Editing Talk:1461: Payloads
Please sign your posts with ~~~~ |
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.
The edit can be undone.
Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision | Your text | ||
Line 80: | Line 80: | ||
:::Ok, I'm just about following you I think! So assuming we are launching to orbit, we have to get to 23,600km, at which point gravity is considerably reduced. We definately have to take into account {{w|Space elevator#Apparent gravitational field|change in gravity}} as our horses move up the cable. | :::Ok, I'm just about following you I think! So assuming we are launching to orbit, we have to get to 23,600km, at which point gravity is considerably reduced. We definately have to take into account {{w|Space elevator#Apparent gravitational field|change in gravity}} as our horses move up the cable. | ||
β | :::I did some maths, and I believe it takes 19.9GJ to get a 450kg horse to 23,600km. That is | + | :::I did some maths, and I believe it takes 19.9GJ to get a 450kg horse to 23,600km. That is mgh, but taking into account the change in gravity. At 1 Watt, thats gonna take 631 years. Our 500 horses per year solar plant needs to output 315kW (High, but possible). Our 10 horses per minute power station would need to output 3.32GW, so a decent nuclear facility. Once the Three Gorges Dam in China is running at full capacity (22.5GW), it could be launching 68 horses per minute. Running constantly at full capacity, we could rid the world of horses (est 58 million) in under two years. --[[User:Pudder|Pudder]] ([[User talk:Pudder|talk]]) 11:09, 19 December 2014 (UTC) |
:::I confirmed the height of 23 600 km with my own calculations; my result is about 189 km altitude at perigeum, and 996 km for 24 350 km (750 km higher, as you wrote). My code seems consistent as entering geostationary orbit altitude results in geostationary orbit. Anyway, I think that 19.9 GJ is slightly wrong - [http://www.wolframalpha.com/input/?i=G*earth+mass*450+kg+*+(1%2Fearth+radius-1%2F(earth+radius%2B23600km)) I entered it into Wolfram], and it showet a little more. This results in 350 kW and 3.7 GW for backyard solar panels and power plant, respectively. [[Special:Contributions/162.158.92.100|162.158.92.100]] 22:20, 28 January 2017 (UTC) | :::I confirmed the height of 23 600 km with my own calculations; my result is about 189 km altitude at perigeum, and 996 km for 24 350 km (750 km higher, as you wrote). My code seems consistent as entering geostationary orbit altitude results in geostationary orbit. Anyway, I think that 19.9 GJ is slightly wrong - [http://www.wolframalpha.com/input/?i=G*earth+mass*450+kg+*+(1%2Fearth+radius-1%2F(earth+radius%2B23600km)) I entered it into Wolfram], and it showet a little more. This results in 350 kW and 3.7 GW for backyard solar panels and power plant, respectively. [[Special:Contributions/162.158.92.100|162.158.92.100]] 22:20, 28 January 2017 (UTC) |