Well, 5 days ago. STS-2. NasaSpaceFlight.com has a retrospective:

<URL:https://www.nasaspaceflight.com/2021/11/sts-2-40th-anniversary/>

Turn-around was about 5 months, it seems, but another month was added
for tile repairs after RCS hypergolics were spilled. An abort spoiled
the Nov 4 date, and the Nov 12 date was also in issue due to mux/demux
failure.

Launch was 7 months after the STS-1 launch. The flight lasted 2 days
instead of the planned 5, due to a fuel cell failure. This was also
the first flight where SRB joint o-ring erosion was found.

(For JFM, there's a picture of /Columbia/ descending to Edwards. The
angle is chosen to give the most appropriate airspeed; I'm not sure
what the sink rate for level flight would be if you started trying it
at the speed and elevation pictured.)

/dps

--
"What do you think of my cart, Miss Morland? A neat one, is not it?
Well hung: curricle-hung in fact. Come sit by me and we'll test the
springs."
(Speculative fiction by H.Lacedaemonian.)

On 2021-11-17 20:58, Snidely wrote:

> (For JFM, there's a picture of /Columbia/ descending to Edwards. The
> angle is chosen to give the most appropriate airspeed;

Would it be fair to state that the descent rate wouldn't be that
different, but by gaining speed, shen they do the final flare up, the
wings get the descent rate top drop to near 0 for a smooth landing ?

With low airspeed, they wouldn't be able to droop the descent rate by
much when they flare up, right ?

JF Mezei is guilty of <bBklJ.68377$Wkjc.23879@fx35.iad> as of
11/17/2021 8:25:43 PM
> On 2021-11-17 20:58, Snidely wrote:
>
>> (For JFM, there's a picture of /Columbia/ descending to Edwards. The
>> angle is chosen to give the most appropriate airspeed;
>
>
> Would it be fair to state that the descent rate wouldn't be that
> different, but by gaining speed, shen they do the final flare up, the
> wings get the descent rate top drop to near 0 for a smooth landing ?
>
> With low airspeed, they wouldn't be able to droop the descent rate by
> much when they flare up, right ?

I'm only an armchair pilot. I would be willing to guess that the CDRs
and PLTs have tried this in the simulator, just because, and the crews
on the later flights had very much improved simulators.

I am willing to guess that trying for level flight is not useful in a
Shuttle.

/dps

--
There's nothing inherently wrong with Big Data. What matters, as it
does for Arnold Lund in California or Richard Rothman in Baltimore, are
the questions -- old and new, good and bad -- this newest tool lets us
ask. (R. Lerhman, CSMonitor.com)

"40th anniversary of first US manned craft re-use."

This post has been uncorrected here in more than a month.
No, STS-2 was *NOT* the first reuse of an astronaut-piloted spacecraft.
Not by a longshot.

I hope there are still people who care about accurate facts.
We are very close to one year away from the *60TH* anniversary.

> <URL:https://www.nasaspaceflight.com/2021/11/sts-2-40th-anniversary/>

Even that article makes this same mistake:
"Columbia would have to be turned around for a second mission. No longer would a U.S. crewed spacecraft be used only once."

No. You missed the boat, Chris Gebhardt of NASAspaceflight.com. Missed it by a couple of decades.

~ CT

On Wednesday, November 17, 2021 at 6:58:57 PM UTC-7, snidely wrote:
> Well, 5 days ago. STS-2. NasaSpaceFlight.com has a retrospective:
>
> <URL:https://www.nasaspaceflight.com/2021/11/sts-2-40th-anniversary/>
>
> Turn-around was about 5 months, it seems, but another month was added
> for tile repairs after RCS hypergolics were spilled. An abort spoiled
> the Nov 4 date, and the Nov 12 date was also in issue due to mux/demux
> failure.
>
> Launch was 7 months after the STS-1 launch. The flight lasted 2 days
> instead of the planned 5, due to a fuel cell failure. This was also
> the first flight where SRB joint o-ring erosion was found.
>
>
> (For JFM, there's a picture of /Columbia/ descending to Edwards. The
> angle is chosen to give the most appropriate airspeed; I'm not sure
> what the sink rate for level flight would be if you started trying it
> at the speed and elevation pictured.)
>
> /dps
>
> --
> "What do you think of my cart, Miss Morland? A neat one, is not it?
> Well hung: curricle-hung in fact. Come sit by me and we'll test the
> springs."
> (Speculative fiction by H.Lacedaemonian.)