Questions tagged [mechanisms]

Mechanisms are mechanical systems used on spacecraft and/or ground support equipment for spacecraft. The mechanisms may be manually (for example, ISS personnel airlock hatches), electrically (for example, ISS Common Berthing Mechanism latches), hydraulically (for example, shuttle Orbiter landing gear uplock hooks), or pneumatically actuated (for example, shuttle Orbiter 17" feedline disconnect valve latches).

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9
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1answer
185 views

Is there an equivalent of the Dragon 'claw' and Apollo umbilical fairing between the Soyuz crew and service modules?

The Apollo service module provided power etc. to the command module through umbilical connections covered by a fairing. When the two modules were separated, a 'guillotine' cut through the cables and ...
42
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1answer
5k views

Was the payload bay of the Space Shuttle depressurized before launch?

We know that the payload bay of the Space Shuttle Orbiter carried satellites, pieces of equipment for repairing satellites and components of the International Space Station. Was the payload bay of ...
7
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1answer
286 views

Have any launch systems other than Saturn V used a controlled release?

I was quite surprised to read in this question one very interesting detail about the system used for Saturn V launch release. Saturn V employed a system of pins and dies such that when the hold-down ...
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1answer
139 views

Exactly what was Surveyor 3 doing with a spring-loaded boxing glove-like device?

The thorough moon.NASA.gov/exploration page Moon Missions shows the image below. I learned almost all of what I know about Physics and Engineering from the Wile E. Coyote and the Road Runner cartoons, ...
15
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1answer
542 views

How were the pins for Saturn V controlled release tested?

I came across the following section of the Saturn V Flight Manual (pdf): The intriguing part is that they used 12 pins to actually bolt down the Saturn V to the launch pad and the combined engine ...
5
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1answer
500 views

Help understanding this Apollo 11 docking probe image, what are we looking at, and from where?

The New York Times mix media "article" Apollo 11 As They Shot It shows original photographic images taken by the astronauts and related quotes by them. In one section the text says: ...
9
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2answers
481 views

Connection between SM an CM

If the bottom part of the command module (CM) of the Saturn-V was the thermal shield, how was the CM connected with the utilities of the Service Module (SM)?
8
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1answer
215 views

How was APAS-89 chosen for Buran and Kristall?

SSVP, a probe-and-drogue docking system, is the main docking system used by the Soviet/Russian space program. Ever since the first Salyut 1 mission, only three Soyuz spacecraft, Soyuz 16, Soyuz 19, ...
6
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1answer
1k views

How are umbilical connectors held in place until their intended detachment?

When a rocket is on its launch pad, umbilicals allow the flow of liquids, gases, electric power, and signals to the spacecraft. The umbilical is detached from the spacecraft at or before launch, to ...
5
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1answer
658 views

Saturn V and STS holding to launch pad mechanism

In this question on quora, the first answer mentions that for Space Shuttle launches they changed the holding mechanism to explosive bolts from the clamps used to hold the Saturn V. The video links ...
5
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1answer
284 views

Transfer of astronauts from CSM to LM

Did the astronauts "remove" the docking probe, the drogue of the LM, and related mechanisms from the CSM to enter the LM of Apollo 11?
5
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2answers
267 views

How does the hopping mechanism of the Minerva II rovers work?

The Minerva II rovers deployed to Ryugu by Hayabusa 2 have gotten a lot of news coverage for their hopping method of locomotion. Is there public information on exactly how this works? I seem to recall ...
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2answers
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What holds the Space Shuttle orbiter itself stable on the launch pad?

From a structural point of view, what is holding up the orbiter on the launch pad prior to a launch? Are the tail service masts more than just a collection of conduits and plumbing? Or, are the solid ...
6
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1answer
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How do the booms on ISS (and other spacecraft) extend and retract?

In an answer to my previous question, OrganicMarble posted a video: The booms like through the center of ISS solar panels are quite common in space use - supporting ...
18
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1answer
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Can ISS fold its solar panels?

The solar panel modules of ISS use an extending central truss structure to stretch two "ribbons" of solar panels. Can that structure be re-folded in space, if need arose (for whatever reason), or is ...
32
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2answers
5k views

ISS Structural Integrity

The ISS occasionally fires thrusters to correct orbit and uses reaction control wheels to adjust attitude. It also experiences various external forces - tidal, aerodynamic, etc. From the outside, it ...
9
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1answer
1k views

How are remove before flight pin mechanisms realized in satellites?

According to the cubesat design specification electrical requirements (3.3.7 in revision 13) a Cubesat shall include an RBF pin: 3.3.7 The CubeSat shall include an RBF pin. 3.3.7.1 The RBF pin shall ...
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3answers
1k views

What types of decoupling mechanisms to separate spacecraft are used in spaceflight?

For a project I have to find select a decoupling mechanism for a spacecraft. I have searched google but I can't find any documentation on decoupling mechanisms. I need to know what types of decoupling ...
7
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2answers
713 views

What do remotely-controlled bolts look like?

I've been reading about various components that are attached to the ISS and occasionally see references to "remotely controlled bolts". That makes sense, but I've barely been able to find more than a ...
5
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1answer
432 views

What are joint systems used for mounting manipulators to spacecrafts?

What are the joint systems used for mounting mobile manipulators to spacecraft? Looking answers for questions like: How SSRMS (Canadarm2) is mounted to space station? What joint system does it use ...
2
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1answer
1k views

Why was the APAS docking system developed?

The APAS docking system was first used on the Apollo Soyuz Test Project mission. Both parties (US and USSR) already had developed and used docking mechanisms by then. Is there any truth to the claim (...