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    very stupid question

    ...the lift or to keep the rudders effective. On a golf ball the purpose is to reduce the area of low pressure in the ball's wake (F_drag = delta_p * A). 'A' is smaller the later the boundary layer separates from the golf ball's surface. Similar approaches for similar problem: - boat tails...
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    Velocity vs. Accuracy - Sound Barrier

    ...increases again at even higher altitudes. (see table in Wikipedia link!) Nevertheless, read the link you provided. There is no p in c=sqrt(kappa*R*T) and neither kappa nor R nor T depend on p. Only because the temperature usually drops with increasing altitude. But then you could also...
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    Velocity vs. Accuracy - Sound Barrier

    ...sound. Wind resistance (aerodynamical drag) has nothing to do with the s.o.s. No, that's exactly what I was saying! There is no p in c=sqrt(kappa*R*T) No, only the temperature, kappa and R matter. The chart shows the speed of sound for different temperatures. It will be 1004 ftps at -40°F...
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    Velocity vs. Accuracy - Sound Barrier

    ...gas constant divided by the (average) molar mass of the gas - T, the temperature in Kelvin The speed of sound is calculated as: c=sqrt(kappa*R*T) For air (mainly a two-atomic gas) kappa is 7/5 and R is 287.1 J/kg/K. And with a few conversions from Fahrenheit to Celsius to Kelvin...
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    German SPD pulling an Al Gore?

    The good thing about our new elections is that the Free Democrats (~Libertarians) scored almost 10% of the votes. :)
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    Ultimate Bug out vehicle?

    How about a Landrover Defender 110 station wagon or crew cab? Oops, I forgot, it's not available in the US.
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    What kind of defensive ammo do you use?

    Federal EFMJs in 9x19. They are a leftover from the time when JHPs were still banned here in Germany. Currently I do not plan to replace them with hollow points of any kind.
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    Are we at a tactical disadavantage without full auto?

    Full-auto is for belt-feds on bipods. I was ordered to shoot G3s on F/A only twice during my time in the army and the reserve. In neither case I wanted to, because I considered fast, single shots to be more effective than two or three rounds bursts. The only sitution in which F/A in an...
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    Is your EDC knife a weapon or tool?

    A weapon or a tool? That depends on who's asking. :D
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    What would you leave loaded in your .308?

    If I could find some, German steel-jacketed FMJ surplus. All the tumbling and fragmentation you know from the 5.56 at 2.5 times the size. :D
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    Safety lever position - Up or Down?

    Well, that is exactly WHY I only have a Glock. ;) Ok, if the gun has to have a safety lever I prefer frame-mounted (1911, HK) to slide-mounted (S&W, Beretta), and down-to-fire to up-to-fire. It's just the most ergonomic option.
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    Swiss do not want EU gun control

    *Sigh* Hunters! Are all of them the same all over the world? :banghead: a) Germany is a part of "Schengen". b) Hollow point pistol ammo is NOT, repeat NOT, illegal in Germany. In fact it became legal on April 1st, 2003. c) HP pistol ammo is already illegal in Switzerland due to Swiss laws.
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    Best weight 223 bullet?

    From what I read above I take that the 69gr Sierra MK HPBT is more than acceptable for defensive use (overpenetration maybe put aside). So my instinctive choice wasn't that bad (PMC with 69gr SMK). ;) How about the 55gr large hollow point GameKing bullets?
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    Rules of Gunfighting

    I thought the rules were the same as for a successful dogfight: - Be unpredictable! - Use as many dirty tricks as possible! - Use your common sense! - WIN!
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    Which one is the American Handgun?

    I say 1911A1, and so does my brother.
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    Interchangeable calibers?

    The metric dimension of the .30-06 is 7.62x63mm, while the Mauser in question is 8x57mm. The case of the .30-06 is too long for the Mauser's chamber.
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    (UK) Ban All Guns

    Considering the number of children killed by drunk drivers, why isn't there a much louder outcry to ban alcohol and cars before anything else? Because much more people drink alcohol or drive cars. Nobody wants to ban something they use/enjoy themselves.
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    Top Military/Armies of history

    I was commenting on the objectivity of the Americans vs the attitude of my fellow Germans. ;)
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    Top Military/Armies of history

    It amazes me what Americans think about the German Wehrmacht. If I, as a German, would make similar claims among Germans, they'd call me a neo-nazi or revisionist.
  20. T

    Top Military/Armies of history

    How about the Swiss Army? They haven't lost a war since...uuh...when?
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