A helicopter will achieve its best climb rate at a moderate forward speed. Climbing in a spiral helps to have forward speed in what is essentially a vertical climb. … If the helicopter adds forward speed, it can achieve a higher mass flow through the rotor, and now less acceleration is needed to achieve the same lift.
What does climbing mean in helicopter?
When in straight-and-level flight, any increase in the collective, while holding airspeed constant, causes the helicopter to climb. … If the nose of the helicopter rises above the level-flight attitude, apply forward pressure to the cyclic to bring the nose down.
Can a helicopter stall in a climb?
In a helicopter, aft cyclic (“pitching up” in an airplane) will only serve to make the helicopter climb and slow down until it reaches equilibrium in the new attitude. This doesn’t happen under normal circumstances, but there are four factors which contribute to retreating blade stall: fast — close to Vne.
Why do helicopters hover in one spot?
In fact, the rotor blades of the helicopter are really moving wings. The difference is that the whole airplane has to move forward in order to get lift, whereas the helicopter needs the propeller to fly in the air. This is what enables a helicopter to go straight up or down or hover over one spot.
Why should you not touch a hovering helicopter?
Helicopter rotor blades can generate static electricity. In moist air conditions, electricity can build up. This will be discharged when the helicopter earths or attachments come into contact with the ground. This is not a hazard to those on the helicopter, unless a passenger steps down from a hovering helicopter.
What do helicopter pilots say when taking off?
Departure phrases you’re likely to hear:
“Radar Contact” (I see you on my radar, I’ll keep an eye on you) “Climb and maintain one two thousand” (climb up to and level off at 12,000 feet) “Cleared direct to Ft. Wayne” (fly direct to a specific navigation fix or airport)
How do helicopters go forward?
Only the main rotor is used to move the helicopter up and down, and to make the helicopter tilt forward, backward, left, or right. … By tilting a blade to increase the blade’s angle of attack, the pilot can increase the force of lift that is pushing up on that blade.
What happens when a helicopter flies too high?
What Happens If a Helicopter Flies Too High? As the helicopter ascends, the air begins to thin. With thinner air, the main rotor becomes less efficient. The higher the helicopter flies, the slower it ascends due to the reduced power generated by the rotor.
What causes a helicopter to stall?
As the helicopter flies forward and the blades are rotating, the advancing blade is striking the relative wind at a higher speed than the retreating blade. … Any faster and the retreating blade will stall.
What happens if a helicopter stalls?
Once the engine fails or otherwise is shut off, the pilot must immediately lower the pitch, reducing lift and drag, and the helicopter will begin to descend. … However, this isn’t typical because as soon as the freewheeling unit disengages the engine, the pilot is trained to respond appropriately immediately.
Can police helicopters see inside your house?
Police Helicopters can see into your home only when looking through a window with the HD color camera. The infrared camera is unable to look through walls, roofs, or structures because it only detects heat given off by an object. It can see if a house, room, or roof is hotter than its surroundings.
How long can a helicopter hover in the same spot?
Most helicopters hover within “ground effect”. This is defined as a height above ground equivalent to the rotor diameter, that is, if the span of the tip of one rotor to the other is 100 feet, then the helicopter is capable of hovering in ground effect up to 100 feet.
How hard is flying a helicopter?
Yes, helicopters are difficult to fly. BUT it’s really only difficult at first. After learning and practicing the maneuvers and with experience, flying helicopters becomes like riding a bike, manageable and instinctive. At first, flying a helicopter can take some getting used to.
Can helicopters fly in rain?
Helicopters can fly just fine in the rain, and in conditions way worse than prevailed in Paris on November 10. First, about helicopters and weather. … There is nothing special about the rain-worthiness of the helicopter any president normally uses. In principle, any helicopter can fly in clouds or rain.
What causes a helicopter to spin and crash?
Tail rotor stops spinning. … So the siezed up transmission and the fuselage attached to it spins along with the main rotor- Results in a quick and uncontrolled descent and a hard contact with the landing surface. Pilot/foot pedal quits – Uncontrolled counter torque leads to helicopter spinning and crashing.
How did the helicopter crash Kobe?
The Sikorsky S-76B helicopter was flying at about 184 mph (296 kph) and descending at a rate of more than 4,000 feet (1,219 meters) per minute when it slammed into the hillside and ignited, scattering debris over an area the size of a football field. The victims died immediately.