DynaRig MotorSailer, ala Maltese Falcon

Discussion in 'Motorsailers' started by brian eiland, Mar 9, 2007.

  1. richard sauter
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    richard sauter Junior Member

  2. Timothy
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    Timothy Senior Member

    People in the stone age lived lived better and longer than the majority of people today. It was't until we ate the forbidden fruit and adopted agriculture that rich people became possible. Its been all down hill for everybody else since then.
  3. CT 249
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    CT 249 Senior Member

    Could you please provide us with information to back this claim?
  4. richard sauter
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    richard sauter Junior Member


    I see now that what I said was a gross overstatement of the facts. Of course you are right, a poorly made, poorly designed wingsail of the same area might not always beat a rag, but properly designed and properly made it should in boats over 50 feet. Why else did the Oracle keep it a secrete?

    If I had said in vessels over 18 feet would I be correct?

    Thanks for taking the time to help me get my facts straight.




  5. CT 249
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    CT 249 Senior Member

    Lots of sailors have kept lots of things secret; Australia II's wing keel, the Kiwi Hula, Mariner's stern, Conner's multiple certificates are some that spring to mind. Not all of them work, so the fact that an AC team keeps something secret has no bearing on whether or not something works.

    For the rest of it, much remains to be seen. One inshore light-wind regatta where a huge high tech cat raced a huge high tech tri is not what anyone would call a good test of all-round all-weather ability. Yeah, in the conditions the AC was sailed in, the wing was outstanding - but whether such a rig would handle ocean conditions or perform oustandingly well on a heavier boat is something we've never seen tested.

    I've never used a solid wing, but I've sailed with and owned a bunch of wing masts and wing-like extended luff pockets. While they are impressive performers, in reality they never seem to show the sort of speed advantage that is often claimed for them in theory. I've always found it interesting (and probably highly significant) that there are about three distinct types of craft where wing masts, wing sails and wing-style large pocket luffs perform really well, but there's another bunch of craft where they don't seem to show a performance advantage.
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    FAST FRED Senior Member

    "People in the stone age lived lived better and longer than the majority of people today."

    If you liked dieing (most) before the age of 5, or living to the ripe old age of 30 then dieing , you will love the stone age.

    No dentist , no drugs or antibotics , no food but what they found wandering about, , not exactally most folks idea of Utopia.

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  7. ancient kayaker
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    ancient kayaker aka Terry Haines

    -and some of the food would try to kill you! Mind you, when I think of all the salt and cholesterol in a hamburger ...
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  8. Timothy
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    Timothy Senior Member

    Author And Page Information
    by Anup ShahThis Page Last Updated Sunday, March 28, 2010
    This page: http://www.globalissues.org/article/26/poverty-facts-and-stats.
    To print all information e.g. expanded side notes, shows alternative links, use the print version:
    Almost half the world — over three billion people — live on less than $2.50 a day.

    At least 80% of humanity lives on less than $10 a day.Source 1

    More than 80 percent of the world’s population lives in countries where income differentials are widening.Source 2

    The poorest 40 percent of the world’s population accounts for 5 percent of global income. The richest 20 percent accounts for three-quarters of world income.Source 3

    According to UNICEF, 24,000 children die each day due to poverty. And they “die quietly in some of the poorest villages on earth, far removed from the scrutiny and the conscience of the world. Being meek and weak in life makes these dying multitudes even more invisible in death.”Source 4

    Around 27-28 percent of all children in developing countries are estimated to be underweight or stunted. The two regions that account for the bulk of the deficit are South Asia and sub-Saharan Africa.

    If current trends continue, the Millennium Development Goals target of halving the proportion of underweight children will be missed by 30 million children, largely because of slow progress in Southern Asia and sub-Saharan Africa.Source 5

    Based on enrolment data, about 72 million children of primary school age in the developing world were not in school in 2005; 57 per cent of them were girls. And these are regarded as optimisitic numbers.Source 6

    Nearly a billion people entered the 21st century unable to read a book or sign their names.Source 7

    Less than one per cent of what the world spent every year on weapons was needed to put every child into school by the year 2000 and yet it didn’t happen.Source 8

    Infectious diseases continue to blight the lives of the poor across the world. An estimated 40 million people are living with HIV/AIDS, with 3 million deaths in 2004. Every year there are 350–500 million cases of malaria, with 1 million fatalities: Africa accounts for 90 percent of malarial deaths and African children account for over 80 percent of malaria victims worldwide.Source 9

    Water problems affect half of humanity:

    Some 1.1 billion people in developing countries have inadequate access to water, and 2.6 billion lack basic sanitation.
    Almost two in three people lacking access to clean water survive on less than $2 a day, with one in three living on less than $1 a day.
    More than 660 million people without sanitation live on less than $2 a day, and more than 385 million on less than $1 a day.
    Access to piped water into the household averages about 85% for the wealthiest 20% of the population, compared with 25% for the poorest 20%.
    1.8 billion people who have access to a water source within 1 kilometre, but not in their house or yard, consume around 20 litres per day. In the United Kingdom the average person uses more than 50 litres of water a day flushing toilets (where average daily water usage is about 150 liters a day. The highest average water use in the world is in the US, at 600 liters day.)
    Some 1.8 million child deaths each year as a result of diarrhoea
    The loss of 443 million school days each year from water-related illness.
    Close to half of all people in developing countries suffering at any given time from a health problem caused by water and sanitation deficits.
    Millions of women spending several hours a day collecting water.
    To these human costs can be added the massive economic waste associated with the water and sanitation deficit.… The costs associated with health spending, productivity losses and labour diversions … are greatest in some of the poorest countries. Sub-Saharan Africa loses about 5% of GDP, or some $28.4 billion annually, a figure that exceeds total aid flows and debt relief to the region in 2003.Source 10
    Number of children in the world
    2.2 billion
    Number in poverty
    1 billion (every second child)
    Shelter, safe water and health
    For the 1.9 billion children from the developing world, there are:

    640 million without adequate shelter (1 in 3)
    400 million with no access to safe water (1 in 5)
    270 million with no access to health services (1 in 7)
    Children out of education worldwide
    121 million
    Survival for children

    10.6 million died in 2003 before they reached the age of 5 (same as children population in France, Germany, Greece and Italy)
    1.4 million die each year from lack of access to safe drinking water and adequate sanitation
    Health of children

    2.2 million children die each year because they are not immunized
    15 million children orphaned due to HIV/AIDS (similar to the total children population in Germany or United Kingdom)
    Source 11

    Rural areas account for three in every four people living on less than US$1 a day and a similar share of the world population suffering from malnutrition. However, urbanization is not synonymous with human progress. Urban slum growth is outpacing urban growth by a wide margin.Source 12

    Approximately half the world’s population now live in cities and towns. In 2005, one out of three urban dwellers (approximately 1 billion people) was living in slum conditions.Source 13

    In developing countries some 2.5 billion people are forced to rely on biomass—fuelwood, charcoal and animal dung—to meet their energy needs for cooking. In sub-Saharan Africa, over 80 percent of the population depends on traditional biomass for cooking, as do over half of the populations of India and China.Source 14

    Indoor air pollution resulting from the use of solid fuels [by poorer segments of society] is a major killer. It claims the lives of 1.5 million people each year, more than half of them below the age of five: that is 4000 deaths a day. To put this number in context, it exceeds total deaths from malaria and rivals the number of deaths from tuberculosis.Source 15

    In 2005, the wealthiest 20% of the world accounted for 76.6% of total private consumption. The poorest fifth just 1.5%:

    The poorest 10% accounted for just 0.5% and the wealthiest 10% accounted for 59% of all the consumption:

    Source 16

    1.6 billion people — a quarter of humanity — live without electricity:

    Breaking that down further:

    Number of people living without electricity
    Region Millions without electricity
    South Asia 706
    Sub-Saharan Africa 547
    East Asia 224
    Other 101
    The GDP (Gross Domestic Product) of the 41 Heavily Indebted Poor Countries (567 million people) is less than the wealth of the world’s 7 richest people combined.Source 18

    World gross domestic product (world population approximately 6.5 billion) in 2006 was $48.2 trillion in 2006.

    The world’s wealthiest countries (approximately 1 billion people) accounted for $36.6 trillion dollars (76%).
    The world’s billionaires — just 497 people (approximately 0.000008% of the world’s population) — were worth $3.5 trillion (over 7% of world GDP).
    Low income countries (2.4 billion people) accounted for just $1.6 trillion of GDP (3.3%)
    Middle income countries (3 billion people) made up the rest of GDP at just over $10 trillion (20.7%).Source 19
    The world’s low income countries (2.4 billion people) account for just 2.4% of world exportsSource 20

    The total wealth of the top 8.3 million people around the world “rose 8.2 percent to $30.8 trillion in 2004, giving them control of nearly a quarter of the world’s financial assets.”

    In other words, about 0.13% of the world’s population controlled 25% of the world’s financial assets in 2004.Source 21

    For every $1 in aid a developing country receives, over $25 is spent on debt repayment.Source 22

    51 percent of the world’s 100 hundred wealthiest bodies are corporations.Source 23

    The wealthiest nation on Earth has the widest gap between rich and poor of any industrialized nation.Source 24

    The poorer the country, the more likely it is that debt repayments are being extracted directly from people who neither contracted the loans nor received any of the money.Source 25

    In 1960, the 20% of the world’s people in the richest countries had 30 times the income of the poorest 20% — in 1997, 74 times as much.Source 26

    An analysis of long-term trends shows the distance between the richest and poorest countries was about:

    3 to 1 in 1820
    11 to 1 in 1913
    35 to 1 in 1950
    44 to 1 in 1973
    72 to 1 in 1992Source 27
    “Approximately 790 million people in the developing world are still chronically undernourished, almost two-thirds of whom reside in Asia and the Pacific.”Source 28

    For economic growth and almost all of the other indicators, the last 20 years [of the current form of globalization, from 1980 - 2000] have shown a very clear decline in progress as compared with the previous two decades [1960 - 1980]. For each indicator, countries were divided into five roughly equal groups, according to what level the countries had achieved by the start of the period (1960 or 1980). Among the findings:

    Growth: The fall in economic growth rates was most pronounced and across the board for all groups or countries.
    Life Expectancy: Progress in life expectancy was also reduced for 4 out of the 5 groups of countries, with the exception of the highest group (life expectancy 69-76 years).
    Infant and Child Mortality: Progress in reducing infant mortality was also considerably slower during the period of globalization (1980-1998) than over the previous two decades.
    Education and literacy: Progress in education also slowed during the period of globalization.Source 29
    A mere 12 percent of the world’s population uses 85 percent of its water, and these 12 percent do not live in the Third World.Source 30

    Consider the global priorities in spending in 1998

    Global Priority $U.S. Billions
    Cosmetics in the United States 8
    Ice cream in Europe 11
    Perfumes in Europe and the United States 12
    Pet foods in Europe and the United States 17
    Business entertainment in Japan 35
    Cigarettes in Europe 50
    Alcoholic drinks in Europe 105
    Narcotics drugs in the world 400
    Military spending in the world 780
    And compare that to what was estimated as additional costs to achieve universal access to basic social services in all developing countries:

    Global Priority $U.S. Billions
    Basic education for all 6
    Water and sanitation for all 9
    Reproductive health for all women 12
    Basic health and nutrition 13
    Source 31

    Notes And Sources
    Shaohua Chen and Martin Ravallion, The developing world is poorer than we thought, but no less successful in the fight against poverty, World Bank, August 2008
    For the 95% on $10 a day, see Martin Ravallion, Shaohua Chen and Prem Sangraula, Dollar a day revisited, World Bank, May 2008. They note that 95% of developing country population lived on less than $10 a day. Using 2005 population numbers, this is equivalent to just under 79.7% of world population, and does not include populations living on less than $10 a day from industrialized nations.
    This figure is based on purchasing power parity (PPP), which basically suggests that prices of goods in countries tend to equate under floating exchange rates and therefore people would be able to purchase the same quantity of goods in any country for a given sum of money. That is, the notion that a dollar should buy the same amount in all countries. Hence if a poor person in a poor country living on a dollar a day moved to the U.S. with no changes to their income, they would still be living on a dollar a day.

    The new poverty line of $1.25 a day was recently announced by the World Bank (in 2008). For many years before that it had been $1 a day. But the $1 a day used then would be $1.45 a day now if just inflation was accounted for.

    The new figures from the World Bank therefore confirm concerns that poverty has not been reduced by as much as was hoped, although it certainly has dropped since 1981.

    However, it appears that much of the poverty reduction in the last couple of decades almost exclusively comes from China:

    China’s poverty rate fell from 85% to 15.9%, or by over 600 million people
    China accounts for nearly all the world’s reduction in poverty
    Excluding China, poverty fell only by around 10%

    The use of the poverty line of $1 a day had long come under criticism for seeming arbitrary and using poor quality and limited data thus risking an underestimate of poverty. The $1.25 a day level is accompanied with some additional explanations and reasoning, including that it is a common level found amongst the poorest countries, and that $2.50 represents a typical poverty level amongst many more developing countries.

    The $10 dollar a day figure above is close to poverty levels in the US, so is provided here to give a more global perspective to these numbers, although the World Bank has felt it is not a meaningful number for the poorest because they are unfortunately unlikely to reach that level any time soon.

    For further details on this (as well as some additional charts), see Poverty Around The World on this web site. back

    2007 Human Development Report (HDR), United Nations Development Program, November 27, 2007, p.25. back
    See Today, over 24,000 children died around the world from this web site. (Note that the statistic cited uses children as those under the age of five. If it was say 6, or 7, the numbers would be even higher.)back
    See the following:
    2007 Human Development Report (HDR), United Nations Development Program, November 27, 2007, p.25. (The report also notes that although India is rising economically, “the bad news is that this has not been translated into accelerated progress in cutting under-nutrition. One-half of all rural children [in India] are underweight for their age—roughly the same proportion as in 1992.”)
    Millennium Development Goals Report 2007
    Millennium Development Goals Report 2007 . The report importantly notes that “As high as this number seems, surveys show that it underestimates the actual number of children who, though enrolled, are not attending school. Moreover, neither enrolment nor attendance figures reflect children who do not attend school regularly. To make matters worse, official data are not usually available from countries in conflict or post-conflict situations. If data from these countries were reflected in global estimates, the enrolment picture would be even less optimistic.”back
    The State of the World’s Children, 1999, UNICEFback
    State of the World, Issue 287 - Feb 1997, New Internationalistback
    2007 Human Development Report (HDR), United Nations Development Program, November 27, 2007, p.25. back
    2006 United Nations Human Development Report, pp.6, 7, 35 back
    State of the World’s Children, 2005, UNICEFback
    2007 Human Development Report (HDR), United Nations Development Program, November 27, 2007, p.25. back
    Millennium Development Goals Report 2007 back
    Ibid, p.45 back
    Ibid, p.45 back
    World Development Indicators 2008, World Bank, August 2008 back
    Millennium Development Goals Report 2007 , p.44 back
    See the following:
    World Bank Key Development Data & Statistics, World Bank, accessed March 3, 2008
    Luisa Kroll and Allison Fass, The World’s Richest People, Forbes, March 3, 2007
    World Bank’s list of Heavily Indebted Poor Countries (41 countries), accessed March 3, 2008
    See the following:
    World Bank Key Development Data & Statistics, World Bank, accessed March 3, 2008
    Luisa Kroll and Allison Fass, The World’s Richest People, Forbes, March 3, 2007
    Trade Data, World Bank Data & Statistics, accessed March 3, 2008 back
    Eileen Alt Powell, Some 600,000 join millionaire ranks in 2004, Associate Press, June 9, 2005 back
    Based on World Bank data (accessed March 3, 2008) as follows:
    Total debts of the developing world in 2006: $2.7 trillion
    Total official development assistance in 2006: $106 billion
    See the following:
    Holding Transnationals Accountable, IPS, August 11, 1998
    Top 200: The Rise of Corporate Global Power, by Sarah Anderson and John Cavanagh, Institute for Policy Studies, November 2000
    Log cabin to White House? Not any more, The Observer, April 28, 2002back
    Debt - The facts, Issue 312 - May 1999, New Internationalistback
    1999 Human Development Report, United Nations Development Programmeback
    World Resources Institute Pilot Analysis of Global Ecosystems, February 2001, (in the Food Feed and Fiber section). Note, that despite the food production rate being better than population growth rate, there is still so much hunger around the world.back
    The Scorecard on Globalization 1980-2000: Twenty Years of Diminished Progress, by Mark Weisbrot, Dean Baker, Egor Kraev and Judy Chen, Center for Economic Policy and Research, August 2001.back
    Maude Barlow, Water as Commodity - The Wrong Prescription, The Institute for Food and Development Policy, Backgrounder, Summer 2001, Vol. 7, No. 3back
    Consumerism, Volunteer Now! (undated) back
    Where Next?
    Related articles
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    Anup Shah, Poverty Facts and Stats, Global Issues, Updated: March 28, 2010

    “When I give food to the poor, they call me a saint. When I ask why the poor have no food, they call me a communist.” — Dom Helda Camara
    © Copyright 1998–2010
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  9. dskira

    dskira Previous Member

    No offence, but are you sure you are on the right thread.
    Very interresting indeed. Thanks.
    Check the general topics, your input can be very valuable. we surely need people like you.
  10. brian eiland
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    brian eiland Senior Member

    Hi Jacked subject thread

    Too bad...looks like this subject thread has gotten hi-jacked with unrelated STUFF :(
  11. Timothy
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    Timothy Senior Member

    My apologies. I am not trying to high jack this thread .My post was perhaps inappropriate and certainly off topic It was a knee jerk reaction. As I have for some time now been trying to develop a balanced rig for my own boat I am very interested in the subject of this thread and would not want to hinder the discussion.
  12. AdvShipbuilding
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    AdvShipbuilding Junior Member

    I just finished my thesis on wingsails, windtunnel testing one versus a classic sail and checking performance . Coming across this formum in the search of nasa research i wanted to put a little info here. I'm graduating as naval engineer within a month and last year won the naval engeneering price with my new wingsail prototype, so as thesis I went testing...

    Below a model out of my study.

    When both sails have the same camber (5%) like normally the following is a fact: Wingsails are better at low angles. And classic sails at higher angles.
    The best sail is actually a combination. Within that study for the university I developed a wingsail with adjustable camber. This sail can adapt itself camber by a system so you always have optimal performance.
    This kind of adjustable camber wingsails are the future.

    For the attachment: profielzeil is dutch for wingsail. Below are the angles horizontaly. Vertical you have the windforce generated at same condition of wind at 1.1m/s. The scale is in gram as the forces were measured realtime by a electronic balance. For those who want to scale the information. The sail surface was in all cases 0.438m².

    Attached Files:

    Last edited: May 26, 2010
  13. brian eiland
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    brian eiland Senior Member

    Reversible Camber Wing Sail

    How about a reversible camber wing sail?..did you play with this idea? ...where the camber on a Maltese type rig could be reversed without 'tacking' the rig' ??
  14. AdvShipbuilding
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    AdvShipbuilding Junior Member

    The wingsail I made for the study can camber in both ways (Starboard to port). I used Sail tissue on both sides of the mast. It is formed in naca by the battons. With a pully system within, the desired camber can be done to the desired side.
    For a full size wingsail I've also drawn a rigging system so it could be operated like a normal sail for pleasure yachts.
    The only thing here is that because of it's complexity the comany will need to test the system first on its user friendlyness and it may need modifications during testing.
    I'm not familiar with the maltese type rig so I'm going to look it up. I hope the above explaination helps.

    Attached Files:

    Last edited: May 26, 2010

  15. AdvShipbuilding
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    AdvShipbuilding Junior Member

    If there were no rich, there were no company's, no company's mean no workers; So in other words no jobs for the workers, no job = no income,
    It is often forgotten that the more profit, the higher the bonuses and the more employees a company employes. Never forget that being poor is mostely due to no job. Everyone who works, earnes. The more you work , the more you earn.. simple mathematics. For the third world country's when they use support for war or it is lost in governmental treasuries its not our own fault. Company's like Suez have tried alot in Africa. But the problem is that working was simply not as easy as doing nothing. And there is your development problem. How do you help an entire continent of ppl who mostly want it easy; no work... It doesn't work that way...
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