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Udat

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  1. Except maybe a north Atlantic map. That would be beyond descriptionally amazing.
  2. I bet it might not be very smart to land or taxi on poorly-kept or closed down airbases, forcing real world decision-making on the virtual pilot in case of emergencies. Would be cool if FOD likelihood could be modeled into the sim based on type/ownership of airfield, as well as weather conditions, etc..
  3. I am speechless. You guys go WAY beyond even ED themselves. You are setting the bar for others to follow, and you are making me fall in love with your product before it's even released. Just incredible work.
  4. So what is the velocity-to-air density ratio for the slowest reentry possible?
  5. Why disintegration though? The drag is equal to drag coefficient*air density*velocity squared*surface area. If air density is sufficiently low, air drag should be proportionally low, depending on the other factors.
  6. If that was true, that the blades have the same angle at the retreating and advancing side, the helicopter would produce 2-3 times the lift on the advancing side at around 100 kn if the blades spin at around 400 kn tip speed. Not good for level flight. What happens is that the blades starts producing more lift than it would be at a hover, as soon as it passes the 6 o'clock position on the rotor disk. This happens due to the increased velocity of the relative wind. Now an increase in lift makes the blade want to go up, and since helicoper blades can flap, the blade flaps up. This upward motion causes the relative wind to come from higher up, thereby reducing the AoA, and therefore also lift. The opposite happens at the retreating side. The higher the speed, the more the blades will flap to compensate. If this were not true, helicopters would not be able to accellerate out of a hover. And they would not be able to hover over a point on the ground in windy conditions. What i just explained is disymmetry of lift. The aerodynamic hazard called retreating blade stall occurs when the forward speed of the helicopter is so great that the retreating blade has to flap so much that the AoA to the realtive wind exceed its critical angle of attack, and stalls, eliminating lift and dramatically increasing drag for the affected section of the rotordisk.
  7. Why woud you add the gust speed to the normal wind speed? I can not read spanish, but the way I see it, your 10 knots on he 75 line is well within the green, and the gust speed is right on the limit between yellow (precautionary?) and red.
  8. Udat

    No VRS?

    Try to descend with 500 feet per minute, 0 airspeed and pull collective until you are using full power. If that doesn't do it, there is something wrong..
  9. You can also download the maneuver manual from Robinson helicopters website for free. It includes pictures; helps you visualise!
  10. Pretty much everyone considers 15° @ sea level standard. ISA = International Standard Atmosphere Temperature: 15°C @ sea level Pressure: 1013.25 hpa @ sea level Lapse rate: 1.98°C/1000feet :book:
  11. Here is an old NASA article on Coaxial rotor systems: https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19970015550.pdf
  12. I deserve it because it will allow me to teach my wife and son how to fly helicopters!!
  13. The entire nordic region with Murmansk, Iceland Norway, Sweden. Finland and the baltic would be the dream map. We could reenact much of red storm rising!
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