Questions tagged [testing]

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

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2answers
256 views

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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Why no parachutes in the Orion AA2 abort test?

On July 2, 2019, the Ascent Abort 2 test of the Orion spacecraft was performed, with the Orion command module ascending on a solid rocket booster, then firing its launch escape system to safely ...
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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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1answer
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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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1answer
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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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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 ...
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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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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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1answer
197 views

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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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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1answer
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How is sunlight simulated in spacecraft testing, given its brightness?

How could a light source like the sun be approximated on Earth for testing, given how much brighter it is in space than anything else?
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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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1answer
577 views

What is “light bar testing”?

A photo of the Parker Solar Probe was captioned as follows: In the Astrotech processing facility in Titusville, Florida, near NASA's Kennedy Space Center, on Tuesday, June 5, 2018, technicians and ...
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1answer
239 views

What was NASA's Tire Assault Vehicle?

Why did NASA build a vehicle specifically designed to attack aircraft tires?
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1answer
120 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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1answer
159 views

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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Why is a purging process necessary for static firing test of liquid rocket engines?

In Chapter 7 of Modern Engineering for Design of Liquid propellant Rocket Engines by Huzel and Huang, mentions the following engine cut off procedure. The cutoff sequence usually consists of ...
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1answer
300 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, ...
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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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1answer
138 views

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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212 views

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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1answer
541 views

What is Australia's Bartolomeo platform? When does it arrive at the ISS; when and where will it be attached?

In this answer I first heard about Australia's upcoming Bartolomeo platform, which will be used for testing things such as the Neumann drive. Question: What is Australia's Bartolomeo platform? When ...
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442 views

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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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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742 views

Testing flight characteristics before actual flight in model rockets?

I do a lot of scratch design/building of model rockets, but one of the things that I've struggled with is testing the models I come up with. Some of them are purely intended to be static display ...
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242 views

Disposal pool during RS-25 engine test?

Nasa recently did a test firing of an RS-25 rocket, and released a video of it. Here's a frame grab: Note that pool of water at the bottom right, with a pipe leading to it, and clouds of steam coming ...
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571 views

Progress of the raptor engine

I have seen that SpaceX has tested a scaled down version of the raptor, but that was about a year ago. Does anyone know the current progress? Do they have a full scale model? Have they hot fired a ...
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Why is there any launch window at all for the Falcon Heavy test flight?

Why is the window only ~3 hours long, why not 2? why not 5? why not "until it launches"? I'm guessing range safety, they could only get a TFR that long?
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Will the January 2018 government shutdown affect the Falcon Heavy launch?

The Falcon Heavy is currently undergoing testing at Kennedy Space Center's Pad 39A, which SpaceX is leasing from NASA. The hold-down test firing, according to the previously-linked article, may occur ...
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1answer
468 views

RS-25 Hot Fire Test

Yesterday, NASA Stennis successfully completed a hot fire test of Aerojet Rocketdyne RS-25 a.k.a SSME. It was noted in the webcast before the test started that they were testing the 'engine controller'...
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Does stress-testing a spacecraft affect its durability?

When a spacecraft is built and prepared for a future launch, its parts and the whole spacecraft usually goes through a lot of testing - for example, the James Webb telescope has already been through ...
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710 views

What will the Falcon Heavy maiden flight launch as its payload?

I know that Elon Musk has stated that SpaceX will try to launch the "silliest thing imaginable" on the maiden flight of the Falcon Heavy, but will it be a Dragon capsule on top or a special SpaceX ...
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What was the “sour milk smell” during the 1967 Apollo 1 testing?

In the first edition of Andrew Chaikin's 1994 book, "A Man on the Moon, there is a paragraph in chapter 1 which talks about troubles the Apollo 1 testing crew were going through. Chaikin states that ...
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Why is there a large wooden ball on Mariner 3's magnetometer?

Wood is good for certain niche space exploration applications, but the one below is not for spaceflight. According to the documentation for the archived photo: Several spacecraft were built for ...
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2answers
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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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1answer
670 views

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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1answer
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How does Orion take its bath (Hydro Impact Basin)?

In 2011 the NASA Langley Research Center completed the Hydro Impact Basin for conducting drop tests of the Orion spacecraft. How much water is the basin filled with for these tests? Does the Orion ...
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1answer
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Why is the F9-029 Amos 6 case more complex than the F9-020 CRS-7 explosion?

In the F9-029 Amos 6 mission failure at the launch pad, a "fast fire" happened near the 2nd stage of Falcon 9 FT. In F9-020 CRS-7 mission, an explosion happened in flight (again in the 2nd stage) a ...
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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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1answer
879 views

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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Why was AMOS-6 mounted on the rocket for a test fire?

I understand that the static test is a general test of pre-launch procedures, but risking a multi-million dollar payload for a test seems remarkable. Couldn't they use a mass simulator or something? ...
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1answer
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Was Amos 6 insured for pre-launch operations?

The Falcon 9 rocket, complete with the Amos 6 payload, just blew up (Or RUDed) on the launch pad. I believe the standard language for most launch insurances is that it is only covered after "...
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3answers
361 views

Does every liquid-fueled rocket engine get a test run before its actual flight operation?

I'm not referring to the obvious development testing, but the life cycle of individual engines. When a rocket is launched, have those specific engine "serial numbers" been previously test-run? Like ...
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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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4answers
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How does a simple construction keep a firing rocket on the ground?

Today I have seen this report of a SpaceX Falcon 9 rocket test firing. The force of a burning rocket is tremendous, and in the video we see an apparently simple construction keeping the rocket (or ...
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2answers
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Why doesn't this SpaceX rocket test fire use water sprays?

I know that rocket launches always have water towers spray water all around when the rocket is launching to suppress the extreme sounds and shockwaves generated by the launch and ensure the rocket ...
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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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2answers
373 views

Deluge system refresh rates

SpaceX has said they will take the recovered CRS-8 Falcon 9 first stage and test fire it 10 times at LC-39A. There is lots of discussion as to what that means. 10 full 2+ minute duration fires? 10 3 ...
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1answer
403 views

How would a manned Mars Lander be tested

This question just occured to me while I was setting up my first manned (err, kerbalized?) Duna mission in KSP: In order to test my basic lander design I did not want to start a whole Duna Mission but ...
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1answer
341 views

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 ...