Just musing about how dangerous the technology, plans etc of these private rockets are if they fall into the hand of states such as Iran, Syria etc.. ?
Quote from: duane on 05/24/2009 02:59 amMy question is how much of a step up in technology or avionics etc would need to go into the rocket system to convert it to a small ICBM ? None. A space launch vehicle is just a ICBM with longer range.
My question is how much of a step up in technology or avionics etc would need to go into the rocket system to convert it to a small ICBM ?
Quote from: Jim on 05/24/2009 01:52 pmQuote from: duane on 05/24/2009 02:59 amMy question is how much of a step up in technology or avionics etc would need to go into the rocket system to convert it to a small ICBM ? None. A space launch vehicle is just a ICBM with longer range.Well that kinda sounds frightening! snipDuane
1. Could something like a Falcon be accurate enough with just a dumb reentry vehicle (no manuevering) to hit a county (30X30 miles) ?2. Do modern launch vehicles still use Intertial Navigation Units or do they use GPS systems, or a combination of both ?
Does anyone know the typical g forces astronauts were/are subjected to in the various vehicles during ascent and reentry? Seems like I recall during Project Mercury, the centrifuge trained up to about 10 g's. Soyuz ballistic reentry is probably the highest, but I don't think it's anywhere close to 10.David
8-9 for ballistic Soyuz reentries. This shouldn't really qualify as "typical" since it only happens in the event of a malfunction. ISTR a nominal lifting Soyuz reentry peaks around 4. Apollo lunar reentries were in the 6-7 range.
Launch escape is 15+.
Quote from: hop on 05/25/2009 03:33 am8-9 for ballistic Soyuz reentries. This shouldn't really qualify as "typical" since it only happens in the event of a malfunction. ISTR a nominal lifting Soyuz reentry peaks around 4. Apollo lunar reentries were in the 6-7 range. What's the nominal Shuttle reentry force?
... and ballistic lunar entry.
The "winner" is a ballistic ascent abort entry and ballistic lunar entry.
Apollo attitude during entry was determined by the offset of CG from the axis of symmetry. It could not be changed in flight. The guidance and control were accomplished with roll that moved the direction of lift.
Quote from: StarStuff on 05/25/2009 05:39 pmApollo attitude during entry was determined by the offset of CG from the axis of symmetry. It could not be changed in flight. The guidance and control were accomplished with roll that moved the direction of lift.Is roll rotation around the axis of symmetry? If so, how can it influence lift?
Is roll rotation around the axis of symmetry? If so, how can it influence lift?
Quote from: Danny Dot on 05/25/2009 03:36 pmThe "winner" is a ballistic ascent abort entry and ballistic lunar entry. I read that a normal lunar reentry is mostly ballistic anyway, with only the RCS being used for attitude control. Is this true? And if so, how much difference does the attitude control make?