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Questions tagged [payload]

Questions regarding equipment or other material to be transported during space exploration.

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118 votes
6 answers
63k views

How much bigger could Earth be, before rockets wouldn't work?

hint: Apparently the Tsiolkovsky rocket equation does not actually say that you can launch a conventional rocket into orbit around an arbitrarily large and massive body. I'm looking for a number ...
uhoh's user avatar
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17 votes
2 answers
2k views

What is the largest number of identical satellites launched together?

What is the largest number of (essentially) identical satellites launched together? Form factor alone (e.g. 1U, 3U cubesat) is not enough to make satellites identical, they need to be the same design,...
uhoh's user avatar
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6 votes
2 answers
773 views

Where are all those blocks of steel and concrete now?

According to the Wikipedia article about Elon Musk's Tesla Roadster now in Heliocentric orbit: Traditionally, concrete or steel blocks are used as ballast in risky test flights. SpaceX wanted to ...
uhoh's user avatar
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18 votes
2 answers
3k views

Has any payload been as silly, as the Falcon Heavy's Tesla Roadster?

Seemingly as a joke, Elon Musk suggested in a tweet that the first payload of Falcon Heavy demo flight would be his Midnight Cherry Tesla Roadster. The first payload of Falcon 9 with a Dragon test ...
geoffc's user avatar
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5 votes
1 answer
523 views

Was the Space Shuttle balanced experimentally before flight?

Even spacecraft that are designed and optimized for a single mission need to be carefully balanced experimentally, and have ballast added before flight. Why did New Horizons have to be spin-balanced ...
uhoh's user avatar
  • 149k
5 votes
1 answer
294 views

help understanding this complicated structure that will deploy HySIS

This ISRO page for the HysYS spacecraft says: HysIS, the primary satellite of PSLV-C43 mission, weighing about 380 kg, is an earth observation satellite configured around ISRO’s Mini Satellite-2 (...
uhoh's user avatar
  • 149k
4 votes
1 answer
341 views

What's the largest rocket that was carried to space inside a Space Shuttle?

Why did the Ulysses probe reach Jupiter much faster than Galileo? got me wondering about the largest rocket that was carried to space inside a Space Shuttle. Largest in terms of some performance ...
uhoh's user avatar
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43 votes
8 answers
12k views

Why is the first launch of Falcon Heavy sending a car instead of something useful?

The first launch of the new Falcon Heavy will be sending up a Tesla Roadster owned by Elon Musk as its payload instead of something more useful. Why spend all that money and effort sending up a car? ...
Cactus Kas's user avatar
28 votes
4 answers
17k views

What's the largest single object payload ever lifted into space?

I am aware that the Saturn V is the largest rocket ever built and was capable of lifting more weight into space than anything that exists today. Modern rockets often carry several satellites up at ...
Octopus's user avatar
  • 1,142
20 votes
2 answers
8k views

How does a single rocket place multiple satellites into orbit?

Nowadays, many rockets transport more than one satellite in orbit. But how does a single rocket place multiple satellites into their orbits? Do all rockets which place multiple satellites into orbit ...
Hash's user avatar
  • 18k
19 votes
8 answers
5k views

How would a long pole be transported to space?

Can a long pole or a set of poles be strapped to the out side of a rocket (like a bottle rocket)or on the nose as an external payload without interfering with the aerodynamics of the rocket? How would ...
Muze's user avatar
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19 votes
2 answers
860 views

What was the outcome of the launch of ZUMA by SpaceX, to the best of the public's knowledge?

Now, I realise this question is inherently unanswerable due to the classified nature of the mission, and speculation is also not desirable, but that's okay — because we can at least assemble official ...
marked-down's user avatar
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15 votes
2 answers
2k views

Why are satellites and other payloads always placed at the top of rockets?

In all rockets that launch satellites to orbit, the satellite is always placed at the top. Why are payloads always placed at the top of rockets?
Hash's user avatar
  • 18k
12 votes
2 answers
3k views

Can the Falcon Heavy handle deep space missions?

Can the Falcon Heavy rocket handle sending payloads past Jupiter like the Atlas V?
CBredlow's user avatar
  • 1,247
11 votes
1 answer
1k views

Starman what are all these little bits

I keep seeing all these little partials or bits flying all over the place, any idea what they are (circled in green). Here is one moving in front of the earth.
ArtisticPhoenix's user avatar
9 votes
3 answers
12k views

What is Falcon heavy's payload capacity to Trans-Lunar Injection

According to the SpaceX website (http://www.spacex.com/falcon-heavy) the falcon Heavy can carry 16.8 tons to Trans Mars Injection (TMI) and 26.7 tons to Geostationary Transfer Orbit (GTO). How much ...
ORcoder's user avatar
  • 1,033
9 votes
1 answer
6k views

How much payload can Falcon Heavy Reusable lift?

I can only find figures for the Expendable configuration - 63.8 metric tons. The Wikipedia article says The partially reusable Falcon Heavy falls into the heavy-lift range of launch systems, ...
kim holder's user avatar
  • 21.4k
9 votes
3 answers
10k views

What G-forces do different launchers cause?

What G-force is the payload exposed to on different launchers? Are there more gentle and more rough rockets? And do other factors, like vibrations, differ significantly too? Some scientific payloads ...
LocalFluff's user avatar
5 votes
1 answer
2k views

What are the longest current rocket payload fairings, capable of carrying long space station sections?

Space News' China launches Tianhe space station core module into orbit China successfully launched a 22-metric-ton module April 28, beginning an intense period of missions for constructing the nation’...
uhoh's user avatar
  • 149k
2 votes
2 answers
2k views

How much energy is required to send a payload of 40 t from Earth's surface to LEO?

I am confused with energy requirement equations... Am I anywhere near with my following assumptions: $\Delta v$ from surface to LEO is 9000 m/s typical exhaust velocity $v_e$ = 4500 m/s and mass of ...
Nina K's user avatar
  • 71
0 votes
1 answer
203 views

Highest number of distinctly different satellite designs on a single rocket

The current answer to the question Highest number of satellites launched on a single rocket is 104, on ISRO's PSLV-C37. One of the runner-ups is KANOPUS-V-IK with about 73 satellites. The trick is to ...
uhoh's user avatar
  • 149k
19 votes
4 answers
1k views

What payload was expected for the 2018 Mars Dragon flight ("Red Dragon")

SpaceX has long been planning to use Dragon capsules to carry objects anywhere in the Solar System. They have officially announced a 2018 launch to Mars. Specifically, the launch window is April-May ...
PearsonArtPhoto's user avatar
  • 121k
17 votes
1 answer
344 views

When have secondary payloads damaged the primary payload of a launcher?

Primary payload customers have traditionally been cautious when allowing secondary payloads on the same launcher. For example, a secondary payload is not trusted to have its own chemical propulsion ...
LocalFluff's user avatar
14 votes
2 answers
3k views

How much mass could the Saturn V rockets have landed on the Moon if nothing was coming back?

What dry mass could have soft-landed on the Moon if a Saturn V had been reconfigured to launch a robotic mission going entirely to the surface? Obviously, that wasn't possible at the time, but for a ...
kim holder's user avatar
  • 21.4k
13 votes
2 answers
826 views

Are there any remaining spacecraft that can retrieve objects from Earth orbit?

Now that the Space Shuttle has been retired, are there any spacecraft available that can retrieve an object from orbit and return it safely to Earth? What would be the maximum size of such an object?
Tomislav Muic's user avatar
12 votes
2 answers
2k views

What is simulated payload and why are they used?

I read that Angara 5 will carry a "payload simulator" on its first test flight tomorrow Dec. 23, 2014. But the Indian GSLV mk.III recently flew for the first time with a prototype of the ISRO crewed ...
LocalFluff's user avatar
9 votes
1 answer
3k views

Why are there such large differences in launcher payloads to higher orbits (GEO, Lunar) compared to LEO?

According to this Wikipedia list, the rockets Delta IV Heavy and Proton can launch the same mass payload to LEO, 23 tons. But the capacity, according to Wikipedia, is dramatically different when it ...
LocalFluff's user avatar
9 votes
1 answer
2k views

Is it possible to build a rocket with 2kg payload? [duplicate]

Is it possible to build a small rocket that carries 1 cubesat into orbit? And how small the rocket would be, if it is possible?
Olpas's user avatar
  • 149
8 votes
2 answers
768 views

Proportions of a reentering spacecraft as compared to fuel mass

Call this a thought experiment. Spacecraft to Earth orbit and beyond are traditionally launched by means of one or more rocket engines. The fundamental principle is that a rocket moves by expelling ...
Everyone's user avatar
  • 13.6k
5 votes
1 answer
1k views

what is revisit rate

I want to understand what the revisit rate is. If the payload is required to make the revisit rate of 5 hours. The orbit is LEO (altitude less than 2000 kms). What does this mean? Revisit time - the ...
geetha's user avatar
  • 251
5 votes
2 answers
467 views

Could current (+SLS+FH) launchers use much larger diameter payload fairings?

Can launchers reasonably be equipped with wider payload fairings in order to carry larger (not heavier) payload? What would be the main problems with doing so, air resistance during the early slow ...
LocalFluff's user avatar
4 votes
1 answer
256 views

what kind of valves are used in payload fairing for venting?

I wanted to know that there have been a handful of literature that mentions vent openings in the rocket payload fairings. However, none specify the kind of valves used in those fairings? does anyone ...
Shamoon's user avatar
  • 41
4 votes
0 answers
90 views

What was South Korea's Nuri's dummy payload and where did it end up?

Wikipedia's Nuri (rocket) explains that it is a South Korean, three-stage all indigenously developed launch vehicle, and says: On 21 October 2021, it had its first flight at 08:00 UTC and it launched ...
uhoh's user avatar
  • 149k
3 votes
2 answers
353 views

Has anything like the Luna 2 "Flag Grenade" been done since?

I read this week's XKCD and learned a fun new fact about the first contact with the moon. A replica of the ball that they mention in the comic is shown below: Gratis the wiki page on Luna 2. Source ...
Magic Octopus Urn's user avatar
3 votes
0 answers
77 views

Info needed on PSLV launch adaptors and configurations

I want to understand how satellites are accommodated in PSLV. I know about few configurations and adaptors that've been used in the past. Is there any document which gives detailed info on Multiple ...
Suyash's user avatar
  • 31
3 votes
1 answer
166 views

How much payload capacity is available for a Rocketlab Photon interplanetary mission to Venus?

I've been quite interested in Rocketlab's Photon satellite bus, which they claim to be able to send to Venus. I'm trying to get some kind of an idea of what kind of payload might possible be able to ...
PearsonArtPhoto's user avatar
  • 121k
3 votes
1 answer
1k views

Space rocket payload by inclination

I know that near the equator where the inclination is 0° it is easier to put payloads to low earth orbit because of the advantage of rotation speed of earth which saves more fuel. Saving more fuel ...
Mark777's user avatar
  • 2,145