Heinlein works where slide rule is used to calculate navigation in space
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A question on Space.SE; Is it possible to navigate space travel with no computer? got me looking for a list of works where Heinlein solely relied on a slide rule to calculate navigation in space.
I came up with The Rolling Stones but I am looking for a comprehensive list.
robert-a-heinlein
edited Nov 16 at 15:24
TheLethalCarrot
37.4k15202247
asked Nov 16 at 14:21
James Jenkins
3,49532554
add a comment |
up vote
12
down vote
favorite
A question on Space.SE; Is it possible to navigate space travel with no computer? got me looking for a list of works where Heinlein solely relied on a slide rule to calculate navigation in space.
I came up with The Rolling Stones but I am looking for a comprehensive list.
robert-a-heinlein
edited Nov 16 at 15:24
TheLethalCarrot
37.4k15202247
asked Nov 16 at 14:21
James Jenkins
3,49532554
11
To close voters: list should be small enough since it's restricted to works by Heinlein.
– SQB
Nov 16 at 14:59
2
Agree @SQB - scifi.meta.stackexchange.com/questions/2638/… | scifi.meta.stackexchange.com/questions/1465/…
– NKCampbell
Nov 16 at 15:16
3
@SQB I agree too -- every book Heinlein wrote would only be a list of 40-50 titles. An few of those had slide rules used for astrogation. Heinlein was an engineer, he was well aware of the precision limits of a slipstick.
– Zeiss Ikon
Nov 16 at 16:42
I think I remember that there is a computer in The Rolling Stones, just as a side note--appears near the beginning (when they are buying the ship, overhauling it, or leaving Earth/moon area)--I think they mention it has a three lobe brain and runs each calculation three times, to check for errors.
– user3067860
Nov 16 at 19:40
1
It's not Heinlein, but the Apollo 13 movie showed liberal use of slide rules in Mission Control.
– Blackwood
Nov 16 at 20:58
add a comment |
up vote
12
down vote
favorite
up vote
12
down vote
favorite
A question on Space.SE; Is it possible to navigate space travel with no computer? got me looking for a list of works where Heinlein solely relied on a slide rule to calculate navigation in space.
I came up with The Rolling Stones but I am looking for a comprehensive list.
robert-a-heinlein
edited Nov 16 at 15:24
TheLethalCarrot
37.4k15202247
asked Nov 16 at 14:21
James Jenkins
3,49532554
A question on Space.SE; Is it possible to navigate space travel with no computer? got me looking for a list of works where Heinlein solely relied on a slide rule to calculate navigation in space.
I came up with The Rolling Stones but I am looking for a comprehensive list.
robert-a-heinlein
robert-a-heinlein
edited Nov 16 at 15:24
TheLethalCarrot
37.4k15202247
asked Nov 16 at 14:21
James Jenkins
3,49532554
edited Nov 16 at 15:24
TheLethalCarrot
37.4k15202247
asked Nov 16 at 14:21
James Jenkins
3,49532554
edited Nov 16 at 15:24
TheLethalCarrot
37.4k15202247
edited Nov 16 at 15:24
TheLethalCarrot
37.4k15202247
edited Nov 16 at 15:24
TheLethalCarrot
37.4k15202247
37.4k15202247
asked Nov 16 at 14:21
James Jenkins
3,49532554
asked Nov 16 at 14:21
James Jenkins
3,49532554
asked Nov 16 at 14:21
James Jenkins
3,49532554
3,49532554
11
To close voters: list should be small enough since it's restricted to works by Heinlein.
– SQB
Nov 16 at 14:59
2
Agree @SQB - scifi.meta.stackexchange.com/questions/2638/… | scifi.meta.stackexchange.com/questions/1465/…
– NKCampbell
Nov 16 at 15:16
3
@SQB I agree too -- every book Heinlein wrote would only be a list of 40-50 titles. An few of those had slide rules used for astrogation. Heinlein was an engineer, he was well aware of the precision limits of a slipstick.
– Zeiss Ikon
Nov 16 at 16:42
I think I remember that there is a computer in The Rolling Stones, just as a side note--appears near the beginning (when they are buying the ship, overhauling it, or leaving Earth/moon area)--I think they mention it has a three lobe brain and runs each calculation three times, to check for errors.
– user3067860
Nov 16 at 19:40
1
It's not Heinlein, but the Apollo 13 movie showed liberal use of slide rules in Mission Control.
– Blackwood
Nov 16 at 20:58
add a comment |
11
To close voters: list should be small enough since it's restricted to works by Heinlein.
– SQB
Nov 16 at 14:59
2
Agree @SQB - scifi.meta.stackexchange.com/questions/2638/… | scifi.meta.stackexchange.com/questions/1465/…
– NKCampbell
Nov 16 at 15:16
3
@SQB I agree too -- every book Heinlein wrote would only be a list of 40-50 titles. An few of those had slide rules used for astrogation. Heinlein was an engineer, he was well aware of the precision limits of a slipstick.
– Zeiss Ikon
Nov 16 at 16:42
I think I remember that there is a computer in The Rolling Stones, just as a side note--appears near the beginning (when they are buying the ship, overhauling it, or leaving Earth/moon area)--I think they mention it has a three lobe brain and runs each calculation three times, to check for errors.
– user3067860
Nov 16 at 19:40
1
It's not Heinlein, but the Apollo 13 movie showed liberal use of slide rules in Mission Control.
– Blackwood
Nov 16 at 20:58
11
11
To close voters: list should be small enough since it's restricted to works by Heinlein.
– SQB
Nov 16 at 14:59
To close voters: list should be small enough since it's restricted to works by Heinlein.
– SQB
Nov 16 at 14:59
2
2
Agree @SQB - scifi.meta.stackexchange.com/questions/2638/… | scifi.meta.stackexchange.com/questions/1465/…
– NKCampbell
Nov 16 at 15:16
Agree @SQB - scifi.meta.stackexchange.com/questions/2638/… | scifi.meta.stackexchange.com/questions/1465/…
– NKCampbell
Nov 16 at 15:16
3
3
@SQB I agree too -- every book Heinlein wrote would only be a list of 40-50 titles. An few of those had slide rules used for astrogation. Heinlein was an engineer, he was well aware of the precision limits of a slipstick.
– Zeiss Ikon
Nov 16 at 16:42
@SQB I agree too -- every book Heinlein wrote would only be a list of 40-50 titles. An few of those had slide rules used for astrogation. Heinlein was an engineer, he was well aware of the precision limits of a slipstick.
– Zeiss Ikon
Nov 16 at 16:42
I think I remember that there is a computer in The Rolling Stones, just as a side note--appears near the beginning (when they are buying the ship, overhauling it, or leaving Earth/moon area)--I think they mention it has a three lobe brain and runs each calculation three times, to check for errors.
– user3067860
Nov 16 at 19:40
I think I remember that there is a computer in The Rolling Stones, just as a side note--appears near the beginning (when they are buying the ship, overhauling it, or leaving Earth/moon area)--I think they mention it has a three lobe brain and runs each calculation three times, to check for errors.
– user3067860
Nov 16 at 19:40
1
1
It's not Heinlein, but the Apollo 13 movie showed liberal use of slide rules in Mission Control.
– Blackwood
Nov 16 at 20:58
It's not Heinlein, but the Apollo 13 movie showed liberal use of slide rules in Mission Control.
– Blackwood
Nov 16 at 20:58
add a comment |
2 Answers
2
active
oldest
votes
up vote
13
down vote
Rocket Ship Galileo made references to using a slide rule -- as well as mentioning how the limited precision meant you had to have a human pilot rather than being able to "cut a cam" for an autopilot to do the job.
I think I recall Space Cadet also showing slide rules in use for piloting -- and these are the only books of Heinlein's that I recall going "inside the cockpit" enough to show that kind of detail. Have Space Suit Will Travel showed slide rules in several important scenes, but the characters never actually used them.
answered Nov 16 at 14:31
Zeiss Ikon
8,32311547
6
Well, this doesn’t exactly count, but as I recall Starman Jones used books of log tables. Its similar at any rate.
– Broklynite
Nov 16 at 14:59
3
The difference with books of tables (given the described size of the volumes) is at least 2-3 more digits precision vs. even a 14" metal slide rule (3.5 digits at very best, 2.5 if you're working in the 7-8-9 mantissa range).
– Zeiss Ikon
Nov 16 at 15:05
add a comment |
up vote
12
down vote
In Destination Moon it is at least implied that a slide rule is being used to calculate the trajectory needed to arrive at the Moon. The relevant part of the story is:
“Huh? I wasted reaction mass, so we’re going too fast? That doesn’t make sense." Barnes hooked a foot into the legs of the stool to anchor himself, and did a rough run-through of the problem with slide rule and logarithm table. “Well, boil me in a bucket!" He added humbly, “Doc, I shouldn’t have asked to be skipper. I don’t know enough."
Corley’s worried features softened. “Don’t feel that way, Jim. Nobody knows enough — yet. God knows I’ve put in enough time on theory, but I went ahead and urged you to make the blunder."
“Doc, how important is this? The error is less than one percent. I’d guess that we would reach the Moon about an hour early.”
“And roughly you’d be wrong. Initial speed is critical, Jim; you know that!”
“How critical? When do we reach the Moon?”
Corley looked glumly at the pitiful tools he had with him—a twenty-inch log-log slide rule, seven place tables, a Nautical Almanac, and an office-type calculator which bore the relation to a “giant brain” that a firecracker does to an A-bomb. “I don’t know. I’ll have to put it up to Hastings.” He threw his pencil at the desk top; it bounced off and floated away. “The question is: do we get there at’all?”
In Starman Jones there is no explicit metion of a slide rule being used for astrogation, however there is an implicit reference to it:
There was little to take. Groping in the dark he found the rucksack he used for hunting hikes and stuffed into it his other shirt and his socks. He added Uncle Chet’s circular astrogation slide rule and the piece of volcanic glass his uncle had brought back for him from the Moon. His citizen’s identification card, his toothbrush, and his father’s razor—not that he needed that very often—about completed the plunder.
answered Nov 16 at 18:06
John Rennie
27.5k277126
I don't think the slide rule was used for primary calculations, it was the people aboard the rocket trying to figure how badly off they were after overboosting by 1%, without having direct contact with ground computers. Computers were in routine use where a building-sized machine could be used by the time this movie was written/filmed.
– Zeiss Ikon
Nov 16 at 18:20
A mechanical integrator would probably be more useful than a slide rule here. We are solving systems of differential equations, don't we?
– David Tonhofer
Nov 16 at 23:26
@DavidTonhofer Those and their electronic upgrades might well be the "giant brains" Heinlein refers to in the passage quoted above.
– Zeiss Ikon
Nov 17 at 20:05
@ZeissIkon Quite likely. I love these contraptions. While Bush's Analyzer of ~1930 is ridiculously called a "super mind" in this recolored promo, the US Navy is more realistic in 1953 about its mechanical analog computers: they are just gears in a box. Being forced to know the ins and outs of the machine breeds realism.
– David Tonhofer
Nov 18 at 1:02
Here is an interesting answer on whether manual in-space computations are possible for Apollo ("no").
– David Tonhofer
Nov 18 at 1:11
add a comment |
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
13
down vote
Rocket Ship Galileo made references to using a slide rule -- as well as mentioning how the limited precision meant you had to have a human pilot rather than being able to "cut a cam" for an autopilot to do the job.
I think I recall Space Cadet also showing slide rules in use for piloting -- and these are the only books of Heinlein's that I recall going "inside the cockpit" enough to show that kind of detail. Have Space Suit Will Travel showed slide rules in several important scenes, but the characters never actually used them.
answered Nov 16 at 14:31
Zeiss Ikon
8,32311547
6
Well, this doesn’t exactly count, but as I recall Starman Jones used books of log tables. Its similar at any rate.
– Broklynite
Nov 16 at 14:59
3
The difference with books of tables (given the described size of the volumes) is at least 2-3 more digits precision vs. even a 14" metal slide rule (3.5 digits at very best, 2.5 if you're working in the 7-8-9 mantissa range).
– Zeiss Ikon
Nov 16 at 15:05
add a comment |
up vote
13
down vote
Rocket Ship Galileo made references to using a slide rule -- as well as mentioning how the limited precision meant you had to have a human pilot rather than being able to "cut a cam" for an autopilot to do the job.
I think I recall Space Cadet also showing slide rules in use for piloting -- and these are the only books of Heinlein's that I recall going "inside the cockpit" enough to show that kind of detail. Have Space Suit Will Travel showed slide rules in several important scenes, but the characters never actually used them.
answered Nov 16 at 14:31
Zeiss Ikon
8,32311547
6
Well, this doesn’t exactly count, but as I recall Starman Jones used books of log tables. Its similar at any rate.
– Broklynite
Nov 16 at 14:59
3
The difference with books of tables (given the described size of the volumes) is at least 2-3 more digits precision vs. even a 14" metal slide rule (3.5 digits at very best, 2.5 if you're working in the 7-8-9 mantissa range).
– Zeiss Ikon
Nov 16 at 15:05
add a comment |
up vote
13
down vote
up vote
13
down vote
Rocket Ship Galileo made references to using a slide rule -- as well as mentioning how the limited precision meant you had to have a human pilot rather than being able to "cut a cam" for an autopilot to do the job.
I think I recall Space Cadet also showing slide rules in use for piloting -- and these are the only books of Heinlein's that I recall going "inside the cockpit" enough to show that kind of detail. Have Space Suit Will Travel showed slide rules in several important scenes, but the characters never actually used them.
answered Nov 16 at 14:31
Zeiss Ikon
8,32311547
Rocket Ship Galileo made references to using a slide rule -- as well as mentioning how the limited precision meant you had to have a human pilot rather than being able to "cut a cam" for an autopilot to do the job.
I think I recall Space Cadet also showing slide rules in use for piloting -- and these are the only books of Heinlein's that I recall going "inside the cockpit" enough to show that kind of detail. Have Space Suit Will Travel showed slide rules in several important scenes, but the characters never actually used them.
answered Nov 16 at 14:31
Zeiss Ikon
8,32311547
answered Nov 16 at 14:31
Zeiss Ikon
8,32311547
answered Nov 16 at 14:31
Zeiss Ikon
8,32311547
answered Nov 16 at 14:31
Zeiss Ikon
8,32311547
8,32311547
6
Well, this doesn’t exactly count, but as I recall Starman Jones used books of log tables. Its similar at any rate.
– Broklynite
Nov 16 at 14:59
3
The difference with books of tables (given the described size of the volumes) is at least 2-3 more digits precision vs. even a 14" metal slide rule (3.5 digits at very best, 2.5 if you're working in the 7-8-9 mantissa range).
– Zeiss Ikon
Nov 16 at 15:05
add a comment |
6
Well, this doesn’t exactly count, but as I recall Starman Jones used books of log tables. Its similar at any rate.
– Broklynite
Nov 16 at 14:59
3
The difference with books of tables (given the described size of the volumes) is at least 2-3 more digits precision vs. even a 14" metal slide rule (3.5 digits at very best, 2.5 if you're working in the 7-8-9 mantissa range).
– Zeiss Ikon
Nov 16 at 15:05
6
6
Well, this doesn’t exactly count, but as I recall Starman Jones used books of log tables. Its similar at any rate.
– Broklynite
Nov 16 at 14:59
Well, this doesn’t exactly count, but as I recall Starman Jones used books of log tables. Its similar at any rate.
– Broklynite
Nov 16 at 14:59
3
3
The difference with books of tables (given the described size of the volumes) is at least 2-3 more digits precision vs. even a 14" metal slide rule (3.5 digits at very best, 2.5 if you're working in the 7-8-9 mantissa range).
– Zeiss Ikon
Nov 16 at 15:05
The difference with books of tables (given the described size of the volumes) is at least 2-3 more digits precision vs. even a 14" metal slide rule (3.5 digits at very best, 2.5 if you're working in the 7-8-9 mantissa range).
– Zeiss Ikon
Nov 16 at 15:05
add a comment |
up vote
12
down vote
In Destination Moon it is at least implied that a slide rule is being used to calculate the trajectory needed to arrive at the Moon. The relevant part of the story is:
“Huh? I wasted reaction mass, so we’re going too fast? That doesn’t make sense." Barnes hooked a foot into the legs of the stool to anchor himself, and did a rough run-through of the problem with slide rule and logarithm table. “Well, boil me in a bucket!" He added humbly, “Doc, I shouldn’t have asked to be skipper. I don’t know enough."
Corley’s worried features softened. “Don’t feel that way, Jim. Nobody knows enough — yet. God knows I’ve put in enough time on theory, but I went ahead and urged you to make the blunder."
“Doc, how important is this? The error is less than one percent. I’d guess that we would reach the Moon about an hour early.”
“And roughly you’d be wrong. Initial speed is critical, Jim; you know that!”
“How critical? When do we reach the Moon?”
Corley looked glumly at the pitiful tools he had with him—a twenty-inch log-log slide rule, seven place tables, a Nautical Almanac, and an office-type calculator which bore the relation to a “giant brain” that a firecracker does to an A-bomb. “I don’t know. I’ll have to put it up to Hastings.” He threw his pencil at the desk top; it bounced off and floated away. “The question is: do we get there at’all?”
In Starman Jones there is no explicit metion of a slide rule being used for astrogation, however there is an implicit reference to it:
There was little to take. Groping in the dark he found the rucksack he used for hunting hikes and stuffed into it his other shirt and his socks. He added Uncle Chet’s circular astrogation slide rule and the piece of volcanic glass his uncle had brought back for him from the Moon. His citizen’s identification card, his toothbrush, and his father’s razor—not that he needed that very often—about completed the plunder.
answered Nov 16 at 18:06
John Rennie
27.5k277126
I don't think the slide rule was used for primary calculations, it was the people aboard the rocket trying to figure how badly off they were after overboosting by 1%, without having direct contact with ground computers. Computers were in routine use where a building-sized machine could be used by the time this movie was written/filmed.
– Zeiss Ikon
Nov 16 at 18:20
A mechanical integrator would probably be more useful than a slide rule here. We are solving systems of differential equations, don't we?
– David Tonhofer
Nov 16 at 23:26
@DavidTonhofer Those and their electronic upgrades might well be the "giant brains" Heinlein refers to in the passage quoted above.
– Zeiss Ikon
Nov 17 at 20:05
@ZeissIkon Quite likely. I love these contraptions. While Bush's Analyzer of ~1930 is ridiculously called a "super mind" in this recolored promo, the US Navy is more realistic in 1953 about its mechanical analog computers: they are just gears in a box. Being forced to know the ins and outs of the machine breeds realism.
– David Tonhofer
Nov 18 at 1:02
Here is an interesting answer on whether manual in-space computations are possible for Apollo ("no").
– David Tonhofer
Nov 18 at 1:11
add a comment |
up vote
12
down vote
In Destination Moon it is at least implied that a slide rule is being used to calculate the trajectory needed to arrive at the Moon. The relevant part of the story is:
“Huh? I wasted reaction mass, so we’re going too fast? That doesn’t make sense." Barnes hooked a foot into the legs of the stool to anchor himself, and did a rough run-through of the problem with slide rule and logarithm table. “Well, boil me in a bucket!" He added humbly, “Doc, I shouldn’t have asked to be skipper. I don’t know enough."
Corley’s worried features softened. “Don’t feel that way, Jim. Nobody knows enough — yet. God knows I’ve put in enough time on theory, but I went ahead and urged you to make the blunder."
“Doc, how important is this? The error is less than one percent. I’d guess that we would reach the Moon about an hour early.”
“And roughly you’d be wrong. Initial speed is critical, Jim; you know that!”
“How critical? When do we reach the Moon?”
Corley looked glumly at the pitiful tools he had with him—a twenty-inch log-log slide rule, seven place tables, a Nautical Almanac, and an office-type calculator which bore the relation to a “giant brain” that a firecracker does to an A-bomb. “I don’t know. I’ll have to put it up to Hastings.” He threw his pencil at the desk top; it bounced off and floated away. “The question is: do we get there at’all?”
In Starman Jones there is no explicit metion of a slide rule being used for astrogation, however there is an implicit reference to it:
There was little to take. Groping in the dark he found the rucksack he used for hunting hikes and stuffed into it his other shirt and his socks. He added Uncle Chet’s circular astrogation slide rule and the piece of volcanic glass his uncle had brought back for him from the Moon. His citizen’s identification card, his toothbrush, and his father’s razor—not that he needed that very often—about completed the plunder.
answered Nov 16 at 18:06
John Rennie
27.5k277126
I don't think the slide rule was used for primary calculations, it was the people aboard the rocket trying to figure how badly off they were after overboosting by 1%, without having direct contact with ground computers. Computers were in routine use where a building-sized machine could be used by the time this movie was written/filmed.
– Zeiss Ikon
Nov 16 at 18:20
A mechanical integrator would probably be more useful than a slide rule here. We are solving systems of differential equations, don't we?
– David Tonhofer
Nov 16 at 23:26
@DavidTonhofer Those and their electronic upgrades might well be the "giant brains" Heinlein refers to in the passage quoted above.
– Zeiss Ikon
Nov 17 at 20:05
@ZeissIkon Quite likely. I love these contraptions. While Bush's Analyzer of ~1930 is ridiculously called a "super mind" in this recolored promo, the US Navy is more realistic in 1953 about its mechanical analog computers: they are just gears in a box. Being forced to know the ins and outs of the machine breeds realism.
– David Tonhofer
Nov 18 at 1:02
Here is an interesting answer on whether manual in-space computations are possible for Apollo ("no").
– David Tonhofer
Nov 18 at 1:11
add a comment |
up vote
12
down vote
up vote
12
down vote
In Destination Moon it is at least implied that a slide rule is being used to calculate the trajectory needed to arrive at the Moon. The relevant part of the story is:
“Huh? I wasted reaction mass, so we’re going too fast? That doesn’t make sense." Barnes hooked a foot into the legs of the stool to anchor himself, and did a rough run-through of the problem with slide rule and logarithm table. “Well, boil me in a bucket!" He added humbly, “Doc, I shouldn’t have asked to be skipper. I don’t know enough."
Corley’s worried features softened. “Don’t feel that way, Jim. Nobody knows enough — yet. God knows I’ve put in enough time on theory, but I went ahead and urged you to make the blunder."
“Doc, how important is this? The error is less than one percent. I’d guess that we would reach the Moon about an hour early.”
“And roughly you’d be wrong. Initial speed is critical, Jim; you know that!”
“How critical? When do we reach the Moon?”
Corley looked glumly at the pitiful tools he had with him—a twenty-inch log-log slide rule, seven place tables, a Nautical Almanac, and an office-type calculator which bore the relation to a “giant brain” that a firecracker does to an A-bomb. “I don’t know. I’ll have to put it up to Hastings.” He threw his pencil at the desk top; it bounced off and floated away. “The question is: do we get there at’all?”
In Starman Jones there is no explicit metion of a slide rule being used for astrogation, however there is an implicit reference to it:
There was little to take. Groping in the dark he found the rucksack he used for hunting hikes and stuffed into it his other shirt and his socks. He added Uncle Chet’s circular astrogation slide rule and the piece of volcanic glass his uncle had brought back for him from the Moon. His citizen’s identification card, his toothbrush, and his father’s razor—not that he needed that very often—about completed the plunder.
answered Nov 16 at 18:06
John Rennie
27.5k277126
In Destination Moon it is at least implied that a slide rule is being used to calculate the trajectory needed to arrive at the Moon. The relevant part of the story is:
“Huh? I wasted reaction mass, so we’re going too fast? That doesn’t make sense." Barnes hooked a foot into the legs of the stool to anchor himself, and did a rough run-through of the problem with slide rule and logarithm table. “Well, boil me in a bucket!" He added humbly, “Doc, I shouldn’t have asked to be skipper. I don’t know enough."
Corley’s worried features softened. “Don’t feel that way, Jim. Nobody knows enough — yet. God knows I’ve put in enough time on theory, but I went ahead and urged you to make the blunder."
“Doc, how important is this? The error is less than one percent. I’d guess that we would reach the Moon about an hour early.”
“And roughly you’d be wrong. Initial speed is critical, Jim; you know that!”
“How critical? When do we reach the Moon?”
Corley looked glumly at the pitiful tools he had with him—a twenty-inch log-log slide rule, seven place tables, a Nautical Almanac, and an office-type calculator which bore the relation to a “giant brain” that a firecracker does to an A-bomb. “I don’t know. I’ll have to put it up to Hastings.” He threw his pencil at the desk top; it bounced off and floated away. “The question is: do we get there at’all?”
In Starman Jones there is no explicit metion of a slide rule being used for astrogation, however there is an implicit reference to it:
There was little to take. Groping in the dark he found the rucksack he used for hunting hikes and stuffed into it his other shirt and his socks. He added Uncle Chet’s circular astrogation slide rule and the piece of volcanic glass his uncle had brought back for him from the Moon. His citizen’s identification card, his toothbrush, and his father’s razor—not that he needed that very often—about completed the plunder.
answered Nov 16 at 18:06
John Rennie
27.5k277126
edited Nov 16 at 18:22
answered Nov 16 at 18:06
John Rennie
27.5k277126
answered Nov 16 at 18:06
John Rennie
27.5k277126
answered Nov 16 at 18:06
John Rennie
27.5k277126
27.5k277126
I don't think the slide rule was used for primary calculations, it was the people aboard the rocket trying to figure how badly off they were after overboosting by 1%, without having direct contact with ground computers. Computers were in routine use where a building-sized machine could be used by the time this movie was written/filmed.
– Zeiss Ikon
Nov 16 at 18:20
A mechanical integrator would probably be more useful than a slide rule here. We are solving systems of differential equations, don't we?
– David Tonhofer
Nov 16 at 23:26
@DavidTonhofer Those and their electronic upgrades might well be the "giant brains" Heinlein refers to in the passage quoted above.
– Zeiss Ikon
Nov 17 at 20:05
@ZeissIkon Quite likely. I love these contraptions. While Bush's Analyzer of ~1930 is ridiculously called a "super mind" in this recolored promo, the US Navy is more realistic in 1953 about its mechanical analog computers: they are just gears in a box. Being forced to know the ins and outs of the machine breeds realism.
– David Tonhofer
Nov 18 at 1:02
Here is an interesting answer on whether manual in-space computations are possible for Apollo ("no").
– David Tonhofer
Nov 18 at 1:11
add a comment |
I don't think the slide rule was used for primary calculations, it was the people aboard the rocket trying to figure how badly off they were after overboosting by 1%, without having direct contact with ground computers. Computers were in routine use where a building-sized machine could be used by the time this movie was written/filmed.
– Zeiss Ikon
Nov 16 at 18:20
A mechanical integrator would probably be more useful than a slide rule here. We are solving systems of differential equations, don't we?
– David Tonhofer
Nov 16 at 23:26
@DavidTonhofer Those and their electronic upgrades might well be the "giant brains" Heinlein refers to in the passage quoted above.
– Zeiss Ikon
Nov 17 at 20:05
@ZeissIkon Quite likely. I love these contraptions. While Bush's Analyzer of ~1930 is ridiculously called a "super mind" in this recolored promo, the US Navy is more realistic in 1953 about its mechanical analog computers: they are just gears in a box. Being forced to know the ins and outs of the machine breeds realism.
– David Tonhofer
Nov 18 at 1:02
Here is an interesting answer on whether manual in-space computations are possible for Apollo ("no").
– David Tonhofer
Nov 18 at 1:11
I don't think the slide rule was used for primary calculations, it was the people aboard the rocket trying to figure how badly off they were after overboosting by 1%, without having direct contact with ground computers. Computers were in routine use where a building-sized machine could be used by the time this movie was written/filmed.
– Zeiss Ikon
Nov 16 at 18:20
I don't think the slide rule was used for primary calculations, it was the people aboard the rocket trying to figure how badly off they were after overboosting by 1%, without having direct contact with ground computers. Computers were in routine use where a building-sized machine could be used by the time this movie was written/filmed.
– Zeiss Ikon
Nov 16 at 18:20
A mechanical integrator would probably be more useful than a slide rule here. We are solving systems of differential equations, don't we?
– David Tonhofer
Nov 16 at 23:26
A mechanical integrator would probably be more useful than a slide rule here. We are solving systems of differential equations, don't we?
– David Tonhofer
Nov 16 at 23:26
@DavidTonhofer Those and their electronic upgrades might well be the "giant brains" Heinlein refers to in the passage quoted above.
– Zeiss Ikon
Nov 17 at 20:05
@DavidTonhofer Those and their electronic upgrades might well be the "giant brains" Heinlein refers to in the passage quoted above.
– Zeiss Ikon
Nov 17 at 20:05
@ZeissIkon Quite likely. I love these contraptions. While Bush's Analyzer of ~1930 is ridiculously called a "super mind" in this recolored promo, the US Navy is more realistic in 1953 about its mechanical analog computers: they are just gears in a box. Being forced to know the ins and outs of the machine breeds realism.
– David Tonhofer
Nov 18 at 1:02
@ZeissIkon Quite likely. I love these contraptions. While Bush's Analyzer of ~1930 is ridiculously called a "super mind" in this recolored promo, the US Navy is more realistic in 1953 about its mechanical analog computers: they are just gears in a box. Being forced to know the ins and outs of the machine breeds realism.
– David Tonhofer
Nov 18 at 1:02
Here is an interesting answer on whether manual in-space computations are possible for Apollo ("no").
– David Tonhofer
Nov 18 at 1:11
Here is an interesting answer on whether manual in-space computations are possible for Apollo ("no").
– David Tonhofer
Nov 18 at 1:11
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11
To close voters: list should be small enough since it's restricted to works by Heinlein.
– SQB
Nov 16 at 14:59
2
Agree @SQB - scifi.meta.stackexchange.com/questions/2638/… | scifi.meta.stackexchange.com/questions/1465/…
– NKCampbell
Nov 16 at 15:16
3
@SQB I agree too -- every book Heinlein wrote would only be a list of 40-50 titles. An few of those had slide rules used for astrogation. Heinlein was an engineer, he was well aware of the precision limits of a slipstick.
– Zeiss Ikon
Nov 16 at 16:42
I think I remember that there is a computer in The Rolling Stones, just as a side note--appears near the beginning (when they are buying the ship, overhauling it, or leaving Earth/moon area)--I think they mention it has a three lobe brain and runs each calculation three times, to check for errors.
– user3067860
Nov 16 at 19:40
1
It's not Heinlein, but the Apollo 13 movie showed liberal use of slide rules in Mission Control.
– Blackwood
Nov 16 at 20:58