everything that is made for portable unfortunately has to be made at light as possible while still being able to perform. Good to be a Responsible manufacture and follow best practices, but the gov goes to far at times and manufacturing becomes to costly to do in the US so it is moved overseas where very little or if any environmental controls are followed, CRAZY. 3 parts per billion of Beryllium in the copper I would be machining, you get more of that in some vaccines. One things leads to another, so now I have contaminated metal's, and contaminated coolant to dispose of. Beryllium is very toxic and you must flood the material with coolant to keep from any particles to become air born.
Paperwork alone was a full time job.Īnd because of this I turned away some good paying machine work because it cost me more to dispose of some of the metal cuttings because some contained small amounts of Beryllium in the copper. I owned and operated a Machine shop (Job shop) for years, but the gov started in on requiring me to be responsible for every type materials, and every chemical that came through my shop. If you are on the book, theres a good user group there too as well as groups.ioĬlick to expand.You are so right, Crazy world, and if is not screwed up let the government get involved they can take care of that. Ill help anytime I can, my email is good on qrz. I hope you are able to enjoy your antenna in the future. now, i doubt it would withstand 20mph wnds, but i wouldn't put an antenna up in those winds in the first place. On my BSPRO I place my accessory bag on a "hook" under the versa mount, this gives it a good bit of stability. As far as it toppling over, im not sure what mount you are using if its the bspro or the regular one with possibly a tripod but most tripods / mounts when its windy does need some type of guying. I hope if you still have it maybe you can re-visit when you have more time and see if you can get it setup correctly. Theres a system to it just like anything else. Once its setup correctly, when you take it to the field you should in most situations only have to roll in or out the counter poise wire to fine tune. I hear people say its "fiddly" and normally after talking to them they are referring to tuning and even after that, they figured out they werent tuning it correctly. TECHNOLOGY & ENGINEERING - Engineering (General)ĭeep space propulsion : a roadmap to interstellar flightĭeep space propulsion : a roadmap to interstellar flight / K.F.Click to expand.im sorry you had that problem.
Space vehicles - Propulsion systems - Design and construction Solr Details accelerated_reader_point_valueġ online resource (xxi, 367 pages) : illustrations (some color) Reload Cover Reload Enrichment Grouping Information Grouped Work IDĭeep space propulsion a roadmap to interstellar flight Our commitment today to achieve near-term goals will ensure a tomorrow for the generations ahead. But if we start to develop these technologies today, then it is likely that one of them will come to technological maturity at some point in the coming centuries and will power our species to the stars. Today, society is not in a position to launch the types of missions outlined in this book, mainly due to a lack of political motivations to try and the economic cost for launching it. In fact, the only way to assure a future is to start planning for it now and then progress incrementally. Despite the problems of today it is important that we take a long-term view for the future of our species. Long takes us on all the possible journeys - the mission targets, the technologies we might use to power such journeys, and what scientific knowledge we are seeking to obtain upon arriving there. An impacting asteroid ended the reign of the dinosaurs, and today we have many other threats such as global war, climate change, pollution, resource limitations and overpopulation. And the possibilities for catastrophe are great. This is necessary so that if anything catastrophic happened to Earth, our species would survive. It is vital that we develop the deep space propulsion technologies that will take us there, first to explore with robotic probes, then to follow ourselves.
As humans take their first tentative steps off our home planet, and debate the costs/benefits of sending people back to the Moon and perhaps on to Mars, we must also start to make plans for the day when we will venture forth as pioneers farther out into the Solar System and beyond - perhaps far, far beyond - to explore and settle new worlds around other stars.