Practicing stalls helps recognition and recovery techniques prevent spins. Spins kill. Stalls at low altitude, particularly in a turn quickly become a spin. Learn the stall at safe altitude and location, and avoid everywhere else.
A stall occurs when the angle of attack of an aerofoil exceeds the value which creates maximum lift as a consequence of airflow across it. This angle varies very little in response to the cross section of the (clean) aerofoil and is typically around 15°.
A stall occurs when a wing exceeds the critical angle of attack. The critical angle of attack is the AOA at which the wing generates the most lift it possibly can. It cannot generate any more lift. Any attempt to increase the angle of attack past this point results in a reduction of lift and a large increase in drag.
Eventually, the stalling (or critical) angle of attack is reached, and the inability of the air to flow smoothly over the top surface of the wing results in a decrease in lift and a large increase in drag.
Many students fear practicing stalls because it can result in seemingly unpredictable wing drops, making the maneuver feel uncontrolled and dangerous. There is a simple explanation for this. Wing drops occur when the airplane's wings do not have the same angle of attack, typically due to uncoordinated flight.
There are very few mishaps when practicing stalls. In fact, an AOPA Air Safety Institute analysis of all stall and spin accidents over a 15-year period found only four that could be directly attributed to intentional stall practice. But unintentional stalls—the thing we're training to avoid—those are shockingly common.
Stay Calm. First and foremost, keep your composure. While the instinctive embarrassment might be overwhelming, remember, every driver has experienced a stall at some point. Those honking or showing signs of impatience have likely been in your shoes.
There's a myth that you'll automatically fail if you stall the car during your driving test. It's not true. It all depends on the situation and how often you stall. If it just happens once and you keep under control, you will not automatically fail.
Some horses get very aggressive or defensive when they're in stalls. They think it's their stall. You're going to tell your horse, “No, it's my stall. I just happen to let you live here for free.” A lot of horses think that because it's their stall, it's their protected area, and they can keep you out of it.
Keeps the Line Moving: Having a gap at the base of a partition allows people waiting in line to see if a stall is occupied or vacant. This visibility keeps the line moving and prevents wait times from being any longer than they have to be.
Standing around all day in an individual stall can have repercussions. According to a University of Nottingham study about the effects on horses kept in stalls versus pastures, restrictions on a horse's ability to move around at will can make it more prone to gastric ulcer syndrome and colic.
Many horse owners prefer to stall their horses to protect them from inclement weather or prevent the horse's hair coat from bleaching out. Stalled horses are able to eat without other horses interfering, which is especially important for young, timid or geriatric horses.
A stall is what happens when an aerofoil can not make enough lift to keep the aircraft in flight. Stalling can be risky and dangerous when caused unintentionally or with lack of enough vertical distance for recovery. Airflow separating from an airfoil at a high angle of attack, as occurs at a stall.
Manual cars stall when taking off because the drivers releases the clutch too fast (dumping the clutch) and the engine cannot meet the demand and stalls. Stalling the engine in a manual car is NOT bad for the vehicle, so long as it's not done 8 or 10 times every day.
Don't rely on revving the engine extra hard when setting off as a way to prevent stalling. While you might find that it works (as long as you don't raise the clutch too quickly) it isn't great driving practice. Overdoing the gas pedal wastes fuel and there's a risk that you will lurch forward too quickly.
There's a reason why your car rolls backward when you try to drive it up the hill from a stop. It happens when you release the handbrake before finding the bite point. Many people wrongly assume that the gas pedal is the only component that moves a vehicle up the hill.
The probability of achieving the stall speed inadvertently, a potentially hazardous event, had been calculated, in 1965, at about once in every 100,000 flights, often enough to justify the cost of development of warning devices, such as stick shakers, and devices to automatically provide an adequate nose-down pitch, ...
The recovery from a stall is quite straightforward. All a pilot must do is push the nose down and roll the wings level if the aircraft is in a bank. This action reduces the angle of attack and reattaches the airflow over the wing.
Reducing the angle of attack is the only way to "fix" the stall, but that doesn't mean you should be losing hundreds or even thousands of feet! Methodically release back-pressure, and allow the airplane to gain energy before initiating a climb.
It's nothing special; you feel weightless for a couple seconds as the nose dips down. Basically you just lose airspeed to the point where the plane can't maintain its elevation and the nose tips over and you regain your airspeed again.
The most likely reason that a car jerks when accelerating from stop is a problem with the clutch. It could be due to worn-out friction material or a pressure plate defect (or combination of both).
What To Do When a Manual Transmission Stalls While You're Moving. This is unusual. Usually a stall will happen while stopping at or starting from an intersection or while climbing a steep hill. However, you could also stall when you upshift too soon or don't downshift soon enough while slowing.
