Blarghagh Posted June 18, 2018 Share Posted June 18, 2018 The Large Hadron Collider Is Getting an Upgrade. Remember when people thought it would end the world? lel. Progress marches on. 9 Link to comment Share on other sites More sharing options...
rjshae Posted June 18, 2018 Share Posted June 18, 2018 'Surgery in a pill' a potential treatment for diabetes "It has just been discovered that research causes cancer in rats." Link to comment Share on other sites More sharing options...
Gfted1 Posted June 21, 2018 Share Posted June 21, 2018 Einstein Was Right! Scientists Confirm General Relativity Works With Distant Galaxy. 1 "I'm your biggest fan, Ill follow you until you love me, Papa" Link to comment Share on other sites More sharing options...
rjshae Posted July 5, 2018 Share Posted July 5, 2018 http://www.businessinsider.com/brain-stimulation-could-zap-out-violent-and-criminal-thoughts-2018-7 Ya know, if you simultaneously zap them in the groin area, you'd get even better results. "It has just been discovered that research causes cancer in rats." Link to comment Share on other sites More sharing options...
Gfted1 Posted July 13, 2018 Share Posted July 13, 2018 New South African Telescope Releases Epic Image of the Galactic Center. 4 "I'm your biggest fan, Ill follow you until you love me, Papa" Link to comment Share on other sites More sharing options...
Guard Dog Posted July 16, 2018 Share Posted July 16, 2018 (edited) Article on feasibility of different orbital launch systems. https://www.realclearscience.com/blog/2018/07/14/will_we_ever_stop_using_rockets_to_get_to_space.html I've always wondered why lighter-that-air lift systems haven't gotten more thought in designing orbital launch systems? The USAF (then) and the DHS (now) run a program called TARS (Tethered Aerostat Radar System) that uses semi rigid aerostats to lift a 20k kg payload. The max the Falcon 9 can lift is 54k kg. take away the fuel requirements to generate sufficient lift from sea level and it should be in the ballpark. Just a thought. Edit: The TARS payload is actually 1k kg. The aerostats have a max theoretical lift of 5k kg. Multiple aerostats can be used. Again, theoretically. TARS does not need to do it but it can be done. Edited July 16, 2018 by Guard Dog 2 "While it is true you learn with age, the down side is what you often learn is what a damn fool you were before" Thomas Sowell Link to comment Share on other sites More sharing options...
pmp10 Posted July 16, 2018 Share Posted July 16, 2018 I've always wondered why lighter-that-air lift systems haven't gotten more thought in designing orbital launch systems? The USAF (then) and the DHS (now) run a program called TARS (Tethered Aerostat Radar System) that uses semi rigid aerostats to lift a 20k kg payload. The max the Falcon 9 can lift is 54k kg. take away the fuel requirements to generate sufficient lift from sea level and it should be in the ballpark. Just a thought. Edit: The TARS payload is actually 1k kg. The aerostats have a max theoretical lift of 5k kg. Multiple aerostats can be used. Again, theoretically. TARS does not need to do it but it can be done. Reaching space is far more about total speed then starting height. While there are some airborne launch systems it's just rarely worth the effort. Link to comment Share on other sites More sharing options...
Chilloutman Posted July 16, 2018 Share Posted July 16, 2018 (edited) Article on feasibility of different orbital launch systems. https://www.realclearscience.com/blog/2018/07/14/will_we_ever_stop_using_rockets_to_get_to_space.html I've always wondered why lighter-that-air lift systems haven't gotten more thought in designing orbital launch systems? The USAF (then) and the DHS (now) run a program called TARS (Tethered Aerostat Radar System) that uses semi rigid aerostats to lift a 20k kg payload. The max the Falcon 9 can lift is 54k kg. take away the fuel requirements to generate sufficient lift from sea level and it should be in the ballpark. Just a thought. Edit: The TARS payload is actually 1k kg. The aerostats have a max theoretical lift of 5k kg. Multiple aerostats can be used. Again, theoretically. TARS does not need to do it but it can be done. Edited July 16, 2018 by Chilloutman I'm the enemy, 'cause I like to think, I like to read. I'm into freedom of speech, and freedom of choice. I'm the kinda guy that likes to sit in a greasy spoon and wonder, "Gee, should I have the T-bone steak or the jumbo rack of barbecue ribs with the side-order of gravy fries?" I want high cholesterol! I wanna eat bacon, and butter, and buckets of cheese, okay?! I wanna smoke a Cuban cigar the size of Cincinnati in the non-smoking section! I wanna run naked through the street, with green Jell-O all over my body, reading Playboy magazine. Why? Because I suddenly may feel the need to, okay, pal? I've SEEN the future. Do you know what it is? It's a 47-year-old virgin sitting around in his beige pajamas, drinking a banana-broccoli shake, singing "I'm an Oscar Meyer Wiene" Link to comment Share on other sites More sharing options...
Guard Dog Posted July 16, 2018 Share Posted July 16, 2018 I've always wondered why lighter-that-air lift systems haven't gotten more thought in designing orbital launch systems? The USAF (then) and the DHS (now) run a program called TARS (Tethered Aerostat Radar System) that uses semi rigid aerostats to lift a 20k kg payload. The max the Falcon 9 can lift is 54k kg. take away the fuel requirements to generate sufficient lift from sea level and it should be in the ballpark. Just a thought. Edit: The TARS payload is actually 1k kg. The aerostats have a max theoretical lift of 5k kg. Multiple aerostats can be used. Again, theoretically. TARS does not need to do it but it can be done. Reaching space is far more about total speed then starting height.While there are some airborne launch systems it's just rarely worth the effort. Actually you are incorrect. Escape velocity is inversely proportional to the r (distance from center of mass). Get farther away from the center of mass and you need less V. You also need less energy to overcome air resistance if you begin thrust higher in the atmosphere. Less V means less fuel. So the idea would be to use lighter than air lift to elevate and orbital vehicle to an optimum altitude and then begin thrusting from there. The math just may not work. Otherwise I'm sure this would have been tried. But, in theory... "While it is true you learn with age, the down side is what you often learn is what a damn fool you were before" Thomas Sowell Link to comment Share on other sites More sharing options...
pmp10 Posted July 16, 2018 Share Posted July 16, 2018 I've always wondered why lighter-that-air lift systems haven't gotten more thought in designing orbital launch systems? The USAF (then) and the DHS (now) run a program called TARS (Tethered Aerostat Radar System) that uses semi rigid aerostats to lift a 20k kg payload. The max the Falcon 9 can lift is 54k kg. take away the fuel requirements to generate sufficient lift from sea level and it should be in the ballpark. Just a thought. Edit: The TARS payload is actually 1k kg. The aerostats have a max theoretical lift of 5k kg. Multiple aerostats can be used. Again, theoretically. TARS does not need to do it but it can be done. Reaching space is far more about total speed then starting height.While there are some airborne launch systems it's just rarely worth the effort. Actually you are incorrect. Escape velocity is inversely proportional to the r (distance from center of mass). Get farther away from the center of mass and you need less V. You also need less energy to overcome air resistance if you begin thrust higher in the atmosphere. Less V means less fuel. So the idea would be to use lighter than air lift to elevate and orbital vehicle to an optimum altitude and then begin thrusting from there. The math just may not work. Otherwise I'm sure this would have been tried. But, in theory... But air launches have been done with Pegasus. And balloon launches are being developed. But it's clearly for minor payloads, they can't scale the same way that rockets can. Link to comment Share on other sites More sharing options...
rjshae Posted July 19, 2018 Share Posted July 19, 2018 (edited) https://www.eso.org/public/unitedkingdom/news/eso1824/?lang Impressive. Most impressive. Adaptive optics has come a long way. Edited July 19, 2018 by rjshae 3 "It has just been discovered that research causes cancer in rats." Link to comment Share on other sites More sharing options...
Gfted1 Posted July 25, 2018 Share Posted July 25, 2018 Radar observations have revealed what appears to be a buried lake on Mars. 2 "I'm your biggest fan, Ill follow you until you love me, Papa" Link to comment Share on other sites More sharing options...
Gfted1 Posted July 29, 2018 Share Posted July 29, 2018 NASA's New Planet Hunter Begins Its Search for Alien Worlds. 3 "I'm your biggest fan, Ill follow you until you love me, Papa" Link to comment Share on other sites More sharing options...
rjshae Posted August 7, 2018 Share Posted August 7, 2018 Engineers teach a drone to herd birds away from airports autonomously Next goal: herding cats. 1 "It has just been discovered that research causes cancer in rats." Link to comment Share on other sites More sharing options...
Guard Dog Posted August 14, 2018 Share Posted August 14, 2018 Interesting study on the correlation of sleep deprivation and loneliness. https://www.telegraph.co.uk/science/2018/08/14/sleep-deprivation-fuels-loneliness-tired-people-socially-repellent/ I've always thought of this a s a chicken and egg argument. Are you lonely because you are tired or are not sleeping because you are lonely? For my part after two failed marriages whenever I feel lonely brooding over past wrongs usually alleviates it. "While it is true you learn with age, the down side is what you often learn is what a damn fool you were before" Thomas Sowell Link to comment Share on other sites More sharing options...
BruceVC Posted August 15, 2018 Share Posted August 15, 2018 (edited) https://www.reuters.com/article/us-gsk-hiv/long-acting-injection-boosts-hopes-for-gsks-hiv-business-idUSKBN1L00L2 Guys this is a great development, Glaxo has tested a new HIV treatment where you only need two injections a month as opposed to taking pills every day !!! Edited August 15, 2018 by BruceVC "Abashed the devil stood and felt how awful goodness is and saw Virtue in her shape how lovely: and pined his loss” John Milton "We don't stop playing because we grow old; we grow old because we stop playing.” - George Bernard Shaw "What counts in life is not the mere fact that we have lived. It is what difference we have made to the lives of others that will determine the significance of the life we lead" - Nelson Mandela Link to comment Share on other sites More sharing options...
Gfted1 Posted August 22, 2018 Share Posted August 22, 2018 DNA shows girl had one Neanderthal, one Denisovan parent. 2 "I'm your biggest fan, Ill follow you until you love me, Papa" Link to comment Share on other sites More sharing options...
rjshae Posted August 26, 2018 Share Posted August 26, 2018 Common WiFi Can Detect Weapons, Bombs, and Chemicals in Bag "It has just been discovered that research causes cancer in rats." Link to comment Share on other sites More sharing options...
Gfted1 Posted September 5, 2018 Share Posted September 5, 2018 Too Good to Be True? A Nonaddictive Opioid without Lethal Side Effects Shows Promise. "I'm your biggest fan, Ill follow you until you love me, Papa" Link to comment Share on other sites More sharing options...
injurai Posted September 8, 2018 Share Posted September 8, 2018 Ingenuity at work. I didn't expect what are essentially soap bubbles to be leveraged in such a way. 1 Link to comment Share on other sites More sharing options...
injurai Posted September 9, 2018 Share Posted September 9, 2018 Is this the first thing comparable to a flying car? 2 Link to comment Share on other sites More sharing options...
Gfted1 Posted September 13, 2018 Share Posted September 13, 2018 A third dimension helps Tokamak fusion reactor avoid wall-destroying instability. 1 "I'm your biggest fan, Ill follow you until you love me, Papa" Link to comment Share on other sites More sharing options...
Gfted1 Posted September 13, 2018 Share Posted September 13, 2018 APL-Led Asteroid-Deflection Mission Passes Key Development Milestone. "I'm your biggest fan, Ill follow you until you love me, Papa" Link to comment Share on other sites More sharing options...
InsaneCommander Posted September 13, 2018 Share Posted September 13, 2018 Article on feasibility of different orbital launch systems. https://www.realclearscience.com/blog/2018/07/14/will_we_ever_stop_using_rockets_to_get_to_space.html I've always wondered why lighter-that-air lift systems haven't gotten more thought in designing orbital launch systems? The USAF (then) and the DHS (now) run a program called TARS (Tethered Aerostat Radar System) that uses semi rigid aerostats to lift a 20k kg payload. The max the Falcon 9 can lift is 54k kg. take away the fuel requirements to generate sufficient lift from sea level and it should be in the ballpark. Just a thought. Edit: The TARS payload is actually 1k kg. The aerostats have a max theoretical lift of 5k kg. Multiple aerostats can be used. Again, theoretically. TARS does not need to do it but it can be done. My favorite is the Orbital Ring. But it's far from feasible... This channel has very good videos for most launch systems. I highly recommend checking it. Link to comment Share on other sites More sharing options...
Gfted1 Posted September 20, 2018 Share Posted September 20, 2018 Watch a Satellite Net a Cubesat in Awesome Space Junk Cleanup Test. "I'm your biggest fan, Ill follow you until you love me, Papa" Link to comment Share on other sites More sharing options...
Recommended Posts