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Red Arrows Gnats

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Red Arrows Gnats

Old 7th Mar 2021, 12:02
  #21 (permalink)  
 
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The CB to restrict the roll rate was there for a purpose. Excessive roll rate can cause what is called "roll/yaw diversion". This will happen at high speed at low level (lots of air for the ailerons to work on!) Effectively the aircraft starts tumbling. Of course at high speed the aircraft will break up. This happened in front of the CinC when he was watching the years approval of the that year's display pilot (no names, no pack drill). The arrows pulled their C/Bs and got away with it. I suspect because they never flew at warp factor nine when thay were rolling. I was involved with the aftermath.
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Old 7th Mar 2021, 19:50
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Divergence (not Diversion)
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Old 7th Mar 2021, 21:23
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The pocket rocket

Roll-yaw coupling was the recognized term
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Old 8th Mar 2021, 08:42
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Roll/Yaw

I'm no TP but I remember alpha being significant. Grey matter excused, the limits on a 'twinkle' were 300-350 kts, S & L, 360 deg only.
The break up referred to earlier to DL was I believe during a vertical roll after a 6g pull up.
Lifts a gift
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Old 8th Mar 2021, 09:42
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I imagine it must have been a little uncomfortable physiologically rotating about an axis so quickly?
Aside from the eyeballs comment - during a twinkle roll was there any sense of red-out?
Trying to imagine the vectors - surely even with a g-suit, a little blood would travel headwards...?
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Old 8th Mar 2021, 09:43
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Watched the John Noakes Red Arrows video, does a C130 still accompany the Reds around the UK?
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Old 8th Mar 2021, 12:03
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Originally Posted by BEagle
Fuse 13. An electrical circuit limited aileron deflexion at higher speeds; with fuse 13 removed full aileron was available which increased the roll rate significantly - although it was more than sufficient with the fuse intact!
Yup that was it, they just pulled the fuse LOL

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Old 8th Mar 2021, 14:49
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Tartar, No ‘G’ involved. (it was all over very quickly) Just had to brief pax to brace or helmets would thump the canopy. On reflection I think that the min speed may have been 350? long time ago
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Old 8th Mar 2021, 16:28
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Originally Posted by thrusts a must
Tartar, No ‘G’ involved. (it was all over very quickly) Just had to brief pax to brace or helmets would thump the canopy. On reflection I think that the min speed may have been 350? long time ago
thrusts a must
....it’s a long time ago but seem to recall a stiff neck due to forcing head back in anticipation was an occupational hazard!
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