What size is ISS now?

christine16 · Jun 12, 2007

earth_bound_misfit · Jun 12, 2007

I heard on NasaTV that the new solar panels are over 240 feet in length (combined). <div class="Discussion_UserSignature"> ----------------------------------------------------------------- Wanna see this site looking like the old SDC uplink?Go here to see how: SDC Eye saver </div>

christine16 · Jun 12, 2007

can you post link?

strandedonearth · Jun 12, 2007

From this link About the Space Station (as of Dec. 2006): Weight 471,444 pounds Habitable Volume 15,000 cubic feet Dimensions Span of Solar Arrays: 240 feet Length: 146 feet from Destiny Lab to Zvezda; 171 feet with a Progress docked Truss 191 feet Height: 90 feet Note that it's as of Dec. '06. Add on the stats of the new piece: The S3/S4, which is 45 feet long and weighs 35,678 pounds, was attached... and you get a truss 236 feet long, and a total mass of 507,122 pounds.

silylene old · Jun 13, 2007

total mass of 507,122 pounds Sorry to be pedantic. Pounds is a measure of weight, not mass. 230,026 Kg is the correct mass of the ISS. If you want to use English units, the unit of mass is a "slug". The ISS masses 15,762 slugs. <div class="Discussion_UserSignature"> <div class="Discussion_UserSignature" align="center">- - - - - - - - - - - - - - - - - - - - - - </div><div class="Discussion_UserSignature" align="center">I really, really, really miss the "first unread post" function. </div> </div>

strandedonearth · Jun 13, 2007

Oops! I knew that, too. If the website was metric I wouldn't have goofed like that. That's almost as bad as asking SG how much fuel (instead of propellant) the Shuttle burns <img src="/images/icons/laugh.gif" />

dreada5 · Jun 13, 2007

Useful graphic from SDC:

MeteorWayne · Jun 13, 2007

Hey you go right on being pedantic. I love stuff like that. I can't wait to tell my friend Ken his mass is 5 3/4 slugs <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

MeteorWayne · Jun 13, 2007

Everybody needs a pet <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

alturas · Jun 18, 2007

When will the P6 truss be moved to its final position? Will it be before S6 or without a shuttle present?

christine16 · Jun 19, 2007

isnt it moved already

ckikilwai · Jun 19, 2007

The movement of the P6 truss will happen on STS-120 planned for October 2007, after the S5 truss is delivered on STS-118 in August. http://en.wikipedia.org/wiki/STS-120 edit: got it P6 and S6 confused :S , corrected my post

JonClarke · Jun 19, 2007

According to Wilkipedia the pound is a unit of mass, defined as being 0.454545r of a kg. A slug is a mass that accelerates by 1 ft/s2 when a force of one pound-force is applied to it. A slug has a mass of about 32.17405 pounds. Jon <div class="Discussion_UserSignature"> Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars Arthur Clarke </div>

CalliArcale · Jun 19, 2007

<blockquote>In reply to:<hr />isnt it moved already <hr /></blockquote> No. The solar array blankets on the P6 truss have now been fully retracted (allowing clearance for the newly delivered S3/S4 to track the Sun), but the truss itself is still attached to the top of the Z1 truss segment. It will be moved to the end of the port-side truss and attached to the P5, which was delivered last December. P6 will be relocated during the STS-120 mission, which will also deliver the second node, "Harmony". In the meantime, the S5 segment will be delivered. Wow, reading up on that, STS-120 looks like it will be *busy*! <div class="Discussion_UserSignature"> "People assume that time is a strict progression of cause to effect, but actually from a non-linear, non-subjective viewpoint it's more like a big ball of wibbly wobbly . . . timey wimey . . . stuff." -- The Tenth Doctor, "Blink" </div>

thereiwas · Jun 19, 2007

Another mistake in wikipedia then. The slug is the English unit of mass. The pound is a unit of force. It is true that a mass of .4545 kilograms, in a 1.0 G gravity field, does exert a force of 1 pound downward, that does not mean that a pound is a unit of mass.

ckikilwai · Jun 19, 2007

Do the Russian still have plans to expand the ISS? I looked around at the internet but I only found old data...

drwayne · Jun 19, 2007

For a while, there was an attempt to convert to using pounds-force and pounds-mass... Wayne <div class="Discussion_UserSignature"> "1) Give no quarter; 2) Take no prisoners; 3) Sink everything." Admiral Jackie Fisher </div>

MeteorWayne · Jun 19, 2007

I guess the pounded each other and slugged it out to a draw <img src="/images/icons/wink.gif" /> <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

silylene old · Jun 19, 2007

Another mistake in wikipedia then. The slug is the English unit of mass. The pound is a unit of force. It is true that a mass of .4545 kilograms, in a 1.0 G gravity field, does exert a force of 1 pound downward, that does not mean that a pound is a unit of mass. That is correct. A pound is a unit of force, not mass. The Wikipedia article cited by Jon is not that clear on the rather confusing terminology. Sometimes a "pound" is confused with the more correct unit the "pound mass" "a pound mass is the amount of mass that 1 lb of force will accelerate at 32 feet/s2". There are quite a few google citations on the "pound-mass". The hyphen is often, but not always included in this unit terminology to avoid confusion. Here is a good discussion of this sometimes confusing terminology <blockquote>In reply to:<hr />The British Gravitational System - BG The British Gravitational System of units is used by engineers in the English-speaking world with the same relation to the foot - pound - second system as the meter kilogram - force second system (SI) has to the meter - kilogram - second system. For engineers who deals with forces, instead of masses, it's convenient to use a system that has as its base units length, time, and force, instead of length, time and mass. The three base units are the foot, the second, and the pound-force. In the BG system the mass unit is the slug and is defined from the Newton's Second Law (1). The unit of mass, the slug, is derived from the pound-force by defining it as the mass that will accelerate at 1 foot per second per second when a 1 pound-force acts upon it: 1 lb = (1 slug)(1 ft/s2) In other words, 1 lb force acting on 1 slug mass will give the mass an acceleratio</blockquote> <div class="Discussion_UserSignature"> <div class="Discussion_UserSignature" align="center">- - - - - - - - - - - - - - - - - - - - - - </div><div class="Discussion_UserSignature" align="center">I really, really, really miss the "first unread post" function. </div> </div>

JonClarke · Jun 19, 2007

What is your evidence that the pound is only a unit of force and not mass? Metrology sites I checked in Australia, the UK and elsewhere say otherwise. Jon <div class="Discussion_UserSignature"> Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars Arthur Clarke </div>

JonClarke · Jun 19, 2007

Non SI measurements of density are given in pounds per cubic foot (or inch). Rather odd if the pound is not a unit of mass. The fact remains that both the pound is a unit of mass. Jon <div class="Discussion_UserSignature"> Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars Arthur Clarke </div>

bobw · Jun 19, 2007

I ran into a problem trying to convert Newton meters of torque into pound feet of torque and the SDC crew straightened me out in this thread . I think slugs are the real deal for mass because it is the only way to cancel out the sec^2 in Newtons when converting to pound feet. <div class="Discussion_UserSignature"> </div>

silylene old · Jun 19, 2007

Jon, I know people say that, and just because it is a colloquial term does not make it technically correct. In English untis, the correct words for mass are either "slugs" or "pound-mass". <div class="Discussion_UserSignature"> <div class="Discussion_UserSignature" align="center">- - - - - - - - - - - - - - - - - - - - - - </div><div class="Discussion_UserSignature" align="center">I really, really, really miss the "first unread post" function. </div> </div>

drwayne · Jun 19, 2007

And people wonder why I stay in MKS whenever possible. <img src="/images/icons/wink.gif" /> I have seen Physics texts use pounds in confusing ways from time to time. Long ago, a Physics professor of mine made us write out lpf or lbm to indicate what we meant. Wayne <div class="Discussion_UserSignature"> "1) Give no quarter; 2) Take no prisoners; 3) Sink everything." Admiral Jackie Fisher </div>

brellis · Jun 19, 2007

I'm 43y.o., citizen of the USA When I was 5, my teacher told me we were converting to metric. It's still an exercise for me. Wahappin? Do kids today get better exposure to metric? Apparently not. Why? Oh, and how many square yards is ISS? <img src="/images/icons/tongue.gif" /> hehee <div class="Discussion_UserSignature"> I'm a recovering optimist - things could be better. </div>

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