Alsephina@lemmy.ml to Not the Onion@lemmy.mlEnglish · 8 months agoChina plans to build a giant rail gun to launch hypersonic planes into spacewww.scmp.comexternal-linkmessage-square34fedilinkarrow-up10arrow-down10cross-posted to: [email protected][email protected]
arrow-up10arrow-down1external-linkChina plans to build a giant rail gun to launch hypersonic planes into spacewww.scmp.comAlsephina@lemmy.ml to Not the Onion@lemmy.mlEnglish · 8 months agomessage-square34fedilinkcross-posted to: [email protected][email protected]
minus-squareTar_Alcaran@sh.itjust.workslinkfedilinkarrow-up0·8 months ago How did you calculate 8200 m/s? I looked at a delta-v chart, which mostly list 9000-10000 for 250km orbits. I subtracted 10% from the one on Wikipedia for an absolute minimum. Also your length of the railgun exceeds the atmosphere, That rather speaks against the concept, wouldn’t you say?
I looked at a delta-v chart, which mostly list 9000-10000 for 250km orbits. I subtracted 10% from the one on Wikipedia for an absolute minimum.
That rather speaks against the concept, wouldn’t you say?