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http://forums.pelicanparts.com/uploa...1721308183.jpg http://forums.pelicanparts.com/uploa...1721308183.jpg http://forums.pelicanparts.com/uploa...1721308183.jpg http://forums.pelicanparts.com/uploa...1721308183.jpg Hand starting a John Deere Model D, the guy is pulling strong the flywheel to start the engine. |
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http://forums.pelicanparts.com/uploa...1721394610.jpg http://forums.pelicanparts.com/uploa...1721394610.jpg Fossilized pizza from the late crustaceous period. http://forums.pelicanparts.com/uploa...1721394610.jpg http://forums.pelicanparts.com/uploa...1721394610.jpg http://forums.pelicanparts.com/uploa...1721394610.jpg |
Adam West's listing when he lived in Ketchum Idaho.
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Stunning photo from the far side or "the dark side" of the Moon captured by the Chinese Chang'e 5-T1 spacecraft in 2014. http://forums.pelicanparts.com/uploa...1721442955.jpg US image the US takes from L1? http://forums.pelicanparts.com/uploa...1721442955.jpg John Young works at the Lunar Roving Vehicle (LRV) near the Lunar Module Orion on Apollo 16 in Apr. 1972. The LRV could be folded into a space 59 inches (length) by 45 inches (width) by 44 inches (height). When deployed, the LRV had a length of 120 inches (10 feet), a width of 72 inches (6 feet), and a height of 48 inches (4 feet). Unloaded, it weighed 460 lb (209 kg) on Earth and 76 lb (35 kg) on the Moon. Each wheel was independently driven by a 1⁄4 horsepower (200 W) electric motor. Although it could be driven by either astronaut, the commander always drove. Travelling at speeds up to 6 to 8 mph (10 to 12 km/h), it meant that the astronauts could travel far afield from their lander and still have enough time to do some scientific experiments. http://forums.pelicanparts.com/uploa...1721442955.jpg German workers pose with downed British Spitfire P9374 near Calais, France in 1940. It was brought down over the coast, and its pilot, Flying Officer Peter Cazenove, carried out a perfect belly landing on the beach near Calais, radioing back "Tell mother I’ll be home for tea!. Cazenove participated in holding off German forces around Calais before he was captured as a POW. He was kept at Stalag Luft III, participating in the historic events of "Great Escape", although he was unable to escape himself. His Spitfire remained in the same location until the 1980s. It was recovered, and eventually restored to flying condition in 2011. http://forums.pelicanparts.com/uploa...1721442955.jpg With a fuel load of 33,626 gallons of aviation gas and 1,500 gallons of engine oil, the B-36 Peacemaker required a fleet of tanker trucks for each fill-up. At cruising speed this B model’s six Pratt & Whitney Wasp Major R-4360 engines consumed 600 gallons of gas an hour. Each 28 cylinder engine had its own 250 gallon engine oil tank. Each cylinder had two spark plugs for a total of 336 per plane. Now that is an expensive gas station stop! http://forums.pelicanparts.com/uploa...1721442955.jpg |
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http://forums.pelicanparts.com/uploa...1721478881.jpg http://forums.pelicanparts.com/uploa...1721478881.jpg On July , 1914, American physicist and inventor Robert H. Goddard (1882-1945) was awarded U.S. Patent No. 1,102,653 for a "rocket apparatus." Goddard's patent covered a multi-stage rocket, which represented a milestone in the history of rocketry. Designed to loft scientific instruments to new heights, the concept also proved critical to the later development of launch vehicles for space flight. Goddard is considered the father of modern rocketry. Photo provided by the Office of the Space Force Historian http://forums.pelicanparts.com/uploa...1721478881.jpg http://forums.pelicanparts.com/uploa...1721478881.jpg http://forums.pelicanparts.com/uploa...1721478881.jpg |
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Livaria Lello is the name of the notable bookstore in Porto, Portugal that inspired JK Rowling in Writing the Harry Potter series. Known as a reader and writer hangout since its inception in 1906, the bookstore includes the fantastical twisting stairwell reminiscent of Harry Potter's Hogwarts http://forums.pelicanparts.com/uploa...1721480313.jpg http://forums.pelicanparts.com/uploa...1721480313.jpg The Corinth Canal, like someone took a big knife and sliced through Greece. Spanning 6.4 kilometers in length and completed in 1893, its construction required extensive excavation through solid rock, the canal is a crucial shortcut for maritime traffic between the eastern and western Mediterranean. http://forums.pelicanparts.com/uploa...1721480313.jpg http://forums.pelicanparts.com/uploa...1721480313.jpg http://forums.pelicanparts.com/uploa...1721480313.jpg |
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http://forums.pelicanparts.com/uploa...1721515108.jpg http://forums.pelicanparts.com/uploa...1721515108.jpg World's First Variable Density Wind Tunnel¹ (1923) The historic NACA² Langley Laboratory's VDT was a 77.3 t pressure tank rated at 20 atmospheres, 10.5 m long, 4.6 m in diameter, and 54 mm thick. It had a closed-circuit design with an annular return flow powered by a fan attached to a 184 kW motor producing air speeds up to 82 km/h. Before 1923, atmospheric pressure wind tunnels³ only gave valid results for full scale models of aircraft parts, experimental results obtained using scale models in these tunnels were open to question because a special parameter called the Reynolds number⁴ did not match those encountered in the actual flights. The Reynolds number of a 1/20-scale model would be too low by a factor of 20 as shown by Osborne Reynolds in his classic 1883 experiment and since this number is used to predict the transition from laminar flow⁵ to turbulent flow⁶, radically different airflow conditions will occur between model and full-sized aircraft. Since the Reynolds number is proportional to air density, a wind tunnel has to be pressurized to 20 atmospheres when using a 1/20-scale model for more accurate testing. Simulating higher altitudes is then a simple matter of pressurizing at less than 20 atmospheres. The VDT at the National Advisory Committee for Aeronautics had a unique high-Reynolds number capability and was used to design the Douglas DC-3, the Boeing B-17 Flying Fortress, and even the 713 km/h Lockheed P-38 Lightning! http://forums.pelicanparts.com/uploa...1721515108.jpg http://forums.pelicanparts.com/uploa...1721515108.jpg The Orthomat was a solid-state numerically controlled engineering drafting machine made by Universal Drafting Machine Company from Cleveland Ohio (1963). It automatically translated complex mathematical formulas defined on punched or magnetic tape into accurate engineering drawings at speeds up to 85 mm/s, designed to operate as a part of a total computer engineering system, correlating with other numerically controlled data, production and inspection machines or standalone. The device is a coordinate, continuous-line contouring plotter, capable of drawing straight lines, angles, curves, circles or ellipses on paper up to 152×366 cm. It has an automatic indexing hex turret for mounting a variety of stylii. Controls permit scaling of drawings (¼, ½, full, 2×) and "mirror image". The numerical control director supplies command pulses and may be any manual or tape (punched or magnetic) input device which can supply incremental X & Y pulses of 0.0254 mm (1 mil) value at a controlled rate, plus auxiliary signals to control the stylii. The drafting machine controls all motions of a variety of scribing devices and consists of an aluminum table with desktop linoleum surface, a vacuum chuck, and a large scale digital X-Y plotter using a a precision rack and pinion drive. Controls govern X, Y and Z motion, jogging, stepping in 0.0254 mm increments, feedrate override of speed, stylus indexing, an dash-line generation. Actual position is readout for any two of X,Y and Z axes to the nearest 0.0254 mm. Zero positioning is automatic, and readouts may be reset to zero anywhere on the board to accommodate dimensioning of drawings in which the 0-0 position is off the table. A maintenance feature includes a built-in customer engineer's test panel for quick pinpointing of any malfunction. http://forums.pelicanparts.com/uploa...1721515108.jpg Apollo 11. Space Date: July 1969 Photos ID: AS11-36-5389, AS11-36-5391 and AS11-36-5392 Color Film Scan. Balanced. Pilot Edwin E. Aldrin is inside the Lunar Module during the Moon Trip. Photo Credit: NASA. JSC. Panorama, illumination adjustment, and compensation balance for red and green: |
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