Editing Strypi

[[File:Strypi 1962.jpg|thumb|Launch of one of Sandia’s Strypi rockets in 1962]]
'''Strypi''' is a family of US re-entry vehicle test boosters, anti-missile targets and [[sounding rocket|sounding rockets]]. They use a [[Castor (rocket stage)|Castor]] first stage with two Recruit [[Booster (rocketry)|strap-on boosters]], plus a range of upper stages.<ref name=":1">{{Cite web |title=Strypi |url=http://www.astronautix.com/s/strypi.html |access-date=2025-01-15 |website=www.astronautix.com}}</ref> It is 31 inches (79 centimeters) in diameter, and has a maximum flight height of 124 miles (200 kilometers).

== History ==
It was originally designed and built in 1962 by teams from the [[Sandia National Laboratories]] in an around-the-clock program that was a part of a larger nuclear weapons testing program, undertaken prior to the imposition of the [[Partial Test Ban Treaty|Limited Test Ban Treaty]] (LTBT) in October, 1963. It was designed to take a nuclear warhead into space for extra-atmospheric testing. Though it performed this function only once, in [[Operation Fishbowl#Checkmate|Test Checkmate]] of [[Operation Fishbowl]], it became the "workhorse" of Sandia's rocket research program.<ref name="sandia1">{{cite web |title=Readiness Program |url=http://www.sandia.gov/recordsmgmt/exhibits/ReadinessProgram.pdf |url-status=dead |archive-url=https://web.archive.org/web/20060927064133/http://www.sandia.gov/recordsmgmt/exhibits/ReadinessProgram.pdf |archive-date=2006-09-27 |access-date=2007-03-22 |publisher=Sandia National Laboratories |page=3 |format=PDF}}</ref> The rocket's name came from the efforts of the Sandia teams, which had "taken the tiger by the tail".<ref name="sandia1" />

In 1968, a modified Strypi was used in Material Test Vehicle (MTV) booster tests. Although atmospheric nuclear testing was now banned, as a part of the [[Test Readiness Program]] the [[U.S. Air Force]] continued to develop the means of testing, should the ban be lifted.<ref name="sandia1"/>

==Versions==
Several versions of Strypi were developed, maintaining the original Recruit and Castor first and second stages or adding a third stage.<ref name=":0">{{Cite web |title=Sergeant / Castor (boosted) with upper stages |url=https://space.skyrocket.de/doc_lau/sergeant_boost_up.htm |access-date=2025-01-15 |website=Gunter's Space Page |language=en}}</ref><ref name=":1" />
{| class="wikitable sortable"
|+Strypi versions<ref name=":0" /><ref name=":1" />
!Version
!First Launch
!Last Launch
!Flights
!Booster
!Stage 1
!Stage 2
!Stage 3
|-
|'''Strypi Antares'''
|1962-07-09
|1962-10-20
|7
|2 × Recruit
|[[Castor 1|Castor-1]]
| -
| -
|-
|'''Strypi-2'''
| colspan="2" |1979-11-13
|1
|2 × Recruit
|Castor-1
| -
| -
|-
|'''Strypi-2R'''
| colspan="2" |1974-11-03
|1
|2 × Recruit
|Castor-1
| -
| -
|-
|'''Strypi-2AR'''
| colspan="2" |1974-02-07
|1
|2 × Recruit
|[[Castor-2]]
| -
| -
|-
|'''Strypi-4'''
| colspan="2" |1966-09-01
|1
|2 × Recruit
|Castor-1
|[[Star (rocket stage)#Star 26|Star-26]]
| -
|-
|'''Strypi-4A'''
| colspan="2" |1974-03-23
|1
|2 × Recruit
|Castor-1
|[[Star (rocket stage)#Star 26|Star-26]]
| -
|-
|'''Strypi-4R'''
| colspan="2" |1976-06-07
|1
|2 × Recruit
|Castor-1
|Star-26
| -
|-
|'''Strypi-6'''
|1968-11-01
|1970-06-01
|3
|2 × Recruit
|Castor-1
|?
|?
|-
|'''Strypi-7R'''
|1975-03-11
|1975-09-18
|2
|2 × Recruit
|Castor-1
|[[Alcor (rocket engine)|Alcor-1B]]
|Alcyone IA BE-3
|-
|'''Strypi-7AR'''
|1972-10-15
|1974-10-01
|2
|2 × Recruit
|Castor-2
|[[Alcor (rocket engine)|Alcor]]
|Alcyone IA BE-3
|-
|'''Strypi-9'''
|1995-06-26
|1995-06-29
|2
|2 × Recruit
|Castor-1
|[[Antares 2|Antares-2A]]
| -
|-
|'''Strypi-11'''
|1987-01-01
|1991-02-18
|4
|2 × Recruit
|Castor-1
|Antares-2A
|[[Star-27]]
|-
|'''Strypi-12R'''
|1997-02-10
|1997-10-04
|2
|2 × Recruit
|Castor-1
|Orbus-1
| -
|-
|'''Strypi Tomahawk'''
|
|
|
|2 × Recruit
|Castor-1
|?
|[[Tomahawk (missile family)|Tomahawk]]
|}

== Derivatives ==
{{Main|SPARK (rocket)}}
The [[SPARK (rocket)|SPARK]], also known as the Super Strypi, is a three-stage derivative of the Strypi powerful enough to place a 250&nbsp;kg payload into [[Sun-synchronous orbit]]. The Super Strypi was first launched on 3 November 2015, although on that test the first stage failed soon after lift-off.<ref>{{Cite web |title=Super Strypi |url=http://www.astronautix.com/s/superstrypi.html |access-date=2025-01-15 |website=www.astronautix.com}}</ref>

==References==
{{Reflist}}

==External links==
*[https://web.archive.org/web/20030904135708/http://astronautix.com/lvs/strypi.htm Article title]

[[Category:Sounding rockets of the United States]]
[[Category:Sandia National Laboratories]]


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