Optional!

http://www.youtube.c...h?v=3Mh3G5SS66s

-drl

# Range safety officer?

Started by
deSitter
, Nov 16 2013 09:18 PM

5 replies to this topic

### #1

Posted 16 November 2013 - 09:18 PM

### #2

Posted 16 November 2013 - 09:56 PM

Hey, it was coming down anyway...

### #3

Posted 16 November 2013 - 11:38 PM

### #4

Posted 17 November 2013 - 01:39 AM

Well I got really curious about how far away this pretty Russian girl is from the rocket. Here's how we can guess. We can make these assumptions because the area of Baikonur Cosmodrome is table-top flat.

1) She must be standing on the roof of a building nearby. We know this because the horizon line intersects the Soyuz rocket about 1/3rd of the way up, let's say 50 feet. (The Soyuz rocket is about 150 feet tall.) The only likely such building is the hotel complex.

2) Let's assume she's a typical human female. The space from her cross pendant to the bridge of her nose is, let's say, 1 foot. This 1 foot subtends the same angle as the upper 100 feet of the rocket. So by similarity, the distance from the rocket to the camera is 100 times the distance of the girl to the camera.

3) The camera cannot be THAT far from the girl - we have to make an educated guess - the depth of field is such that we can assume no more than 50 feet. Both camera and girl are on a roof top. It's probably a functional, not decorative, hotel that is long and skinny with rooms off a hallway. 50 feet seems reasonable.

4) AHA! The sound from the engines lighting comes about 3 seconds later - that's 3000 feet! So the camera is 30 feet from her, and the rocket less than a mile!

Crikey!

-drl

1) She must be standing on the roof of a building nearby. We know this because the horizon line intersects the Soyuz rocket about 1/3rd of the way up, let's say 50 feet. (The Soyuz rocket is about 150 feet tall.) The only likely such building is the hotel complex.

2) Let's assume she's a typical human female. The space from her cross pendant to the bridge of her nose is, let's say, 1 foot. This 1 foot subtends the same angle as the upper 100 feet of the rocket. So by similarity, the distance from the rocket to the camera is 100 times the distance of the girl to the camera.

3) The camera cannot be THAT far from the girl - we have to make an educated guess - the depth of field is such that we can assume no more than 50 feet. Both camera and girl are on a roof top. It's probably a functional, not decorative, hotel that is long and skinny with rooms off a hallway. 50 feet seems reasonable.

4) AHA! The sound from the engines lighting comes about 3 seconds later - that's 3000 feet! So the camera is 30 feet from her, and the rocket less than a mile!

Crikey!

-drl

### #5

Posted 17 November 2013 - 09:06 AM

Here is hoping it had the latest Russian spy technology as a payload

### #6

Posted 17 November 2013 - 09:00 PM

The comments said 3 GLONASS (Russian GPS) satellites, but I can't vouch for that.Here is hoping it had the latest Russian spy technology as a payload