Re: Snowbird crash May 17, 2020
Posted: Mon May 18, 2020 3:44 pm
People think I'm pretty much the stupidest person in Canada to ever strap on an airplane, but ...
He didn't have his entry gate for the dumbbell maneuver.
See, if he was over the runway at the surface at 500 knots and pulled the throttle to idle, he
could have exchanged his massive kinetic energy to potential energy and done the turn back.
Height = Velocity squared / 2G
But he was probably closer to 150 knots with negligible height when the RPM died.
I know I'm really stupid, but he simply didn't have the energy to perform the maneuver, and
that was known from the start. He's an airshow pilot. He knows what a top gate is, and what
an entry gate is. This fundamental knowledge keeps us alive.
What was his entry gate for the dumbbell? 350 knots? 300 knots? Without it, he's ejecting,
because the physics says he can't complete the maneuver.
Top gate. Entry gate. Math & physics.
I know, I'm really stupid. How many years have I been ranting about gates for aerobatic
maneuvers at low altitude?
Fun Fact: If you are at 1000 mph at the surface at the Primose Lake Range, and the throttle
goes to idle, you can glide up to 30,000 feet and do an approach and landing to Cold Lake
without touching the throttle again.
Ask any TC Inspector to demonstrate it to you. They're the hottest sticks in Canada, I am told.
Here's a simple one for you. Driving down the runway at the surface at 120 mph, I would never
dream of pulling for an inside loop, because I don't have the energy to attain my top gate - ask
Marcus Paine about that. My entry gate for an inside loop is 160 mph at the surface at sea level,
I like 180 mph.
Pop Quiz: Let's say I ignore my entry gate and pull for an inside loop at 120 mph from the
surface. I will be dangerously low and will not make my top gate for the inside loop. What
must be done at that point, in order to survive?
Entry gate, Top gate. I know when I left Canada the average IQ rose significantly, but there
isn't much new there, is there?
He didn't have his entry gate for the dumbbell maneuver.
See, if he was over the runway at the surface at 500 knots and pulled the throttle to idle, he
could have exchanged his massive kinetic energy to potential energy and done the turn back.
Height = Velocity squared / 2G
But he was probably closer to 150 knots with negligible height when the RPM died.
I know I'm really stupid, but he simply didn't have the energy to perform the maneuver, and
that was known from the start. He's an airshow pilot. He knows what a top gate is, and what
an entry gate is. This fundamental knowledge keeps us alive.
What was his entry gate for the dumbbell? 350 knots? 300 knots? Without it, he's ejecting,
because the physics says he can't complete the maneuver.
Top gate. Entry gate. Math & physics.
I know, I'm really stupid. How many years have I been ranting about gates for aerobatic
maneuvers at low altitude?
Fun Fact: If you are at 1000 mph at the surface at the Primose Lake Range, and the throttle
goes to idle, you can glide up to 30,000 feet and do an approach and landing to Cold Lake
without touching the throttle again.
Ask any TC Inspector to demonstrate it to you. They're the hottest sticks in Canada, I am told.
Here's a simple one for you. Driving down the runway at the surface at 120 mph, I would never
dream of pulling for an inside loop, because I don't have the energy to attain my top gate - ask
Marcus Paine about that. My entry gate for an inside loop is 160 mph at the surface at sea level,
I like 180 mph.
Pop Quiz: Let's say I ignore my entry gate and pull for an inside loop at 120 mph from the
surface. I will be dangerously low and will not make my top gate for the inside loop. What
must be done at that point, in order to survive?
Entry gate, Top gate. I know when I left Canada the average IQ rose significantly, but there
isn't much new there, is there?