Comments on: Aviation spirit What makes a great picture? Thu, 18 Aug 2016 11:13:37 +0000 hourly 1 By: Anonymous1533 Tue, 20 Aug 2013 05:23:09 +0000 This is pretty Amazing seeing Native Americans commit to their own Technology development through Trial and Error. Native Americans never had “Western” Education when they built the Inca and Mayan Empires so they don’t need “Western” Education for modern “trial and Error” technological development.

By: ChrisHerz Mon, 05 Sep 2011 00:30:31 +0000 Low cost aircraft are badly needed in third world countries. The fall of the USSR helped some, but most of those aircraft are now worn out and need replacement.
I’d like to see these guys succeed but they have a difficult problem. Let’s hope no one gets hurt.

By: paintcan Sun, 04 Sep 2011 19:56:54 +0000 @Ian_Kenmish – Sikorshy aircraft in Long Island was where my father worked at the time. He knew the man. It didn’t take high speed computers to figure out the vibration problem. He used a slide rule. The problem was solved in the early 50’s. They were used extensively in the Korean War.

The Wright bros. were working at a time when everything about aircraft design was more or less unknown. And a plane can fly without power as a glider. If you know how to do it you can make a powerless landing. I can’t, because I never went on to learn how to fly beyond taking the control in the air and trying to stay level and on course and to maintain speed. It would have been a very expensive hobby. I didn’t try to pursue it because, unless you love it and have the time and income, it takes several hours every year to stay certified and to keep the plane up to date.

The Helicopter was the invention of professional engineers. Sikorsky was making planes prior to the helicopter. The man was the offshoot of Polish aristocrats I recently found out. You can actually find their old estate on Wikipedia. I think he had to flee Hitler. There’s another name to look up. He’d had an education in civil engineering. They didn’t anticipate the vibration problem. That was one of the first problems my father worked on. And he doesn’t trust them to this day.

Volunteer to be their first test pilot. But please tell them not to take the kids with them before they know it will fly for several hours without breaking up.

You’re not a fan of the “Astronaut Farmer” are you? That movie was lunacy. That character bankrupted his family, could have destroyed his entire homestead (he burned down his barn) and almost killed everyone in the vicinity and the writers suggested that it was narrow mindedness and envy on the part of the FAA (I can’t quite remember the details) that he was given such grief in the pursuit of his “dream”. It would be a charming and uplifting tale it weren’t for the fact that the man was actually building a WMD and didn’t seem to realize it.

The Wright Bros. weren’t working with scrap metal and neither was Sikorsky aircraft. The Helicopter is a tour de force. But it isn’t unknown territory. They could hit the books themselves or find someone who can help them. What they are really building is a helicopter sculpture – from the sounds of it.

By: Ian_Kemmish Sun, 04 Sep 2011 18:33:54 +0000 The Eeyores amongst the commenters here may want to consider whether or not they would have given the same advice to Igor Sikorksy in the 1930’s, simply because he didn’t have access then to the body of knowledge they do now? Or do they believe that Bolivian technology is somehow in excess of 80 years behind first world technology?

How many helicopters were built in the USA before the advent of finite element analysis after fast computers appeared in the 1970’s? Ten thousand? Fifty thousand?

When I was at school, I learnt that if the Wright brothers’ wing-warping technology had really worked in the way they imagined it did, the Flyer would have buried itself in the ground immediately. Fortunately for all of us, the mistakes in their calculations just offset their lack of understanding of aerodynamics. This is what we, in the West, used to call progress….

By: pantognoni Sun, 04 Sep 2011 14:26:08 +0000 President Evo Morales would do well to look into this risky enterprise sooner than later as the points made regarding safety and certification are well taken. I work as an aerospace machinist/technician and would be concerned even if these talented guys were simply building ultralight planes instead of helicopters. FEA is the science of structural stess/strain on load bearing structures at all levels of physics and I’m betting that science isn’t being applied in at any real level in this primitive craft effort. Word of advice: Stick to off road vehicle roof racks and bumpers for now, guys. They only have 6 feet at the most to hit the ground.

By: GA_Chris Sun, 04 Sep 2011 13:32:27 +0000 Sadly, this will all end in tears… Even if by some miracle this thing flies without killing them, it will never get certified

By: paintcan Sun, 04 Sep 2011 13:01:56 +0000 They had better learn some aeronautical engineering first. Helicopters have a problem with vibration. They can tear themselves apart by shaking themselves to pieces.

My father used to work on these things as an aerospace engineer. He mentioned how the rotor can develop several modes of vibration that can reinforce each other until the rotor throws itself out of alignment and the blades fly off. Helicopters are not capable of loosing even a few inches from a blade or they fall like stones. They can’t glide. The blades have to balance each other perfectly or it’s easy to visualize what happens.

They also don’t appear to have any reliable way of determining whether the welds are strong enough, not so much around the passenger seat frame but around the engine and rotor.

They could be building their own death traps. Helicopters were not built by backyard mechanics using scrap metal. They shouldn’t be trying to build these things. They don’t have the knowledge or the materials.

I’m sending this link to my father and he could explain better what the issues are.

But before any of them tried to fly the thing they should weight the landing frame and run the engine and rotor for a long time and get out of the way.

They would be better off trying to build low cost ground transportation for local use.

By: jopeza Sat, 03 Sep 2011 13:42:06 +0000 Create and believe, is what it takes
Jorge Perez

By: rodri200000 Fri, 02 Sep 2011 14:53:50 +0000 Impressive