-20 while prioritizing Wallops Pad 0A at the Mid-Atlantic Regional Spaceport as their first East Coast launch site, [8] primarily due to their partnership with Northrop Grumman in the development of the Antares 330 and Eclipse, also planned to be launched from LP-0A.

Launch statistics

3
6
9
12
15
1960
1965
1990
1995
2000
2025

Titan

All launches operated by the United States Air Force.

No.DateTime (UTC)Launch vehiclePayloadResultRemarks
11 July 196017:29 HGM-25A Titan I Suborbital testFailureFirst launch from LC-20. Broken hydraulic line resulted in loss of control, leading to range safety protocols being activated 11 seconds after launch.
228 July 196021:38 HGM-25A Titan I Suborbital testFailure Liquid oxygen valve accidentally closed, leading to loss of thrust and premature engine shutdown.
330 August 1960Unknown HGM-25A Titan I Suborbital testSuccessFirst successful launch from LC-20.
47 October 196015:50 HGM-25A Titan I Suborbital testSuccess
520 December 1960Unknown HGM-25A Titan I Suborbital testFailureSecond stage gas generator failed to start.
610 February 196105:55 HGM-25A Titan I Suborbital testSuccess
73 March 1961Unknown HGM-25A Titan I Suborbital testFailureSecond stage suffered from turbopump failure.
831 March 196119:42 HGM-25A Titan I Suborbital testFailureFirst stage suffered from turbopump failure.
923 May 1961Unknown HGM-25A Titan I Suborbital testSuccess
1021 July 196102:00 HGM-25A Titan I Suborbital testSuccess
114 August 1961Unknown HGM-25A Titan I Suborbital testSuccess
127 September 196101:30 HGM-25A Titan I Suborbital testSuccess
1329 September 196101:52 HGM-25A Titan I Suborbital testSuccess
1424 October 196123:28 HGM-25A Titan I Suborbital testSuccess
1522 November 196100:30 HGM-25A Titan I Suborbital testSuccess
1613 December 1961Unknown HGM-25A Titan I Suborbital testSuccessFinal Titan I flight from LC-20.
171 September 196415:00 Titan IIIA N/AFailureMaiden flight of the Titan IIIA and of the Titan III subfamily. Test flight of the Transtage upper stage. Transtage failed to pressurize, causing premature cutoff and failure to reach orbit.
1810 December 196416:52 Titan IIIA N/ASuccessTest flight of the Transtage upper stage. First successful Titan III launch, and first successful orbital launch from LC-20.
1911 February 196515:19 Titan IIIA LES-1 Success
206 May 196515:00 Titan IIIA LES-2 and LCS-1 SuccessFinal launch of the Titan IIIA and last Titan launch from LC-20.

Sounding rockets

Launches from 1990 to June 1991 operated by Orbital Sciences Corporation. Launches from then to 1993 operated by the Strategic Defense Initiative. Launches in 2000 operated by Space Florida.

No.DateTime (UTC)Launch vehiclePayloadResultRemarks
2118 December 199003:37Starbird LACE UVPI targetSuccessTarget rocket used to demonstrate tracking for anti-missile technology as part of the Strategic Defense Initiative. First sounding rocket launch from LC-20.
2218 June 199111:34ProspectorJoust-1FailureUniversity-sponsored microgravity mission, containing various material and biological experiments. Mission failed, reaching an altitude of 0.6 km (1 mi).
2320 August 199109:45 Aries Red Tigress 1AFailureTarget rocket used to demonstrate tracking for anti-missile technology. Mission failed, only reaching an altitude of 2 km (1.2 mi).
2414 October 199110:17 Aries Red Tigress 1BSuccessTarget rocket used to demonstrate tracking for anti-missile technology.
2523 May 199309:17LCLVRed Tigress 2ASuccessTarget rocket used to demonstrate tracking for anti-missile technology.
2628 May 199308:34LCLVRed Tigress 2BSuccessTarget rocket used to demonstrate tracking for anti-missile technology.
2721 January 200016:22 Super Loki Educational test flightSuccess
2812 December 200020:00 Super Loki Educational test flightSuccess
2913 December 200016:00 Super Loki Educational test flightSuccessMost recent launch from LC-20.

Notes

  1. "STATEMENT OF BASIS SPACE LAUNCH COMPLEX 20" (PDF). PDF. The United States Environmental Protection Agency. Archived from the original (PDF) on October 8, 2006. Retrieved January 2, 2007.
  2. "Launch Complex 20". Cape Canaveral Space Force Museum. Retrieved March 18, 2023.
  3. "The Cape, Chapter 3, Section 9 STARBIRD and RED TIGRESS Operations". Federation of American Scientists. Retrieved March 18, 2023.
  4. "DRAFT Environmental Assessment for the Reconstitution and Enhancement of Space Launch Complex 20 Multi-User Launch Operations at Cape Canaveral Air Force Station Florida" (PDF). September 2020. p. 1-3. Retrieved March 18, 2023.
  5. "About ATDC". web. NASA. Archived from the original on December 8, 2006. Retrieved January 2, 2007.
  6. Loren Grush (February 22, 2019). "Resurrected Firefly Aerospace will take over a launch site at busy Florida spaceport". The Verge. Retrieved March 18, 2023.
  7. Berger, Eric (February 22, 2019). "Firefly planning a major rocket assembly and launch facility in Florida". Ars Technica.
  8. "Firefly preparing new launch pads in Virginia, Sweden for Alpha rocket". September 12, 2024.