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Peter Humphrey wrote: |
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> Of course! I missed the Spitfire, so I don't know how high it flew, but the |
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> Hurricane sound from no more than a couple of hundred feet or so was among the |
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> two or three most impressive of my life. Both planes have V12 Rolls-Royce |
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> Merlin engines (I think). As each cylinder fired, the sound pressure went up |
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> extremely fast at the start of the exhaust beat, suggesting huge exhaust |
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> valves, and the deep-throated roar was ... just ... beyond description. |
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> |
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> The only engine to come close was an extraordinary 1/3 scale model of a nine- |
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> cylinder radial aero-engine I saw years ago at a national model engineering |
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> exhibition. The crankshaft was anchored to the frame, and the entire engine |
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> and prop rotated around it. That's what you call air-cooling! Absolutely |
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> fantastic when he fired it up once an hour or so! |
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Yep. Some of those prop engines are very powerful, maybe not so |
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efficient tho. Anyway, they sure do make some noise even if the engine |
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is small. I don't think they have mufflers or if they do, it isn't much |
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of one. I also think they burn methanol or something too. I'm not sure |
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and it may even vary from one engine to another. I don't think they |
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burn plain old gas like cars. |
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>> I live about 4 or 5 miles from a air force base here. We have mostly |
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>> training type planes that fly over us but on occasion, we have something |
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>> really big here. We have even had the space shuttle land there a few times. |
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>> The B2 bombers have been there as well. |
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> Sounds like a good place to live! That's not Edwards, is it? I drove up to the |
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> gates once to see what they'd say. They were actually quite polite. |
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I'm close to Columbus Air Force base in Mississippi. It has a huge |
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runway. It is one reason the space shuttle lands here. It takes a long |
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runway to land and take off when carrying that thing. I say space |
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shuttle, it's mounted on the back of a 747 I think. What's more neat |
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tho is the big bombers. My Dad several decades ago was doing a contract |
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job at the base. For some reason they had the really big bombers out |
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there with armed military guards everywhere. They wouldn't let anyone |
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even near those things. He could see them real good tho. He said "it |
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looked like death, just plain death". Later on my Dad found out it was |
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loaded up with bombs that they were moving somewhere else. Death was |
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more accurate than he thought. |
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> |
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>> I have heard some of the large planes when they start their engines and |
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>> like I said, I'm several miles away and it is loud. Video just can't |
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>> give you that even with a good sub-woofer. |
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> Even that wouldn't help much, I think. You'd need something that can handle an |
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> extremely rapid wave-front and high volumes. As you said - you had to be |
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> there. |
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Yep, speakers can only do so much. |
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> |
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>> Thanks for the link. |
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> My pleasure. I don't know when we'll get the Hurricane one - the man with the |
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> camera just put a two-word entry on Twitter this morning: "Hashtag HEADACHE" |
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> |
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Oooops. |
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Dale |
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:-) :-) |