« Ap Bu Nho - A Remembrance for Veteran's Day | Main | Pope Francis may be removed from office »

12 November 2019

Comments

Feed You can follow this conversation by subscribing to the comment feed for this post.

Sbin

SpaceX has made many impressive accomplishments in a relatively short period of time.
Will be nice to have some real competition to terrestrial service providers!

Factotum

Matter is neither created nor destroyed. It goes somewhere. Where? Or has heavily-subsidized Elon Musk also over turned the laws of thermodynamics.

Factotum

BTW out west, Musk is salivating over our recent power shut-offs. Gleefully encouraging investments in his Tesla Power Walls - which can barely keep a light bulb on so you need at least two of them at the installation price of over $15,000 each.

Better to take a world cruise for a few months while the power is off and eat all the ice cream in your freezer in one sitting.

PavewayIV

Didn't know what to make of the astronomers' concerns, but found this video [NYT link] captioned "A constellation of Starlink satellites seen in the night sky over the Netherlands, nearly 24 hours after being launched by SpaceX in May. Credit...By Marco Langbroek Via Reuters" Part of a NYT article on the impact to astronomy [link] but comes with a half-page nag screen about registration and logging in.

Even after repositioning to their permanent higher altitudes and dispersing, the satellites will still be visible and brighter than most stars well after dusk or before dawn. It's the solar panels. SpaceX painted some parts of the earth-facing antenna side black, but they are limited on how much anti-reflective coating they can use on the solar panels while avoiding overheating issues.

This is not a rant for or against Starlink - SpaceX is aware of and working on the problem. The astronomers are right to be concerned about it today, though. It would be a little late to do much once 45,000 of these satellites are in orbit.

casey

Tech-heavy (and starry-eyed for Musk/tech-Utopia) breakdown of Starlink/Starship business plan, using FCC filings:
https://caseyhandmer.wordpress.com/2019/11/02/starlink-is-a-very-big-deal/

"Gwynne Shotwell was recently quoted as saying that Starlink is 17x cheaper or faster than OneWeb, which would imply a comparative cost of $0.10/GB... It turns out that SpaceX has an insurmountable advantage over the competition: they can launch a more capable satellite, today, for 15 times less per unit."

EconomicsExpert

Factotum, actually, no, https://en.wikipedia.org/wiki/Tesla_Powerwall#Powerwall_specifications --each Powerwall now costs about $5,500 to $5,900 & has 13.5 kiloWattHours of power

-ie, it's 13,500 watt hours of power is enough power the common, standard 10-13 watt CFL/LED lightbulb (equal in brightness to old 60 to 100 watt incandescent lightbulbs) for about
1,350 hours
or
TEN of those light bulbs for 135 hours (for about 6 DAYS continuous)

Each PowerWall battery has a peak simultanenous output of 7,000 watts peak or 5,000 watts continuous,
meaning it can ALSO power your 3,000 watt air conditioner, 1500 watt heaterpool pump, & all electrical appliances also (55 watt HDTV, etc)

It is recommended 1 Powerwall battery per about 1,000 square feet of home to power a home for about a 1 week
so
it's two Powerwall batteries for a 2,200 square foot home

There is an additional cost of about $1,000 header/inverter (only need 1 inverter per installion)

Standard Labor/installation cost is either free do-it-yourself or $800 to $2,000 depending on the contractor you hire as it is for all home contracting jobs, costs can vary greatly depending on the contractor

Sbin

Add an appropriate size natural gag powered generator and you have a nice backup power system.

turcopolier

Sbin

I have a 20 KW gas fed Generac generator. Works splendidly.

Sbin

Excellent size for home backup.
The ability to run pumps and blowers for heating systems run freezers and refrigerator maintain communication and lighting.
We apso have a wood burning insert but that is as much for pleasure as need

ambrit

Sir;
I wonder about usable life span of these satellites. With 'modern' technology advancing so quickly, when will these satellite units become obsolescent? I'll surmise that Space-X has figured the cost to benefit figures out to be profitable for the company, but that makes me wonder what the return on investment is? The business side of this endeavour is mayhaps more important to Space-X, the company, not necessarily Musk the 'projector,' than the science aspect of it.
That said, at least Space-X is considering the end of life issues involved with any low Earth orbit satellite.
I am still seeing a business opportunity presented by the eventual need to "police" the near Earth space "junk" population. It can be done robotically. There is where Space-X can literally "reap" a fortune. DARPA would be all onboard.
Whenever I begin to despair for mankind, along comes some "visionary" to make a new stride into "the unknown." There is hope for us all.

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Working...
Your comment could not be posted. Error type:
Your comment has been saved. Comments are moderated and will not appear until approved by the author. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.

Working...

Post a comment

Comments are moderated, and will not appear until the author has approved them.

Your Information

(Name and email address are required. Email address will not be displayed with the comment.)

My Photo

October 2020

Sun Mon Tue Wed Thu Fri Sat
        1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31
Blog powered by Typepad