Silavite

Holding for now.

So... like the first stage of the Saturn I and Saturn IB? https://en.wikipedia.org/wiki/Saturn_I#S-I_stage

I've been playing a bit of RP0 lately, and I am having a bit of trouble figuring out how quickly I should make my gravity turns. I especially have trouble with low TWR upper stages, such as ones using an RL10. Does anyone have a heuristic for doing gravity turns that could apply here?

I was reading about Scott Carpenter when I discovered an interesting (and funny!) tidbit. Enjoy!

Mexico City Beach is in shambles... The eyewall has begun to contract, but until it collapses, the storm will not weaken very quickly. It is possible that we will see major hurricane force winds in Georgia and a small swath of Alabama later today.

Not exactly the same thing, but some sounding rockets used balloons to gain extra altitude before lighting their engines. They're dubbed, "Rockoons".

Maezawa is just nodding with everything Musk says and I find that extremely amusing for some reason.

He says 300 bar chamber pressure and 380+ ISP for Raptor!

Sounds familiar...

From one of the article's comments,

My vote is that it's because they already own and have experience with barges. It should be feasible. ULA is planning to recover engines on the Vulcan with a helicopter snatching a parafoil. It's also been done before. https://en.m.wikipedia.org/wiki/Corona_(satellite)

Does this mean that the BFR has graduated from, "Extremely Large Rocket," to, "Overwhelmingly Large Rocket"?

Let me make sure if I've missed anything. The arguments against the SLS are as follows. Behind schedule Severely overbudget Uses dated hardware Shoehorns hardware into roles that they were never designed for EM-2 is unreasonably risky and a double standard for man-rating compared to the Dragon 2 or CST-100 Payload manifest is sparse (Europa Clipper has already been moved to Atlas V) aside from anything specifically supposed to go on the SLS (DSG) May be superseded in ability by the BFR soon after the SLS is in service Arguments for the SLS are as follows. Sunk costs Even if it is a pork project, it keeps NASA relevant The development schedule of the BFR is hardly assured, so the SLS will provide interim capacity The DSG is required for the SLS (even though it doesn't exist yet...) I'm writing a short paper arguing for the cancellation of the SLS for my AP Government class, and I want to make sure I cover everything. Aside from GAO, what would be good places to hunt for reliable sources evaluating the SLS?

The ticking clock, yes. Now that I realize what that sound is supposed to symbolize, it makes a lot more sense. Sounds good!

Ah, I got a bit overexcited. The original tone that hits on beat 1 of every measure fits well for the first 30 seconds in the piece in the exposition and first melody. Once you hit 0:32, I feel like it should start moving in some way as a counter melody or more active harmony. Otherwise, it sounds great. (I would request MOAR CHORDS but that's a personal preference thing.)

Perhaps the Finale to Shostakovich's 5th Symphony starting at 38:11, with T-0 at 40:21? Or the Adagio from Bruckner's 7th Symphony, starting at 16:15 with T-0 at 18:16? Or the Finale from Mahler's 1st Symphony, with T-0 at 2:10? There's just too much epic music to pick from!

Propeller efficiency for a variable pitch prop can be approximated as about 80% out to around Mach 0.8, where things start getting funny with wave drag. I searched around a bit and found this with google. The theory is beyond my realm of understanding, but it features the propeller efficiency (η) of a Cessna 172's prop plotted against its advance ratio (J). Even if you were to model your prop based on this, you'd still need to find static thrust, which I have no idea how to calculate.

Admittedly it's a bumper sticker, not a license plate, but... WE BRAKE FOR NOBODY

RL60 Should have been the RL10's successor, but the engine never got a lease on life for reasons beyond me.

I derped, the NOAA's Hurricane Center official forecast has Irma moving along Florida's East Coast, not far to the South. Some other models seem to agree with this track (GFS Model and ECMWF Model). Hopefully it stays off the coast. We won't have a solid of idea where it will hit (if at all) yet... right now it's a wait-and-see.

Irma, as of now, is forecast to slowly weaken before it reaches Florida. http://www.nhc.noaa.gov/text/refresh/MIATCDAT1+shtml/061448.shtml? Also, Irma is forecast to stay well south of Cape Canaveral. Though, as with any forecast, it is subject to change.

Perhaps you should drop by south east Texas, then. The facility in Brownsville better be built hurricane proof. (Yes, I know Harvey is only a tropical storm right now, and yes, I know it's supposed to hit North of Brownsville, but just sayin'.) Anywho, the launch window ends one minute before I get out of school. Curses, foiled again...

Lucky me, band practice is in the evening today. Hoping to see this thing go! T-3 minutes now. EDIT Well that was a well timed post...

Surprised no one has posted these yet. http://www.findplanetnine.com/2017/06/status-update-part-1.html http://www.findplanetnine.com/2017/07/status-update-part-2.html

Dang, thought it was rear loaded... oh well, shows what I know.