Aboilerplate spacecraft, also known as amass simulator, is a nonfunctional craft orpayload that is used to test various configurations and basic size, load, and handling characteristics of rocketlaunch vehicles. It is far less expensive to build multiple, full-scale, non-functional boilerplatespacecraft than it is to develop the full system (design, test, redesign, and launch). In this way, boilerplate spacecraft allow components and aspects of cutting-edgeaerospace projects to be tested while detailed contracts for the final project are being negotiated. These tests may be used to develop procedures for mating a spacecraft to its launch vehicle, emergency access and egress, maintenance support activities, and various transportation processes.

Boilerplate spacecraft are most commonly used to test crewed spacecraft; for example, in the early 1960s,NASA performed many tests using boilerplateApollo spacecraft atopSaturn I rockets, andMercury spacecraft atopAtlas rockets (for exampleBig Joe 1). The engine-lessSpace ShuttleEnterprise was used as a boilerplate to test launch stack assembly and transport to the launch pad. NASA's now-canceledConstellation program and ongoingArtemis program used boilerplateOrion spacecraft for various testing.

Mercury boilerplates were manufactured "in-house" byNASA Langley Research Center technicians prior toMcDonnell Aircraft Company building theMercury spacecraft. The boilerplate capsules were designed and used to test spacecraft recovery systems, and escape tower androcket motors. Formal tests were done on the test pad at Langley and atWallops Island using theLittle Joe rockets.^[1][2]

The termboilerplate originated from the use ofboilerplatesteel^[3] for the construction of test articles/mock-ups. Historically, during the development of the Little Joe series of 7 launch vehicles, there was only one actual boilerplate capsule and it was called such since its conical section was made of steel at theNorfolk Naval Shipyard. This capsule was used in a beach abort test, and then subsequently used in theLJ1A flight. However, the term subsequently came to be used for all theprototype capsules (which in their own right were nearly as complicated as the orbital capsules). This usage was technically incorrect, as those other capsules were not made of boilerplate, but theboilerplate term had effectively beengenericized.^{[citation needed]}

Section sources.^[4][5]

• 1959 July 22 – First successful pad abort flight test with a functional escape tower attached to a Mercury boilerplate.
• 1959 July 28 – A Mercury boilerplate with instrumentation to measure sound pressure levels and vibrations from the Little Joe test rocket and Grand Central abort rocket/escape tower.
• 1959 September 9 – A Big Joe Atlas boilerplate Mercury (BJ-1) was successfully launched and flown from Cape Canaveral. This test flight was to determine the performance of the heat shield and heat transfer to the boilerplate, to observe flight dynamics of boilerplate during re-entry into the South Atlantic, to perform and evaluate capsule flotation and recovery system procedures, and to evaluate the entire capsule and rocket characters and system controls.^[6]
• 1960 May 9 –Beach Abort test with a launch escape system was successful.
• 1961 February 25 – A successful drop test of the Mercury boilerplate spacecraft fitted with impact skirt, straps and cables, and a heat shield.^[7]
• 1961 March 24 – A successfulMercury-Redstone BD (MR-3) launched occurred with an apogee of 181 km (112 mi); first sub-orbital uncrewed flight.^[7]

There were seven specifically named Gemini boilerplates: BP-1, 2, 3, 3A, 4, 5 and 201.^[8]Boilerplate 3A had functional doors and had multi-uses for testing watertightness, flotation collars, and egress procedures.^{[citation needed]} Other boilerplates were designated FA-1A, MSC 312, MSC 313 and MSC-307.^[8]

NASA created a variety of Apollo boilerplates.^[9]

Apollo boilerplate command modules were used for tests of thelaunch escape system (LES) jettison tower rockets and procedures:

• BP-6 withPad Abort Test-1 – LES pad abort test from launch pad; with photo.^{[citation needed]}
• BP-23A withPad Abort Test-2 – LES pad abort test of near Block-I CM; with photo.^{[citation needed]}
• BP-23 with MissionA-002 Test Flight – LES test of canards, Oct. 29-Nov. 5, 1964.^[10]
• BP-27 with LES-015 – Dynamic tests.^[11]

• BP-1 – Water impact tests^[11]
• BP-2 – Flotation tests storage^[11]
• BP-3 – Parachute tests^[11]
• BP-6,-6B, – PA-1, later parachute drop test vehicle,^[11] and LES pad abort flight test to demonstrate launch escape system's pad-abort performance at White Sands Missile Range.^[12]
• BP-9 with missionAS-105 (SA-10) test flight, Micro Meteoroid Dynamic Test; not recovered.^[11]
• BP-12 with missionA-001 test flight, now at former NASA Facility, Downey, California^[10] to test the LES transonic abort flight performance at White Sands Missile Range.^[12]
• BP-13 with missionAS-101 (SA-6) test flight, not recovered.^[11]
• BP-14 withenvironmental control system tests, Oct. 22–29, 1964,^[10] consisted of command module 14, service module 3, launch escape system 14, and Saturn launch adapters.^[11]
• BP-15 with missionAS-102 (SA-7) test flight, not recovered.^[11]
• BP-16 with missionAS-103 (SA-9) test flight, another Micro Meteoroid test, not recovered.^[11]
• BP-19A –VHF antenna, parachute drop tests;^[11] now at the Columbia Memorial Space Center (former NASA Facility, Downey, CA)^[13]
• BP-22 with missionA-003 test flight; boilerplate on display at Johnson Space Center, Houston, TX^[14]
• BP-23 – LES high-dynamic-pressure abort flight performance tests at White Sands Missile Range.^[12]
• BP-23A – LES pad-abort flight performance tests with Canard, BPC, and major sequencing changes at White Sands Missile Range,^[12] now displayed withSA-500D at theU.S. Space & Rocket Center,Huntsville, Alabama.^[11]
• BP-25 Command Module (CM) – Water recovery test, atFort Worth Museum of Transportation^[11](See BP-25 photo)
• BP-26 with missionAS-104 (SA-8) test flight – another micro meterioid test.^[11]
• BP-27 command and service module with LES-16 – stack and engine gimbal test.^[11] Now on display atop the vertical Saturn V at theU.S. Space & Rocket Center,Huntsville, Alabama.^[15]
• BP-28A – Impact tests^[11]
• BP-29 – Uprighting drop tests atDowney, CA, Oct. 30, 1964, on display atBarringer Crater,Arizona.^[10][11]
• BP-30 – Swing arm tests; currently on display at Kennedy Space Center's Apollo/Saturn V Center.^[11]

BP-1101A was used in numerous tests to develop spacecraft recovery equipment and procedures. Specifically, 1101A tested the air bags as part of the uprighting procedure when the Apollo lands upside down in the water. The sequence of the bags inflating caused the capsule to roll and upright itself.^[16]

This McDonnell boilerplate is now on loan to theWings Over the Rockies Air and Space Museum,^[17] Denver, Colorado, from the Smithsonian. BP-1101A has an external painted marking of AP.5. Examination of the interior in 2006 revealed large heavy steel ingots.^[18] After further research, a new paint scheme was applied in June 2007.

BP-1102 was used for water egress trainer for all Apollo flights, including by the crew ofApollo 11, the first lunar landing mission. It was also adapted for mock-up interior components and used by astronauts to practice routine and emergency exits from the spacecraft.^{[citation needed]}

It was then modified again where the interior was set up to be configured either as Apollo/Soyuz or a proposed five-personSkylab Rescue vehicle. With these two conversions, astronauts could train for those special missions. It was finally transferred from NASA to the Smithsonian in 1977, and is displayed now at theUdvar-Hazy Center with the flotation collar and bags that were attached toColumbia (the Apollo 11 Command Module) at the end of its historic mission.^[19]

BP-1210 was used in landing and recovery training and to test flotation devices. It is on display outside theStafford Air & Space Museum.^[20]

The purpose of this series design was to simulate the weight and other external physical characteristics of theApollocommand module. Theseprototypes were in the 9000 lb range for both laboratory water tanks and ocean tests. The experiments tested flotation collars, collar installations, and buoyancy characteristics. The Navy trained their recovery personnel for ocean collar installation and shipboard retrieval procedures. These boilerplates rarely had internal equipment.^[21]See BP-1220 photo.

BP-1224 was a component-level flammability-test program to test for design decisions on selection and application of non-metallic materials. Boilerplate configuration comparisons with command and service module 2TV-1 and 101 were performed by North American. The NASA review board decided on February 5, 1967, that the boilerplate configuration had determined a reasonable "worst case" configuration, after more than 1,000 tests were performed.^[22]See BP-1224 photo set.

Details regarding this test capsule are not clear, but most likely it was lost at sea somewhere between theAzores and theBay of Biscay in early 1969, and recovered in June 1969 off Gibraltar by the Soviet fishing trawlerApatit (possibly a Sovietspy ship disguised as such, which was commonplace during theCold War),^{[23][24][25][26]} transferred to the port ofMurmansk in the Soviet Union, and returned to the US in September 1970 by theUSCGCSouthwind.^[27] It is now located inGrand Rapids,Michigan as atime capsule.^[28][29]SeeBP-1227 photo.The only certainties about this capsule are that it was returned to the United States at Murmansk early in September 1970 during a visit by the USCGSouthwind who returned it to the Naval Air Station, Norfolk, Virginia. There it remained until title was passed to the Smithsonian in April 1976 when it was passed on to Grand Rapids, Michigan to serve as a time capsule. Two official sources – the US Navy and the US Coast Guard – both say that it was lost by an ARRS (Aerospace Rescue and Recovery Squadron) unit training in recovery procedures. A contemporary account of its return quotes a NASA spokesman as saying, " ... as far as NASA can determine the object... the Navy lost two years ago."

A Lunar Module (LM) boilerplate, the LM test article, was launched withApollo 8 to simulate the correct weight and balance of the LM which was not ready for the flight.

Thefacilities test mockup is used to test theMate-Demate Device at theShuttle Landing Facility in Florida

TheStructural Test Article undergoing tests at theRockwell facility in California

Enterprise in boilerplate configuration;
Left -Enterprise is lowered into theDynamic Structural Test Facility for the Mated Ground Vibration Tests
Center -Enterprise is mated withET andSRBs to undertake fit-check tests atKSC Pad 39A
Right -Enterprise with ET and SRBs in fit-check tests atSLC-6

As part of theSpace Shuttle program, a number of boilerplate vehicles were constructed using various materials to undertake key tests of procedures, infrastructure and other elements that would take place during a Shuttle mission.

In 1977, theMarshall Space Flight Center (MSFC) constructed asimple steel and wood orbiter mockup to be used in fit check activities for various elements of the infrastructure needed to support the Space Shuttle, including roadway clearances and crane capabilities, as well as for testing in various buildings and structures used as part of the program, both at the MSFC and at theKennedy Space Center. The mockup was designed to be the approximate size, shape and weight of an actual orbiter, and allowed these initial tests to be undertaken without using the far more expensive and delicate prototype orbiter,Enterprise.^[30] Following its use as a test article, the mockup was stored until 1983, when it was refurbished and modified to more closely resemble an actual orbiter, before being displayed inTokyo.^[31]

TheStructural Test Article was built as a test vehicle intended for use in initial vibration testing to simulate entire flights.^[32] The STA was built as essentially a complete orbiter airframe, but with a mockup of the crew compartment installed, and thethermal insulation only fitted to the forward fuselage.^[33] The simulation testing of the STA was undertaken over the course of eleven months following its rollout in February 1978; at the time, it was intended that the prototype orbiterEnterprise would be converted into a full flight ready model, but the cost of undertaking this work, along with a number of design changes that had taken place betweenEnterprise being rolled out, and the final construction of the first operational orbiter,Columbia, meant that it was decided instead to upgrade the STA into a flight model. This began following the end of the STA testing in January 1979, with the completed orbiter, named asChallenger, rolled out in June 1982.^[32]

In January 1977, theprototypeorbiterEnterprise was delivered toEdwards Air Force Base inCalifornia for the beginning of its overall test programme, which would encompass flight tests, fit-check and procedures testing of the orbiter, its systems, the facilities and procedures required to launch, fly and land the spacecraft safely. During 1977,Enterprise was used in what was called theApproach and Landing Tests programme of testing, which encompassed mating the orbiter to theShuttle Carrier Aircraft, a modifiedBoeing 747 to test the taxiing and flight characteristics of the Orbiter / SCA combination. This included flights of the combination in whichEnterprise itself was powered up and crewed, to test crew procedures systems in flight, and finally a set of five so-called "free-flights", withEnterprise jettisoned from the SCA at altitude to land on its own, testing the orbiter's own flying and handling characteristics.^[34]

In March 1978, following its use in flight tests during theALT program,Enterprise was taken to the MSFC inHuntsville, Alabama for use in the Mated Vertical Ground Vibration Test. This would seeEnterprise mated to an emptyExternal Tank and dummySolid Rocket Boosters, creating a boilerplate version of the complete Space Shuttle stack for the first time. Inside theDynamic Structural Test Facility at the MSFC, the stack was subjected to a series of vibration tests simulating the various stages that it would be subjected to during launch.^[35]

Following its use at Huntsville,Enterprise was then taken to theKennedy Space Center in Florida, where she was again used in full boilerplate configuration to this time test the procedures of assembling and transporting the stack from theVehicle Assembly Building toLaunch Complex 39, as well as procedures required upon its arrival at the launch pad.^[36][37] In 1985,Enterprise was used again for this purpose, this time with the boilerplate configuration used to test the Air Force shuttle facilities atVandenberg Air Force Base, including a full mating on theSLC-6 launch pad.^[38]

This section'sfactual accuracy may be compromised due to out-of-date information. The reason given is:This article talks about new technology in 2006, stuff has advanced and the information is outdated and some if it is wrong.. Please help update this article to reflect recent events or newly available information.(November 2024)

The construction of the first Orion boilerplate,^[39] was a basic mockupprototype to test the assembling sequences and launch procedures at NASA'sLangley Research Center while Lockheed aerospace engineers assemble the first rocket motors for the spacecraft's escape tower. The first boilerplate went toDryden Flight Research Center at Edwards, California, for integration of Lockheed's avionics and NASA's developmental flight instrumentation^[40] prior to shipment to New Mexico'sWhite Sands Missile Range for the first Orionpad abort test (PA-1) in 2009. On November 20, 2008 a complete test of the abort rockets took place in Utah.^[41] PA-1 is the first of the six test events in Orion Abort Flight Test subproject.Lockheed Martin Corp. was awarded the contract to build Orion on August 31, 2006.^{[citation needed]}

Other boilerplates would be used to test thermal, electromagnetic, audio, mechanical vibration conditions and research studies. These tests for the Orion spacecraft would be done at Plum Brook Station in the agency's Ohio-basedGlenn Research Center.^[42][43]

This sectionneeds expansion. You can help byadding missing information.(May 2013)

In the 2010s, several commercially designedspace capsules used boilerplate units on the initial launches of newlaunch vehicles.

• TheDragon Spacecraft Qualification Unit was a boilerplate unit launched to orbit on the maiden flight of theSpaceXFalcon 9 rocket, on June 4, 2010. It was built to the outer mold line (OML) and mass distribution of theDragon spacecraft.^[44]
• TheCygnus Mass Simulator was a boilerplate capsule launched to orbit on themaiden flight of theOrbital Sciences CorporationAntares rocket on April 21, 2013. It was built to outer mold line and mass distribution of theCygnus spacecraft.^[45][46]

• Project Mercury
• Project Gemini
• Project Apollo
• DemoSat
• Battleship (rocketry)
• Rendezvous Docking Simulator
• Space ShuttlePathfinder
• Orion Abort Test Booster

• MSNBC:Orion Boilerplate Story(updated: 10:11 a.m. MT, Wed., March. 21, 2007)
• BusinessTech:Orion-Ares Story(posted: 6 September 2006 10:41 am ET)
• NASA Apollo History Archives
• Smithsonian NASM: List of Apollo Boilerplates, missions, and launch vehiclesArchived 2011-08-05 at theWayback Machine

• AAIA:Orion Boilerplate
• NASA Spaceflight:MLAS – the alternative Orion Launch Abort System gains momentum (Orion boilerplate being developed)
• HobbySpace:BP-6 now in California
• List of Mercury Boilerplates
• Orion Boilerplate

• Test spaceflights
• Apollo program
• NASA programs
• Project Gemini
• Project Mercury
• Spacecraft components

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