What is a pitchpole in sailing?

What is a pitchpole in sailing?

A pitchpole occurs in the same circumstance as a broach. The boat careens down the face of a huge wave. But instead of turning broadside to, it buries its bow in the opposite wall of water in the trough. The boat then cartwheels, or pitchpoles, end over end.

What is a pitch pole moment?

Definition of pitchpole intransitive verb. : to turn end over end the catamaran pitchpoled. transitive verb.

What is the meaning of poll pitch?

Definition of pole pitch : the distance measured on the circumference of the armature from the center of one pole to the center of the next pole : 180 electrical degrees — compare coil, pitch sense 2b(5)

Is pitch a force?

In aerodynamics, the pitching moment on an airfoil is the moment (or torque) produced by the aerodynamic force on the airfoil if that aerodynamic force is considered to be applied, not at the center of pressure, but at the aerodynamic center of the airfoil.

How do you get a pole pitch?

Pole Pitch is equal to the total number of armature slots divided by the total number of poles in the machine. For example, if there are 96 slots on the armature periphery and 4 poles, the number of armature slots that come between two adjacent pole centers would be 96/4 = 24.

What is coil pitch and pole pitch?

Coil span or coil pitch is defined as the distance between the two sides of a coil. Pole pitch is defined as the angular distance between the central line of one pole to the central line of the next pole. A pole pitch is always 180° electrical regardless of the number of poles on the machine.

Why do planes pitch up when landing?

Flaps help to increase the lift at low speed, allowing the aircraft to fly at a lower than cruise speed speed. The pitch up is caused by the elevator on the rear wing.

Why do planes pitch up?

When a swept wing starts to stall, the outermost portions tend to stall first. Since these portions are behind the center of pressure, the overall lift force moves forward, pitching the nose of the aircraft upwards.

What is the difference between coil pitch and pole pitch?

What is lap winding?

Definition of lap winding : a drum winding for generator and motor armatures in which each coil or set of windings overlaps the next so that there are as many armature paths as there are field-magnet poles.

Can a catamaran cross the Atlantic?

‍Catamarans aren’t the most common ocean-crossing sailboats, but they’re surprisingly safe and capable offshore. Catamarans are safe for ocean crossings. In fact, catamarans are often much safer than similarly-sized monohulls offshore.

Which is better catamaran or trimaran?

Trimarans are therefore faster than catamarans and this difference is very significant when sailing into the wind thanks to the centering of the weight in the central hull which limits pitching. As a result, trimarans are generally more efficient than catamarans.