×

Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

cancel ×
This is a preview of your comment

No Comment Title Entered

Anonymous Coward 1 minute ago

No Comment Entered

18 comments

Great idea (3, Insightful)

uncoveror (570620) | more than 11 years ago | (#5311603)

So, they are retiring the Ariane-4, which has always worked, and going to the Ariane-5, which is unreliable. Maybe they should just follow NASA's lead and build a giant catapult [uncoveror.com] to launch satellites into space.

Re:Great idea (3, Insightful)

PD (9577) | more than 11 years ago | (#5311940)

Not as bad as the Titan IV. Very expensive, liked to blow up, and they retired it after a ridiculously small number of launches.

It's replaced with that new Delta that can lift the heavy payloads. And Deltas are much nicer.

Re:Great idea (2, Informative)

Lars T. (470328) | more than 11 years ago | (#5313239)

Unreliable? Hardly [astronautix.com]. Unless you include the failed first launch of the Ariane 5 EC-A enhanced version, there was 1 failure in 13 launches, the failure being due to the infamous soft-/hardware integration error [ucl.ac.uk], which has been fixed.

Re:Great idea (1)

sean23007 (143364) | more than 11 years ago | (#5314548)

1 failure in 13 is not very reliable. Over 100 successful launches is reliable.

Re:Great idea (1)

Lars T. (470328) | more than 11 years ago | (#5314734)

So make it 0 out of twelve after a bug has been fixed. Is that reliable enough?

Re:Great idea (1)

sean23007 (143364) | more than 11 years ago | (#5316523)

I didn't count the failure of the new heavy lift rocket. That was the second failure in 14 launches of the Ariane 5 rocket. No matter which way you look at it, that is much worse than 116 safe launches.

Re:Great idea (1)

Detritus (11846) | more than 11 years ago | (#5315074)

The Ariane did not start out with a wonderful reliability record. I remember once joking that Ariane customers could save millions of dollars by hiring a barge and dumping their satellites into the ocean by themselves. It took a while to get the bugs out of the system. This is normal for any new launch vehicle.

Onwards and upwards (4, Insightful)

pstemari (579210) | more than 11 years ago | (#5311690)

Figures on the website indicate that the Ariane-5 will roughly double the payload to geosynch orbit. A rather nice feat for a program with a good history of success. Reliability should improve with more launches.

Am I the only one who think it looks like a Titan-III knockoff, though?

Re:Onwards and upwards (1)

Jon Chatow (25684) | more than 11 years ago | (#5313589)

You know, there's a limit to the extent that rockets capable of taking reasonably large masses into orbit can differ without being sub-optimal ;-). But I do see what you mean...

Re:Onwards and upwards (1)

Jon Chatow (25684) | more than 11 years ago | (#5313645)

For reference: the Titan III that took Mars 1 into space [nasda.go.jp] vs. the BBC's picture of the Arianne 4 [bbc.co.uk]. I think the Arianne 4 has 4 SRBs, not 2, though.

Re:Onwards and upwards (1)

pstemari (579210) | more than 11 years ago | (#5314302)

No, I meant the Ariane 5 [arianespace.com] looked like a Titan III knockoff.

Depending on the exact configuration, the Ariane 4 can have up to four solid-fuel strap-ons. The AR40 has none, the AR42P has two solid-fuel strap-ons, and the AR44P has four. It can also use liquid fuel strap-ons, alone or in conjunction with solid fuel strap-ons, giving the AR42L (two liquid), AR44LP (two of each), and AR44L (four liquid). It's really an amazing amount of flexibility.

Is it true . . . (-1, Troll)

Anonymous Coward | more than 11 years ago | (#5311923)

That instead of dogs and chimps the French use cheese-eating surrender monkeys ? That the Ariane's budget has been cut because the French discovered there are no truffles on the moon ? That the French space program is spending 12 million euro to reverse engineer the purpose of the Space Station's weightless shower ? That the French manned missions will take along an Algerian and a Romanian Gypsy so the Franconauts can have someone spit on and feel at home ?

Re:Is it true . . . (0)

Anonymous Coward | more than 11 years ago | (#5314142)

Hehe... "surrender monkeys". I like that.

Especially since they have done it again. This time they already surrendered even before the war with Iraq began.

Name dropping! (0, Offtopic)

Jellybob (597204) | more than 11 years ago | (#5312410)

Slightly OT here, but I know one of the people who designed Intelsat's propulsion systems. /me says goodbye to his karma.

Re:Name dropping! (1)

jericho4.0 (565125) | more than 11 years ago | (#5312746)

Wow!

Re:Name dropping! (1)

Jellybob (597204) | more than 11 years ago | (#5312939)

I resent that sarcastic comment, and will be sending my lawyers round to VA in the morning, to demand that the comment is immediatly removed from /. and all it's mirrors.

I will not tolerate this slander!

Oh yeah? (0)

Anonymous Coward | more than 11 years ago | (#5315199)

My girlfriend's cousin went to school with Dark Angel's Jessica Alba. Apparently she was not very nice and obsessed with her appearence.

Fuck this shit (0)

Anonymous Coward | more than 11 years ago | (#5314136)

It's sunday and I'm at work.

I had to work yesterday too.

All work and no play makes Jack a dull boy.

Check for New Comments
Slashdot Account

Need an Account?

Forgot your password?

Don't worry, we never post anything without your permission.

Submission Text Formatting Tips

We support a small subset of HTML, namely these tags:

  • b
  • i
  • p
  • br
  • a
  • ol
  • ul
  • li
  • dl
  • dt
  • dd
  • em
  • strong
  • tt
  • blockquote
  • div
  • quote
  • ecode

"ecode" can be used for code snippets, for example:

<ecode>    while(1) { do_something(); } </ecode>
Sign up for Slashdot Newsletters
Create a Slashdot Account

Loading...