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MOONSTRUCK
nitrocharged
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Y F 100 SUPER SABRE
| Y F 100 SUPER SABRE |
| Description: |
"One particularly recalcitrant model is Mike’s Skyleada YF-100 (right). Now I really like this one, and it’s on my ‘to do’ list, but, built as the plan, it appears to be all but unflyable, flopping about, says Mike, “like a freshly landed fish”. I wondered if it suffered from the ‘inertia coupling’ of the full-size prototype, (cured by increasing the fin area and extending the wing tips), but Steve Bage believes the situation is worse than this. He writes: “The motor is too far forward, leading to big trim change between the initial launch and ‘re-launch’; it needs to move back to straddle the CG and any nose-up pitch is then dealt with by downthrust. Secondly, the way the model pitches up into a deep stall then sinks to earth, or flips over backward, is without doubt due to tip stalling. Swept wings tend to do most of their lifting at the tips and are especially prone to this phenomenon. Since the tips are aft of the CG, when they do stall, a nose-up pitch results. This was a serious problem on the full size F-86 and YF-100, so the behaviour of Mike’s model, the so-called ‘Sabre Dance’, is actually authentic! The simplest fix would be to build in a stack of washout, maybe 4 or 5 degrees. I’m pretty confident that these modifications the model would fly in a much more predictable manner.” |
| Keywords: |
f100 super sabre jetex 50 skyleada |
| Date: |
19.02.2021 07:26 |
| Hits: |
2508 |
| Downloads: |
9 |
| Rating: |
0.00 (0 Vote(s)) |
| File size: |
38.5 KB |
| Added by: |
nitrocharged |
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