Tag Archives: rotor

Cars

Disc Brakes Vs Drum Brakes: What’s The Difference?

Disc brakes take their identify from the big rotor present in disc brake methods. This brake rotor, together with particular brake pads and calipers, is used to create the friction that stops your automobile. When you press the brake pedal, your automobile’s hydraulic brake fluid turns into pressurized. That pressurized fluid then travels all through a community of hoses and fluid strains to succeed in the automobile’s brake calipers. The calipers are constructed utilizing pistons and home brake pads fabricated from ceramic or metallic. When the pressurized fluid reaches the caliper, it causes the pistons to develop and pushes the brake pads into the rotor, producing the friction used to cease your automobile. That friction provides as much as steadily degrading efficiency — replacing worn-out brake pads and selecting the right kind of hydraulic fluid are each very important to the long-term wellbeing of your automobile.

Disc brake methods are extra advanced and supply extra braking energy than drum brakes. They started to see widespread use within the Seventies as automakers endeavored to extend stopping energy and automobile security. Today, many autos both use disc brakes on all 4 wheels or put discs on the entrance and drum brakes on the rear. Most of a automobile’s braking energy comes from the entrance finish, permitting entrance disc brakes to deal with the majority of the braking duties whereas the rear drums pull backup obligation. Rear brakes additionally operate because the emergency and parking brake.

News

New Porsche Taycan: 320kW charging, 422 miles and 939bhp

The new motor homes a reworked rotor and stator, which boosts energy density and cuts losses, whereas tweaks to the inverter software program give “more efficient control” of the ability supply, says Porsche.

Meanwhile, a Formula E-derived ‘push to pass’ operate, included within the Sport Chrono choices pack, can add as much as 94bhp for 10 seconds at a time.

The top-rung Taycan Turbo S, with a full 939bhp at its disposal in its most potent setting, can now dash from 0-62mph in simply 2.4sec – 0.4sec faster than the pre-facelift automotive – which makes it one of many fastest-accelerating vehicles you should purchase within the UK immediately.

The single-motor 429bhp Taycan, in the meantime, shaves 0.6sec off its dash time to 4.8sec.

Range and charging

However, the majority of the funding on this replace has gone in direction of making the Taycan – which was already one of many longest-range and quickest-charging EVs on sale – extra environment friendly.

As a consequence, it could actually now cowl as much as 35% extra miles between costs, in response to Porsche. The longest vary – 422 miles on the WLTP mixed cycle – is claimed by the rear-driven, single-motor Taycan outfitted with the non-obligatory Performance Battery Plus, which at 105kWh is a chunky 12kWh larger than earlier than.

Comprising 396 particular person pouch cells organized into 33 modules, this new battery makes use of a unique chemistry that reinforces power density and reduces inside resistance, which implies the charging pace could be elevated too.

As effectively as reclaiming its place among the many UK’s longest-range electrical vehicles, which means that the Taycan is as soon as once more formally the fastest-charging EV on sale, as a result of it could actually now high up at speeds of 320kW – 50kW faster than earlier than – at appropriate chargers.

Technology

The Misconception About Helicopter Crashes You Shouldn’t Believe

A helicopter stays in the air by using its engine to power the top rotor blades, which generate lift. The blades pull air from above the helicopter and force it downward, creating upward momentum in the air. They can also produce forward motion.

To maintain stability and control in any direction, helicopters have a rear rotor blade that acts as a counterbalance. Without it, the helicopter would spin uncontrollably. Even if the main engine is turned off during flight, the rotor blades above the pilot’s head will still spin.

Instead of pulling air down, the rotor assembly would suck air up as the helicopter descends, causing the blades to spin. This is called “autorotation.” The rotors speed up enough to allow the helicopter to safely glide down to the ground, similar to a skydiver’s parachute.

Skilled pilots can maintain control of the helicopter, even if the engine fails. It’s important to note that while the engine produces torque, autorotation caused by air movement does not. This means pilots don’t have to worry about counteracting any spinning tendencies while landing safely.