All pioneered in the mind of Buzz Aldrin..
On 05/30/2020 12:09 PM, ch...@wbmfg.com wrote:
I found it astounding to learn that during the first NASA manned docking
test, the guys would give it some throttle and get farther away from the
target. Nobody had thought it through.
More throttle == faster == higher orbit == slower orbital period.
So you have to slow down to catch up if you want to dock. If you are
behind, you slow down until you get ahead and then speed up to raise up
and slow down...
*From:* Bill Prince
*Sent:* Saturday, May 30, 2020 12:53 PM
*To:* af@af.afmug.com
*Subject:* Re: [AFMUG] OT Doug and Bob's Excellent Adventure - 2nd Try
It's not quite like shooting a bullet. There is a window that they can
maneuver within. It may have to do with the amount of propellant carried
in the "garage" attached to the back of the crew dragon. There also has
to be enough left in that to de-orbit.
I saw a series of diagrams somewhere (maybe on the SpaceX web site?)
that illustrated all the various maneuvers at the different stages.
The approach to the ISS is interesting in that there is an exclusion
zone of sorts all around the ISS. They need to target to outside that
zone until they make their final approach. Once they are in a parallel
orbit just outside the exclusion zone, they can rotate and maneuver into
the docking station. The crew dragon (and the cargo dragon) is that the
whole operation is autonomous.
bp
<part15sbs{at}gmail{dot}com>
On 5/30/2020 11:39 AM, Ken Hohhof wrote:
Guy on radio was saying SpaceX crew capsule has to be launched at a
specific time to rendezvous with the ISS, sounds like shooting a
bullet. Same guy said Boeing design will have a wider launch window
because it is more maneuverable. Looking at photos they don’t seem
that different. Does this sound right? Main difference seems to be
the way they land, in water or on land.
Not sure what happens to Boeing capsule if collapse of air travel on
top of 737 Max fiasco spells the end of Boeing as a company.
*From:* AF mailto:af-boun...@af.afmug.com *On Behalf Of *Bill Prince
*Sent:* Saturday, May 30, 2020 1:25 PM
*To:* af@af.afmug.com
*Subject:* Re: [AFMUG] OT Doug and Bob's Excellent Adventure - 2nd Try
1522 EDT (AKA 3:22 PM)
1422 CDT (AKA 2:22 PM)
1322 MDT (AKA 1:22 PM)
1222 PDT (AKA 12:22 PM)
If you're not on daylight saving time, you know what to do.
bp
<part15sbs{at}gmail{dot}com>
On 5/30/2020 11:18 AM, ch...@wbmfg.com wrote:
Just a reminder in case you forgot.
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