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#11
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#12
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one of the first jet bombers built in France, called
Vautour, that was glued instead of riveted, don't know if there were other ones. B-58 "Hustler" Tony V. |
#13
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Riveted or stuck, I guess, because you can't easily weld alloy sheet. It
would appear that now you can; I came across a reference to a biz-jet, the Eclipse 500, that's built by something called friction stir welding. (google 'friction stir welded airframe' or 'Eclipse 500'). So I suppose in principle you could now build an accurate alloy profile with a completely smooth surface. Probably big-bucks for capital equipment and tooling so I doubt if anyone will try building a glider with it, though. And it would still take just the one hard push in ground handling - small dent - and there goes your accurate profile. Graham "Tony Verhulst" wrote in message ... one of the first jet bombers built in France, called Vautour, that was glued instead of riveted, don't know if there were other ones. B-58 "Hustler" Tony V. |
#14
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| Is it possible to make a retract gear metal glider with
| flush rivets and a carry-through spar which would give | 40:1 ratio, or is metal just a substance that won't | allow the shapes or fine tolerances needed to make such | a wing? | From talking to some other pilots, there seem to be other disadvantages too: metal wings don't flex well so rivets will pop on long wings with high load, constructing long thin wings is much more challenging using metal, construction time and creating the optimal wing shape or more difficult with metal. I think I brought this up because I've liked the 1-26 for it's short wings (for landing out) and lack of struts and the fact we can leave it out in the weather. Of course it's glide ratio and high speed glide are poor, compared to modern ships. For me, because I weigh 150#, long heavy wings are not so interesting. A Pegasus or PW-5 is really nice, but the high speed polar could use some improvement (flaps?) and even easier assembly would be cool. The APIS FAI may be just the ticket for this. Very light (so I imagine the wings are light for assembly), short wingspan, and ailerflaps (flaplerlons?) are a great start. I just wonder what the 80knot sink is with that draggy wheel sticking out the bottom like the PW-5, and at the lower weight with a 150# pilot...I haven't yet found an APIS polar anywhere... |
#15
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In article ,
Martin Gregorie wrote: On 6 Nov 2003 11:02:44 -0700, (Mark James Boyd) wrote: Failing that, look for an ASW-19B or an ASW-20. Both allegedly fly similarly to the Pegase and the '20 certainly has better performance. I'm looking at present. Pegase 90 would be my first choice, but as I may need NZ type approval I've got my eye on a nice '19B - that and several models of the '20 are already type approved. I'm actually drooling over the Apis FAI. But between that and a tiny baby girl on the way...I'll have to save up my gaga noises... |
#16
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