Sentences with word «upstroke»

Tobalske discovered that the bird generates vortices on upstrokes that produce lift.

The upstroke of each wing beat produces a 1.3 - kilohertz low note, and the downstroke produces a 2.9 - kilohertz high note.

The «Batbot» replicates the way a bat changes the profile of its wing between the downstroke and upstroke.

Archaeopteryx doesn't have several features considered essential to flight in modern birds, such as a keeled breastbone to which several important flight muscles attach; a ball - and - socket arrangement that allows the wing to flap fully up over the back and down again; and a muscle pulley system that links chest and shoulder muscles, allowing the birds to swiftly alternate between powerful downstrokes and upstrokes.

Situated between the «shoulder» and «elbow» of the robot, these wires rotate the elbow, pulling in the «fingers» to slim the wing profile on the upstroke (Bioinspiration and Biomimetics, DOI: 10.1088 / 1748-3182/7 / 3 / 036006).

On the upstroke, however, that large area would create drag, so the bat folds the wing inwards.

At the end of each downstroke and upstroke — as it enters the turns of the figure eight — an insect wing rotates, shedding the leading - edge vortex.

Also, at moderate and high flight speeds, the circulation on the outer (hand) wing and the arm wing differed in sign during the upstroke, resulting in negative lift on the hand wing and positive lift on the arm wing.

It's not an upstroke, it's a down pulse.

Obviously, you do both sides [Non-Dominant Side Training], but what you're going to feel on that is the upstroke when the foot is hitting the ground.

And when you're clipped in to a bike's pedals, you're targeting your hamstrings and glutes more than you would while running — especially when you're pedaling up a hill or cycling with lots of resistance and pulling up harder on the upstroke.

Similarly, pull up from your knees and toes on the upstroke.

It's not an upstroke.

Stepping up the compression ratio in an engine, will increase the total heat produced when the gas is compressed on the upstroke.

Valve to piston contact occurs when the valve can not close quickly enough to get out of the way of the piston on an upstroke.

I'd be more worried about the coolant going the other way — the leak opens up, the piston sucks a bunch of water in on the intake cycle, then the engine hydrolocks on the upstroke.

As the upstroke happens the pressure in the cylinder is now low because the escaping exhaust gases cause a small pressure wave of escaping gas that now opens the reed value and draws in new fuel / air mixture.

Cylinder deactivation, for instance, could be made much more fuel efficient if the intake valve could be opened on every downstroke and the exhaust valve opened on every upstroke of the deactivated cylinder or «dead hole».

This is not as easy to reproduce with a dip pen due to it's overwhelming desire to splatter on the upstroke!

So has the Long Tail developed a whiplash on the upstroke?