SpaceX Falcon 9 : Es’hail-2 : Nov 15, 2018 : KSC 39A - DISCUSSION

[soltasto]

Two cataloged objects launched by this mission:

2018-090A   2018-11-15 22:50 UTC - 201/37688km/25.02°
2018-090B   2018-11-15 22:43 UTC - 194/37539km/24.99°

1744 m/s to GSO.

http://www.sworld.com.au/steven/space/gto.zip

Enter initial perigee height (km): 201
Enter initial apogee height (km): 37688
Enter required inclination change (deg): 25.02

theta1 = 25.02 deg, dv1 = 1712.5 m/s
theta2 =  0.00 deg, dv2 =   33.7 m/s
dv = 1746.3 m/s

theta1 = 24.78 deg, dv1 = 1707.8 m/s
theta2 =  0.24 deg, dv2 =   36.1 m/s
dv = 1744.0 m/s

Getting basically the same numbers:

Current Orbit: 201.0000 km x 37688.0000 km x 25.0200 degrees;
Apogee Speed: 1532.5234 m/s; Perigee Speed: 10274.1099 m/s; delta v to this orbit: 0.0000


Super-sync transfer.

First maneuver:
Perigee changed to 35786km
Inclination changed to 0.2427 degrees
Current Orbit: 35786.0000 km x 37688.0000 km x 0.2427 degrees;
Apogee Speed: 2974.4558 m/s; Perigee Speed: 3108.6545 m/s; delta v to this orbit: 1708.3423


Second maneuver:
Apogee changed to 35786km
Inclination changed to 0 degrees
Current Orbit: 35786.0000 km x 35786.0000 km x 0.0000 degrees;
Apogee Speed: 3074.9218 m/s; Perigee Speed: 3074.9218 m/s; delta v to this orbit: 1744.5279


Total delta v to GEO: 1744.5279 m/s

[ZachS09]

Was it normal for the rainbirds to go to full flow that late? (This can be seen in just about every shot shown in this video.)  I know they don't go full flow during the engine startup sequence, but it seems like they ramped up to full flow about one second too late, based on plume impingment.

The rainbirds seems to turn on about the same time as earlier launches. It does appear late at first glance, but they output a LOT of water. That amount of water could damage the rocket, so they wait to go full power until the rocket is clears the rainbird height.

What about the two rainbirds on the north side of the pad? The only times I saw them activate were during the Falcon Heavy Test Flight and Bangabandhu 1. They weren’t used for Es’hail 2.

[russianhalo117]

Was it normal for the rainbirds to go to full flow that late? (This can be seen in just about every shot shown in this video.)  I know they don't go full flow during the engine startup sequence, but it seems like they ramped up to full flow about one second too late, based on plume impingment.

The rainbirds seems to turn on about the same time as earlier launches. It does appear late at first glance, but they output a LOT of water. That amount of water could damage the rocket, so they wait to go full power until the rocket is clears the rainbird height.

What about the two rainbirds on the north side of the pad? The only times I saw them activate were during the Falcon Heavy Test Flight and Bangabandhu 1. They weren’t used for Es’hail 2.

they have valves that shut off flow to them.

[Wolfram66]

Anyone know what the object is by front left landing leg? Some new safing gadget? I do not remember seeing this before. Something to do with octograbber ops?

I thought it was a screen artifact but I could  be wrong.

Thanks guys! I thought that at first, but the artifact looked like it has a shadow and cruciform base.. funny how the brain fills in the blanks when shadows and lines on the deck come together.

[theinternetftw]

This has to be one of, if not the fastest times to go horizontal after arrival!

Best I can tell, it's the second fastest to horizontal, at ~1.96 days after docking.  Beating it is Merah Putih at ~1.69 days. More here.

[tyrred]

This has to be one of, if not the fastest times to go horizontal after arrival!

Best I can tell, it's the second fastest to horizontal, at ~1.96 days after docking.  Beating it is Merah Putih at ~1.69 days. More here.

Docked to horizontal... DTH?  Sweet, a new acronym?

[TripleSeven]

https://twitter.com/brianweeden/status/1067510452207394816

Thanks to the internet I am listening to its beacon via my amateur radio station in Istanbul...we will soon have Phase IV...