Questions tagged [orion-spacecraft]

Questions regarding NASA latest manned spacecraft program currently under development. Orion spacecraft will be used for missions beyond Earth orbit. For questions related to the Project Orion (propulsion with atomic bombs exploded underneath the spacecraft) please use the nuclear-pulse-propulsion tag.

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What is the most efficient method of landing for space capsules returning to earth? [closed]

I have read that the Russians don't land on water because they don't have access to a large warm-water coastline like the US. US has large swaths of land and water and most US capsules (Apollo, Dragon,...
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2 votes
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What would have happened if lightning struck the Orion LES instead of the umbilical tower?

Yesterday, a lightning struck the SLS' umbilical tower during a scrubbed wet dress rehearsal. Is it normal for a lightning to strike the umbilical tower instead of the 3 lightning arresters around the ...
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Why did NASA never launch crewed Orion missions on a Delta IV Heavy to the ISS?

Following the successful EFT-1 mission, why didn't NASA start launching crews to the ISS on the Orion spacecraft? This question deals about why crews weren't sent to the Moon, but I wonder why wasn't ...
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How do all the struts and crosses in the Orion Crew Capsule Service Module work together? What do each of these parts do?

The BBC's Europe to make more hardware for American Moon missions says that three more service modules for the Orion Crew Capsule have been ordered by NASA, bringing the total desired to six. I ...
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Why is the re-entry velocity of Orion almost the same as the escape velocity?

I have read that the predicted re-entry speed on the Artemis I mission for the Orion spacecraft into the Earth's atmosphere is about 24,500 mph or 10.9 km/s. Why is it almost the same as Earth's ...
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Why is the Orion spacecraft so big?

The Orion spacecraft which is to be used for the Artemis missions will be rated for 6 astronauts. Why so many? Given the "political" assignment is to put "a woman and another man to the ...
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Why does it take 9 months to access the Orion service module interconnect?

In this story (versions of which are in several other places) it is reported that it could take nine months to access and replace a Power Data Unit on the Orion spacecraft, one component of which has ...
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What are the practical limits of a rocket that receives propellant from the surface?

The Orion spacecraft was supposed to be propelled by igniting nuclear bombs behind it. Its proponents successfully demonstrated the concept using conventional explosives, on a small scale, for a few ...
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What capabilities does Orion have that Dragon-V2 does not?

In an answer to Why does the government still fund SLS while SpaceX is cheaper and has the same capabilities if not better?, Barry Jenekuns said: Dragon isn't comparable in capabilities to Orion and ...
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How much delta-v does the Orion spacecraft have?

Orion is intended to transport astronauts around cis-lunar space. How much delta-v performance does it actually have?
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Why isn't the Delta IV Heavy ever used for crewed spaceflight?

In 2014 the Orion spacecraft was launched on top of the Delta IV Heavy for the first time. Why do they build another rocket, the SLS, instead of launching the Orion on the Delta also with humans on ...
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Will it be possible for the crewed Orion spacecraft to fly over the lunar south pole to land the VIPER rover there?

Artemis 2, the planned crewed mission of the Orion spacecraft, will be launched in the fourth quarter of 2022 and will then be the first crewed spacecraft to the Moon in 50 years ! VIPER is a lunar ...
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What about Orion ISS missions?

I remember that the Orion spacecraft was a thing when it had its maiden voyage in 2014. Nowadays, all I read about is the SpaceX Crew Dragon and Boeing Starliner, which are both running late. Soyuz ...
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Does the FAA still license the people who fold human-rated reentry parachutes?

One of the links in the question International Orange? is the History.com article The Amazing Handmade Tech That Powered Apollo 11’s Moon Voyage which says of Apollo capsule re-entry and landing ...
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Feasibilities and challenges of these Orion + commercial lunar lander scenarios? [closed]

Suppose that US politicians want to fund a moon mission without SLS, using only hardware that is working now in 2019, using Orion together with some future moon lander supplied by the private sector. ...
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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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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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Why doesn't NASA plan a manned Venus flyby first? [closed]

After America will have returned to the Moon, why won't NASA make a Venus flyby mission with the Orion/SLS before going on to manned flights to Mars? They are planning crewed missions to Venus (...
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How many stages (approximately) will likely be used to get NASA astronauts to the Moon's south pole and safely back to Earth?

UPDATE: See Space News' NASA tweaks call for lunar lander concepts which links to: FedBizOpps: Human Landing System - Integrated Lander NASA.gov: NextSTEP H: Human Landing System - Integrated Lander; ...
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Orion cockpit instrumentation

I'm working on a spaceflight simulator (FSX SpacePort), and currently developing instrumentation for NASA's Orion capsule. I'm using whatever little info is available on line and trying to identify ...
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How effective is the Orion radiation protection plan?

This article gives a basic overview of the procedure for astronauts on deep space missions who need to take shelter from energetic events such as solar flares. The shelter area strongly resembles a ...
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What is the point of launching EM-1 on DIVH/F9H?

EM-1 was originally a full-up test of the SLS block 1B: Orion, ICPS (a modified 5-meter Delta cryogenic second stage), and the first stage/SRBs. NASA administrator Bridenstine’s statement on 3/13/...
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Surmountability of the technical risks to launching EM-1 on commercial rockets?

NASA administrator Bridenstine announced that commercial rockets (e.g., Delta Heavy and Falcon Heavy) would be considered as ways to launch EM-1 by July, 2020. Such a move would reportedly require a ...
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Can Delta Heavy launch a fully fueled upper stage with no payload attached?

There is right now talk of a potential dual launch mission to fulfill EM-1, where a Delta Heavy would launch a fully fueled upper stage to LEO, to there bet met with the Orion spacecraft, likely ...
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Why does Orion's Jettison Motor, have four nozzles but eight Attitude Control Motors arranged in an octagon?

Spaceflight 101's Orion Spacecraft Overview shows the following tests for the escape system. Why are there eight ACS thrusters arranged octagonally? Is it just to reduce cosine losses or does this ...
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What is under these four white covers on the upper part of the Orion capsule?

The New York Times article A NASA Journey to the Moon May Need to Find Another Rocket or Two shows an image of the Orion capsule in a file photo, along with the NASA director. There are four white ...
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Orion Exploration Mission-1; clarification and additional trajectory information?

This September 2017 video NASA | Exploration Mission-1 – Pushing Farther Into Deep Space is over a year old. I found some aspects interesting and wonder if more details about this trajectory are now ...
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Orion reentry plasma

Below are two screen shots from the video of the Orion reentry, Astronaut’s-Eye View of NASA’s Orion Spacecraft Re-entry, and a diagram. Is the plasma contained, or primarily within the viscous wake, ...
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What brand and model is the hand-held sextant tested on the ISS?

Astronaut Alexander Gerst is testing an hand-held sextant on the ISS in the context of the experiment Sextant Navigation for Exploration Missions, see picture below. What is the brand and model of ...
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What is the nature of the sextant tests on the ISS for Orion cis-lunar emergency navigation?

According to the NASA Johnson video Space to Ground: A Star to Steer By: 08/10/2018: A tool that once helped sailors cross vast oceans for centuries is now being put to the test in space. The crew ...
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Could an Orion Spacecraft launch from a Falcon Heavy? [duplicate]

The cost of an SLS launch is significantly more expensive then a Falcon Heavy. Could an Orion spacecraft be mated to the Falcon Heavy to save launch costs?
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Do Orion's solar panels have adjustable sweep?

In this video overview of NASA's proposed EM-1 mission, the solar panels on the Orion spacecraft are initially shown extending perpendicular to the spacecraft (at around 3:46). Shortly after that, as ...
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6 votes
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Brachistochrone variation for Earth-to-Mars Orbit

Wouldn't a Brachistochrone curve to Mars orbit be a much faster and more efficient way to send personnel and equipment to mars as compared to the Hohmann transfer if we used an Ion engine? The below ...
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5 votes
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Were any Components Off The Shelf (COTS) used in the Space Shuttle?

Are there examples of Components Off The Shelf (COTS) used in the Space Transportation System? And is NASA considering using COTS in future manned space flight systems like Orion and the SLS?
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What limits how long spacecrafts like Orion, Dragon, Starliner can support their crews' lives?

The next generation crewed spacecrafts is about to fly in the decade of 2020. Not only those in the headline here are trying to make it, but more are being developed privately and internationally. ...
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7 votes
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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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Can a crewed capsule land safely if its launch escape tower does not separate?

Apollo, Soyuz and Orion have used, are using or will use launch escape towers. If it is not needed, it must separate during flight. What if it does not separate? I suppose that the spacecraft would ...
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Boeing starliner launch vehicle [closed]

Boeing and Spacex is practically in race to human flight launch first. It's rocket-ULA Atlas-V have excellent record already in industry. But the Starliner aerodynamic problems aerodynamic/mass due to ...
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Are the Boeing CST-100 Starliner and Orion MPCV interchangeable at any level?

Although the Boeing CST-100 Starliner and the Orion MPCV are designed for different missions (LEO vs beyond LEO), one might imagine a mission which could be served by either vehicle. Presumably, both ...
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Could SpaceX's Dragon V2 or the Boeing Starliner be upgraded to travel beyond LEO

A recent Government Accountability Office (GAO) report has cast doubts on the ability of the Orion MPCV to meet its requirements on its already excessive budget. Orion has been in development since ...
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6 votes
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Could the Orion or Apollo command module safely land on land in an emergency due to a navigation error?

So we all know that the Apollo missions used a water landing, as will Orion, while the Soyuz lands on land but can land on water if needed. What would have happened if an Apollo crew began reentry in ...
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4 votes
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Atmospherics for 'next generation' manned space flight / Exploratory Class Missions

Decompression sickness is a significant risk to both current and future astronauts and currently significant time is lost in preparation for extra-vehicular activity on the ISS [including airlock ...
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3 votes
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Why is NASA redirecting an asteroid to Lunar Orbit instead of LEO? [duplicate]

One of the missions NASA is planning is to redirect a small asteroid to lunar orbit and land astronauts on it. If it can redirect asteroids, why not just send it to LEO and send a Dragon to it?
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Reason for different "cone angles" of different space capsules?

Here is the Cargo Dragon: And here is the Orion: The "cone" that orion makes has a large opening angle - perhaps about 70 degrees. Meanwhile, the Dragon is almost cylindrical - the opening angle is ...
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4 votes
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Can Orion (or Dragon or CST-100) be upgraded to do multiple EVA's (space walks)?

Orion is designed to support only one EVA. There's no airlock so the entire spacecraft would be evacuated of air during the space walk and then repressurized from gas flasks, with a storage enough for ...
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Could suitports on Orion/Dragon2/CST-100 make multiple EVA's available?

Suitports seem like a brilliant idea that saves lots of mass and complexity compared to an airlock, which traditionally is a dumb pressurizable gas wasting tube where the astronaut suits up. The first ...
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How much of the Orion vehicle will be built or provided by Airbus/ESA?

Does this mean that, for all the fanfare, the USA's actual contribution to the future of human-flight space exploration based on this particular vehicle is now rather less than is economically-...
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3 votes
3 answers
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Are the Orion and the CST-100 basically the same spacecraft?

Lockheed Martin, mostly, develop both he Orion and the CST-100 for NASA. I feel like I'm a bit late at learning here, but are they basically the same designs? The LEO and the Beyond-LEO version. CST-...
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Could Orion repeat any of the Hubble Space Shuttle servicing missions?

I have a distinct feeling that there's some apparent no-go on the question in the title, but currently can't put my finger on it; For the lifting mass to Low Earth Orbit (LEO), let's assume that SLS (...
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Could Orion be used for human exploration of Phobos and Deimos?

NASA's human space flight program plans to within 5 years or so have access to Orion and a launcher for it. Without a Lunar or Martian lander, the targets for Orion missions are limited. But given ...
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