Questions tagged [saturn-v]

Questions pertaining to the launch vehicle developed by Wernher von Braun's team under Arthur Rudolph's supervision at Marshall Space Flight Center for carrying astronauts to the Moon. Saturn V (or C-5 configuration) had three stages with clustered engines F-1 and J-2 and an instrument unit.

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7
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2answers
80 views

Cine footage fron Saturn V launch's

How did they recover the film showing the separation of the S II stage from the S 1C and the tumbling interstage faring which attached the two stages. The camera which is attached to the S II has a ...
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2answers
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Was all the fuel expended in each stage of a Saturn V launch?

Particularly the first and second stages into earth orbit - were the stages run dry before separation? On first thoughts, It would seem to be safer to do so, but I realised the engines required liquid ...
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1answer
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C-band radar in Saturn instrument unit?

In an answer to the recent question there was this image: What about 8. C-band radar? Is it an active radar unit (rocket to ground) or a radar transponder (ground to rocket) only?
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What are these white cylindrical objects pointed in different directions in this photo of the Saturn V instrument unit?

The BBC News article Apollo in 50 Numbers; The Technology shows an image of the Saturn V's computer along with the caption: The Saturn V's computer was probably the largest computer ever blasted ...
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1answer
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Is this really the Saturn V computer only, or are there other systems here as well?

The BBC News article Apollo in 50 Numbers; The Technology shows an image of the Saturn V's computer along with the caption: The Saturn V's computer was probably the largest computer ever blasted ...
9
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1answer
262 views

Why was the Saturn V considered to be human-rated after Apollo 6?

Apollo 6 (AS-502) was the second flight of the Saturn V (the first having been Apollo 4/AS-501, five months earlier), the last flight of a Block I CSM,1 and the last unmanned Apollo mission (if one ...
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3answers
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Why does the Saturn V have standalone inter-stage rings?

Why are they not integral to the lower stages, e.g. like the Falcon 9? This applies not only to the ring between the first and second stage and also to the shoulder between the second and third stage.
11
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0answers
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Human-rating the Saturn V using modern standards

Would a complete Apollo-Saturn stack (like e.g. AS-506) be human-rated according to the latest human-rating process (NPR 8705.2C) of NASA? If not, what are the biggest show-stoppers? This question ...
10
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1answer
754 views

Is there a realtime, uncut video of Saturn V ignition through tower clear?

"Hi, I'm Organic Marble and I'm bad at searching Youtube." Inspired by this question What event determined the transfer of control from Kennedy Space Center to Houston?, I'd like to watch a 1:1 (...
33
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3answers
6k views

Could the museum Saturn V's be refitted for one more flight?

Even though we will not build new Saturn Vs, there currently exist three Saturn Vs in museums. Could any of these rockets be refitted for flight? If not, what specific component would prevent the ...
3
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1answer
213 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 ...
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3answers
296 views

Use of different fuels for stages of Saturn V

Why were different fuels used for different stages of Saturn V? I read that the first stage used kerosene (RP-1) and LOX combination, but liquid hydrogen and LOX for the second and third stages. With ...
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0answers
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What modifications constituted the ‘reorificing’ of F-1 engines on later Saturn V flights?

The topic of uprating the Saturn V’s first stage engines appears to have been widely discussed, and yet there is little agreement as to how it was done. Early Rocketdyne F-1 engines quote lower ...
8
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1answer
300 views

How long is the Apollo Lunar Module extraction window?

In Apollo lunar missions, the Command/Service Module extracts the Lunar Module after S-IVB's translunar injection burn. Since all three spacecraft were on a transfer orbit, they would be in the ...
6
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1answer
247 views

What function did the ribbed portions of the Saturn V exterior serve?

I would like to know what function did the ribbed portions on Saturn V exterior serve, such as the the intertank section and forward skirt on Stage 1. Thank you!
6
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2answers
296 views

Why did the ullage motors for the S-IVB TLI burn shut down prior to S-IVB ignition?

I found "Technical Information Summary AS-501: Apollo Saturn V Flight Vehicle" when looking for info about the Saturn V staging sequence. It contains a nice diagram on pages 14-16 showing the various ...
6
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1answer
203 views

What may be the condition of the first stages of Saturn V splashed into ocean after separation?

Two F-1 engines were recovered from a depth of 14,000 feet (4,300 m), about 400 miles (640 km) east of Cape Canaveral after 40 years in the ocean. There is much damage caused by splash down but very ...
3
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1answer
207 views

When a Saturn V reaches max Q, what fraction of the lengthwise structural load is due to drag rather than acceleration?

Ignoring all other structural loads besides the lengthwise compression of the rocket. This is useful to know when theorizing about whether high altitude launches (e.g. from airplanes) could ...
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1answer
200 views

Vented interstage for the final stage of Saturn V

As we can see in the figure below, the interstage between the escape module and the command module is vented. Why did they go for vented interstage? Wouldn't it increases the serodynamic loadings and ...
8
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1answer
272 views

Apollo-SLA & LM air pressures at launch

At the time of launch what was the air pressure in the Apollo LM, and the spacecraft-LEM adapter section (SLA)? Was the air vented from the SLA as the vehicle entered orbit?
5
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1answer
429 views

How were the propellant pipes on the Saturn V LUT routed to the service arms?

I'm trying to design a model of the Saturn V Launch Umbilical Tower. I can find pictures showing how the propellant piping runs along the service arms, and from pictures showing the pipes running up ...
7
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1answer
268 views

What does “angle of attack 100%” mean in Apollo abort rules?

In Apollo Mission Rules and Saturn V Flight Manuals, I have seen the following abort rules: I understand what most of this means -- if the launch vehicle begins turning at more than 4 degrees per ...
6
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1answer
491 views

Did the Saturn V interstage ring burn up in the atmosphere?

In Saturn V launch footage, the interstage ring falls away shortly after stage I separation, briefly catching fire from the stage II exhaust. Does this ring continue to drop uncontrolled and impact ...
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2answers
229 views

Did the N-1 have future plans, like the Apollo Applications Program?

The Saturn-V booster was only really used for two types of missions. Lunar Skylab (ASTP used a Saturn-1B booster) That is, heavy lift to lunar orbit, and heavy lift with a space craft. There ...
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4answers
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Were all the switches on the Command Module and LM control panels used during a mission?

Given there are so many switches on the control panels, and they each served a specific purpose, was every single switch used during a mission to the moon (with the exception of the abort switch ...
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2answers
7k views

Did the Saturn V rocket have any purely aesthetic features that didn't serve an actual function?

The rocket itself is magnificent, yes, but with so many ins and outs to it, curious if the entire design was solely purpose built, or if there were features specifically for aesthetic purposes.
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1answer
145 views

Identify this 1960's launch site and mission?

These are screen shots from a video of the Assignment Earth episode of Star Trek (TOS). It was filmed in January 1968. I would assume that the image shown on the screen is NASA file footage, and that ...
5
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1answer
386 views

Apollo 6, reason for premature engine shutdown of two engines of second stage of Saturn V?

I found different versions in the English and German Wikipedia articles about the Apollo 6 flight. "Das zweite Triebwerk wurde vom Steuerungssystem fälschlicherweise deaktiviert, weil die ...
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1answer
438 views

Saturn launch precautions for clearing tower?

In watching some Saturn rocket launches from the perspective of the camera being on the launch tower, it seems as if there was relatively little distance between the launching rocket and the tower. I ...
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1answer
2k views

Was 39A built with a rocket much larger than the Saturn V in mind?

The interesting question What are the most difficult challenges SpaceX will face getting astronauts to Mars by about 2025? links to Elon Musk's position paper Making Humans a Multi-Planetary Species ...
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1answer
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Saturn V ascent guidance (simulation)

A while ago, I did a Saturn V ascent simulation in Matlab. The catering for drag, gravity and thrust vectors and mass depletion worked well, but I struggled to implement ascent guidance. I duplicated ...
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3answers
348 views

Is there a demand for large liquid engines (> 5 MN)?

In other words, why was the F1 rocket engine programme stopped? Is there a sense that solid motors can take care of high thrust cases in a better way? Or is it an unfortunate fallout of the end of the ...
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2answers
577 views

Was CNC milling used in the 1960's for making the Apollo/Saturn rocket engines?

As far as I know, CNC machining was being used in the aerospace industry in the 1960s. Were such machines use for the F1 engines?
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1answer
176 views

Project High Water and the lightning-like radio disturbances it caused

The two Project High Water launches caused the release of 95 tons of water in the ionosphere. For both of these experiments, the resulting ice clouds expanded to several miles in diameter and ...
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4answers
7k views

Why was this Saturn rocket elevated for launch?

This is an image of a Saturn on the launch pad on July 20th 1973 It appears to be resting on an elevated platform that raises it significantly off the ground. Why was this done? It seems like a lot ...
7
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1answer
601 views

To what extent did Apollo payload mass drive Saturn capability?

Uwe wrote in an answer that The possible payload of Saturn V was carefully planed for the whole mission, but the difference of the payloads of the missions Apollo 11 and 17 was less than 3000 kg. ...
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2answers
9k views

Were the Saturn V construction plans destroyed?

Over the years, I often heard that we would not be able to build a Saturn V again since its construction plans actually have been destroyed. Then again, I heard that there are copies on microfiche or ...
6
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2answers
601 views

How had the Saturn V lifting capacity changed throughout the Apollo program?

How had the Saturn V lifting capacity changed throughout the Apollo program? The Apollo 11 mission seems to have been very lightly loaded, enjoying only a short time on the surface, single EVA, and no ...
16
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3answers
2k views

S-I, S-II, S-IV; what happened to III?

Stages of the Apollo stack (at least the configuration that landed humans on the Moon) are identified as S-IC, S-II, and S-IVB for the first, second, and third stages. There's no S-III. Why the gap in ...
3
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1answer
723 views

Is it possible to estimate the nozzle characteristics of the Rocketdyne HG3 engine?

Boeing and the Marshall Space Flight Centre brought to pass many studies of improved Saturn V launch vehicles. The rockets proposed under the MLV and ELV projects would feature longer stages for more ...
5
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1answer
289 views

Was a large-nozzle variant of the J-2 ever considered?

The J-2 engine used on the upper stages of the Saturn launchers has a specific impulse in vacuum of 421 seconds. This is substantially lower than that of the smaller RL10, 440-460 seconds depending on ...
3
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1answer
236 views

How is the Rocketdyne J-2S area ratio larger than that of the J-2?

The standard J-2 engine measures 3.38 metres in total length, with a nozzle exit diameter of 2.03 metres, to support its 27.5:1 expansion ratio. However, these dimensions are apparently identical for ...
6
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1answer
501 views

How does the efficiency of the Rocketdyne F-1A compare to the F-1?

The Rocketdyne F-1 was to be updated with a new turbopump and gas generator assembly, without other major component redesign. This was to result in a thrust increase from around 1,522,000 pounds force ...
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1answer
540 views

What was the maximum thrust of the Rocketdyne F-1 engine?

Reading through several old reports, I have come across studies conducted by MSFC on improved Saturn V designs with greater payload capacity, and with uprated engines. As a result of increasing launch ...
30
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7answers
7k views

Why weren't Saturn V and the Soviet N-1 Moon rockets made larger in order to simplify Lunar missions?

During the Apollo missions the Lunar lander was separated, turned around and docked during flight. And the command module was left in Lunar orbit during the surface mission. The Soviets planned to ...
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2answers
458 views

When was the second production run of the Saturn V cancelled?

The Saturn V had an initial production run of 15 vehicles (plus 3 test articles). Twelve were used for Apollo 4, 6, and 8-17, one was used for Skylab, the components of the other two are on display in ...
6
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3answers
2k views

Combination of liquid hydrogen and liquid oxygen

For the Apollo missions in the 1960s, NASA used a combination of kerosene and liquid oxygen to get the rockets out of Earth's atmosphere. Why did they do that? If you look at the statistics, the ...
11
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3answers
653 views

What would be the configuration and performance for Saturn V with all stages RP-1/LOX?

Saturn V had RP-1/LOX 1st stage with 5 F-1 rocket engines. The 2nd and 3rd stage used LH2/LOX J-2 rocket engines, 5 and 1 respectively. At that time NASA had an advantage to launch heavy payloads ...
8
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1answer
201 views

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 ...
4
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1answer
428 views

What is a rocket engine “burp”, and why does it happen?

I've seen the term "burp" used, for example, in a description of the Saturn V F-1 engine start sequence (or what is perhaps the source document - see pdf p 62, source page 4-9). What does it mean? ...