Questions tagged [testing]

Questions about the procedure of using a piece of equipment to find imperfections or problems.

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Curiosity's powered descent stage test

The landing procedure of Curiosity on Mars has been described as a real challenge in part because of the powered descent stage and sky crane. Indeed the separation of Curiosity with the backshell + ...
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Does anyone have pictures of the “lunodrom” that Russia constructed to test the first rover?

Was reading another question involving the Lunokhod missions and then I stumbled across this wikipedia page which stated: In mid-1968, at the facility KIP-10 or NIP-10 (КИП-10 or НИП-10)[3] in the ...
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Why is SpaceX testing Pad Abort at LC-40 (CCAFS) but Max-Q abort at Vandenberg?

Per SpaceNews article SpaceX has set November 2014 for a Pad Abort test from LC-40 in Florida, and January 2015 for a Max-Q abort test from Vandenberg Airforce Base in California. They have only done ...
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Which ISRO satellite was built in 24 hours?

In the video New ISRO Chief Rocket Man Sivan K, A Farmer's Son, Takes On SpaceX after about 08:33 the interviewer asks ISRO's chairperson Kailasavadivoo Sivan about ...
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What is the Process for Re-certifying Flight Hardware?

I was reading about how we reused the water tanks because they were still within their certified life-time and had two questions: When would a certification become VOID? I'd assume if the water ...
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Why will GOES-R take a whole year for validation?

I've been reading a few things about NOAA's GOES-R satellite, and I noticed this on the GOES-R site: ...will be placed in the 89.5° checkout orbit where it will undergo an extended checkout and ...
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357 views

Why is the SpaceX Pad Abort test starting at ground level?

I cannot find references, but prior to the Pad Abort test, for years, it was stated or implied that the test would take place from a platform at LC-40 that would simulate the height of the first stage ...
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706 views

How has the Dragon v2 been tested before its launch pad abort test?

Dragon of SpaceX has been very successfully tested and used. But Dragon v2 seems to be differently designed and has 8 superdraco engines. Has the v2 been drop tested from a balloon or helicopter? ...
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When SpaceX hot fired the previously used ORBCOMM OG2 first stage, why did they suddenly switch from LC-39A to LC-40?

After the successful ORBCOMM OG2 mission on a Falcon 9 v1.1 Full Thrust (aka 1.2, aka 'just' Falcon 9) and the recovery of its first stage at LZ-1, SpaceX indicated it survived well, and trucked it to ...
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How can SpaceX test SuperDracos whilst hanging off a crane?

NASASpaceFlight.com reports that the DragonFly test vehicle has arrived at McGregor, TX for testing. They discuss that the FAA is limiting them to 80 feet above ground for initial testing. That they ...
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Will the Neumann drive start testing aboard the ISS some time in 2018?

The 2016 Daily Mail article Radical ion rocket engine that could 'get to Mars and back on one tank of fuel' set to be tested on the ISS says: Neumann Drive achieves more than 11,000 seconds of ...
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Why was ISRO's CARE reentry demonstration at 5300 m/s so slow?

This community wiki answer to What are some details of ISRO's Gaganyaan Mission currently says: Crew Module Atmospheric Re-entry Experiment (CARE) was launched on 18 December 2014 at 04:00 UTC. ...
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What is this structure at the SpaceX McGregor, TX test site?

After an overflight of the McGregor site, in a thread at NASA Space Flight.com someone noticed an interesting structure: The theory being presented is that the size and hexagon pattern at the top ...
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Alternative tests for A-SAT missiles

Keeping the strategic consequences of blowing up an actual satellite as technology demonstration aside, I want to assess it from a purely scientific/technological standpoint. To demonstrate the ...
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Was LM1 of Apollo 5 equipped with additional sensors and telemetry for the umanned “fire in the hole” test?

The first unmanned test of the Lunar Module was done in mission Apollo 5 LM 1. The separation of the ascent stage from the descent stage was done during flight. Did they install additional sensors and ...
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Were the landing gear doors closed during the Approach and Landing Tests?

This photo from an answer on the Shuttle Approach and Landing Tests shows the front attachment between the Enterprise orbiter and the Shuttle Carrier Aircraft. The support strut reaches the ...
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614 views

Which of the orientation is preferred for static fire testing of a liquid rocket engine - vertical or horizontal?

Liquid rocket engine's hot fire testings are performed both vertically and horizontally. Vertical orientation - Falcon heavy, Falcon 9, Rutherford engine, UCSD Engine test from 2014 , Merlin 1D, MASA ...
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Orion Heat Shield

I've heard that a different design of heat shield will be in place for the future Orion missions. How is the heat shield going to be different, and will the (Planned) Dec 4th launch of Orion ...
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What is the advantage of doing a static test fire before launch?

Continuing the series of questions (part 1, part 2) inspired by the recent loss of the AMOS-6 satellite during a static test fire, here's one thing that puzzles me a bit: What kinds of problems is a ...
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Have spaceships been tested to withstand bullets?

This answer on Worldbuilding (to "How to solve the old 'gun on a spaceship' problem?") posits that ISS can easily withstand a bullet fired from a handgun Our current micrometeorite shielding can ...
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How much does annual maintenance of a vibration table cost?

The company I work for produces hardware for spacecraft and we routinely have to test that hardware to ensure it meets the stringent requirements for random vibration environments on the missions they ...
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Could the Space Shuttles other than Enterprise easily do drop tests from the Shuttle Carrier Aircraft?

This question was inspired by comments on this answer. The Space Shuttle prototype Enterprise was only used for approach and landing tests, for which it was flown on a carrier 747, until it was ...
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How long does it take SpaceX to mount a stage on the McGrgeor test stand, run the test, and dismount it?

Gwynne Shotwell at SmallSat 2016 in Utah mentioned that SpaceX would be using the JCSAT-14 recovered first stage as a fleet leader in wear and tear. That they would be mounting it on the McGregor, TX ...
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Why jettison the data recorders in the Orion AA2 abort test?

This answer states parameters were transmitted in real time. Thus, why was it needed to record them onboard into (perhaps complex) data recorder that are then jettisoned (with a probability of ...
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For the Starhopper testing, how will SpaceX hold down the vehicle?

SpaceX is testing the Raptor engine on the Starhopper they built in Boca Chica. For static fires of a Falcon 9/Heavy they use the pad itself, the holddowns to the pad, to keep it from taking off. ...
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Testing a parachute for a Mars landing using a wind tunnel at hypersonic speed and Martian pressure?

The parachute for the Mars Science Laboratory (with the Curiosity rover) was tested in the NASA Ames Research Center 80 by 120 Foot Wind Tunnel. The wind tunnel is currently capable of air speeds up ...
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What is the surrogate liquid for LOx during the preliminary testing of injectors?

Before transitioning to the LOx tests during any new injector development, water is typically used for calculating flow rates, pressure loss, etc. But testing with water cannot qualify as a suitable ...
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Have nuclear explosions in space produced any debris that was subsequently tracked, or did all of them completely self-vaporize?

This answer to Where in the solar system could a nuke be tested without anybody noticing? has got me wondering if nuclear explosions (nuclear tests) in space above Earth ever produced any chunks of ...
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How was sky crane (used on Mars Science Laboratory's Curiosity) tested?

This is sky crane: Mars has 1/3 of Earth's gravity, so how was sky crane tested on Earth? Did they even test it at all? Did they repeatedly do the math, and make sure everything works so that they ...
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Why is ISRO Launch Escape System so SLOW?

I've just watched a video of the recent test and one thing I noticed is that comparing to other LES, like Mercury, Dragon, Soyuz, it looks really sluggy - like it has like 1.3-1.5 TWR. For pad abort, ...
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Testing of a first stage using dummy upper stages?

The first stage of the Saturn I was tested three times using dummy upper stages filled with ballast water, see Project Highwater and this question. The first two flight tests of the Saturn V (SA-501 ...
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What exactly is a “Green Run test” for SLS that NASA is considering skipping?

The Ars Technica article Rocket Report: A new Delta 2, Blue Origin inks with NASA, a fiery Falcon Heavy says: Boeing seeks to ship SLS core stage by the end of 2019. With a renewed emphasis from the ...
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How to experimentally determine the degree of atomization of the propellants mixing in a fuel injector?

When validating a fuel injector design on a test stand using liquid water to simulate a liquid-liquid fuel injector(the one i'm working with currently is a pintle design but I suppose one could ...
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Did Corporal or other rockets launched from White Sands land in Mexico? If so, how often?

At 10:39 in the video Explorer One is the following: Pickering had once half-joked that JPL could do anything, but building the corporal proved a humbling ...
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Project Morpheus

This is the NASA tether test configuration of project Morpheus. The image has been taken from this paper. The test is basically to test the NGC and engine performance of the vehicle. Here we find a ...
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At what altitude(s) were the Viking BLDT rockets fired?

I'm trying to understand the details of the 1972 Viking BLDT test missions (in earth's atmosphere). I found this diagram in a book and the general description that the (four) BLDT (balloon drop) tests ...
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How high will the Crew Dragon capsule get during the In-Flight Abort?

During the In-Flight Abort test (IFA), the Crew Dragon capsule will pull away from the Falcon 9 rocket when the rocket is undergoing maximum aerodynamic stress. At that time, it will still be going ...
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What's the most optimal method of motor attachment for Horizontal Static Fire Tests?

I'm a college student new to rocketry, and am working on the horizontal test structure for a static fire test of our motors. The max thrust for the booster motor is about 6000 pounds, and the ...
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How video projection screen is used in test of Europa Clipper's high gain antenna?

Phys.org's Europa Clipper high-gain antenna undergoes testing says: The full-scale prototype antenna, which at 10 feet (3 meters) tall is the same height as a standard basketball hoop, is in the ...
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How are fixed exposure cameras calibrated on earth for space lighting?

How are cameras that have a fixed exposure/gain calibrated/tested on earth for space lighting? I'll further explain with a hypothetical example of what I mean: ISRO launches a Mars-bound planetary ...
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Could Spacex build a starhopper (starship prototype) at Vandenburg, CA launch site?

I know Spacex is building a starhopper (starship prototype) in Texas and Florida. Could they also build a starhopper prototype at the Vandenburg, CA launch complex? I know Vandenburg is better for ...
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351 views

What psychiatric and psychological tests do people need to pass to become astronauts?

I am writing a short film about an astronaut during re-entry to earth. Part of the conflict I wrote is that the astronaut could not pass the mental tests required. Could anyone tell me any tests ...
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Why was the payload placed on the rocket for a test? [duplicate]

The payload for the Falcon 9, the Amos 6 satellite, was placed on top of the rocket during the static fire test. Why was this done?
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Why would an 8-minute burn result in a 6-month delay?

The Ars Technica article Vice President may tell NASA to accelerate lunar landings ends with: And on Thursday, NASASpaceFlight.com reported that the agency is considering skipping a critical test ...
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Which communications satellite “fell down?” [duplicate]

I remember reading about an accident where a big, expensive communications satellite actually fell off it's mount and landed on the floor of the room where it was undergoing final assembly and ...

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