Does anyone expect my mention of 'How about watching your AOAs! to avoid stall-departures (and subsequent) spins. ??
Terrence " Several challenges face the new Lancair pilot. Please approach aerobatics very carefully. My Lancair 4P has a much higher wing loading, intended for cruise performance. You will notice the Pitts and most aircraft designed for aerobatics have very low wing loading, often with two sets of wings. I believe spatial disorientation is often a factor when these planes 'depart' controlled flight. Rotations and accelerations can be violent, depending on the airframe and builder technique. This is usually only a problem, in VMC, in military performance airplanes, so there is less training and experience, in the certified civil fleet. When the pilot is so disoriented, that they cannot even see instruments or horizon, it's not that they freeze up, but they just can't figure out what happened or what recovery action to take. We called this type III Spatial
Disorientation(SD). Type I is prior to recognition, and type II is after the pilot recognizes his disorientation. In addition, being untested in spin modes, the departure may become an unrecoverable stabilized spin, after a short period. Sometimes recovery is only available by immediate action, which may elude the most experienced pilot, if they are surprised by the departure. All this is aggravated by the accelerated stall with high G loading. I think the two main killers of over 150 souls in the Lancair experience are thunderstorms and low altitude stall-departure-spin scenarios, often with related engine failures or "magic turn" attempts. Stay fast in the pattern, even if you have to make a couple of circuits at pattern altitude, to let the "low wing loaded" get on the runway. Keep a visual sep of 10-20 miles from the cumulonimbi. The thunderstorm scenarios are SD departures with Ice and extreme turbulence and hail included. Join us at
the LOBO meetings and training. Especially, talk to a LOBO or HPAT instructor about aerobatics first. Bill Miller
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