Science Links
Space Links
-
Posted Lately
Tags
ares Armadillo ATV Augustine Canard china Climate co2 coal Conceptual Design Depot EELV Energy ESA ESAS Espoo Estonia Finland global warming Helsinki Homebuilt hybrid hypersonic ISS Langley lftr lunar lander challenge Lynx Masten NASA nuclear orion python RLV rocket sats skylon SpaceX Suborbital Sukhoi Thorium ULA VSE VTVL XCOR
Category Archives: industry
Why Do Bike Lights Have Batteries
They could very easily be pedal powered, requiring no charging or battery changes ever. Old dynamos resisted pedaling because of the old lamp technology, and the lamps also burned out often. No more. This seems to be a nice diagram, … Continue reading
Posted in Homebuilt, industry, Transportation, Uncategorized
Leave a comment
Hero Designers and Testing
This shows the “golden age” during and just after the war. Even large things with a lot of design input could not be designed to be close to optimal right from the start. The B-36 experienced failures in structural testing … Continue reading
Posted in Homebuilt, industry, RLV:s
Tagged B-36, Buckling, Design, Homebuilt, Ian Lea, Panel Size, Rib, Ribs, Structural Testing
Leave a comment
Get the benefit while everyone pays the cost
Dr. Rabett has translated Ottmar Edenhofer’s Süddeutscher Zeitung interview from German. Excerpt: OE: Take coal for example. Worldwide there are about 12, 000 gigatons of coal in the ground. If we want to meet the goal of not warming by … Continue reading
Posted in Climate, Global, idiocracy, industry, Science Links
Tagged Climate, coal, Externalities, Ottmar Edenhofer
1 Comment
Camera Systems
Back when digital cameras started appearing around the turn of the millennium, it pretty quickly turned out that just making a digital version of an 35 mm SLR camera was not a very efficient move. The image quality with full … Continue reading
Posted in Design, industry, Motivation, Uncategorized
Tagged four thirds, gf, micro four thirds, nex, olympus, panasonic, pen, sony
Leave a comment
Why precool but not liquify – Skylon and SABRE
Well, I thought maybe I could add some content. Everybody’s heard about the British Hotol follower Skylon and its airbreathing SABRE engines. What’s special about them? My understandin’s based on this excellent document from Reaction Engines explaining why the system … Continue reading
Posted in airplane, Architecture, Design, Energy, engines, ESA, industry, Launchers, RLV:s, Suborbital, Transportation, Uncategorized
Tagged Airbreathing, Heat Exchanger, Hotol, Hydrogen, LACE, Precooler, RB545, sabre, skylon
6 Comments
Can I have Linux with that?
Apple’s Iphone, the various Google Android phones by Samsung, HTC and probably others, and Nokia’s Symbian phones are fighting on the smart phone market. As far as I know, Iphone is “closed” and you can only download those apps that … Continue reading
Parawings and Rogallo wings, again
Inspired by Michel Van (not Scott Lowther as mentioned earlier) at Secret Projects, who ran into the Gemini inflatable Rogallo wing test videos that are now available (not embeddable so linked only). There are parafoil systems for airdropping stuff, though … Continue reading
Posted in Architecture, Design, industry, RLV:s, Spacecraft, Suborbital
2 Comments
Gravity Assist Competition
Or The Space Game, by ESA. This is a nice javascript webpage where a probe is shot from Earth to Jupiter with gravity assists at Venus (twice), Earth and Mars. You try to achieve the lowest propulsive delta vee. You … Continue reading
Posted in Architecture, Astronomy, Depot, Design, Energy, ESA, Homebuilt, industry, Launchers, Lunar, Models, Motivation, Science Links, Spacecraft
Tagged Delta vee, ESA, Gravity assist, Hohmann, Space Game, Thespacegame, Trajectory
Leave a comment
The Turn-Boost-Glide-Back approach for first stages
In a patent by the famous Barnaby Wainfan. EDIT: corrected the link. This patent was filed in 2006 and granted in 2008.
Posted in airplane, Architecture, Art, Design, engines, industry, Launchers, RLV:s, Suborbital
Tagged Boostback, Glideback, Re-entry, Turnback, Wainfan
4 Comments