Are silent helicopters real?

Well there actually are stealth

stealth

Stealth aircraft are designed to avoid detection using a variety of technologies that reduce reflection/emission of radar, infrared, visible light, radio frequency (RF) spectrum, and audio, collectively known as stealth technology.

https://en.wikipedia.org › wiki › Stealth_aircraft

Stealth aircraft - Wikipedia

helicopters, from Boeing Sikorsky's RAH-66 Comanche, to a classified low observable derivative of the UH-60 Blackhawk, which was used in operation Geronimo to kill Osama bin Laden. They're out there but haven't seen the light of day for several reasons.

Can there be a silent helicopter?

Stealth helicopters are helicopters that incorporate stealth technology to avoid detection. In recent years, designs for blades have emerged that can significantly reduce noise, which is a major issue for clandestine use of helicopters.

Are any helicopters quiet inside?

While the S-76D helicopter is quiet inside, your neighbors will also appreciate that it's quieter outside as well.

Is there such a thing as a stealth helicopter?

The first RAH-66 prototype with stealth technology. The Light Helicopter Experimental program is the brainchild of the U.S. Army. It charged Boeing-Sikorsky with developing armed reconnaissance and attack helicopters. The result incorporated stealth technologies that minimized radar and human detection.

What is the world's quietest helicopter?

But, thanks to its many unusual modifications, the 500P still holds the title that Hughes gave it in April 1971: "the world's quietest helicopter."

Can We Really Have Stealth Helicopters When They’re So Loud?

How do they silence helicopters?

It's the rotors that make the classic "whup-whup" sound. The simplest way to dampen a helicopter's noise is to increase the angle of the rotor's blades, also called the pitch, and slow them down. But there is a trade-off: raising the blades' pitch eventually causes a stall and decreases the lifting power.

Are all helicopters loud inside?

In the majority of today's commercial aircraft the level of cabin noise is generally lower than 80 dBA. However, in most helicopters the levels could be considerably higher, reaching the values beyond 100 dBA in some older production models and higher power settings. The cabin noise vs.

Is there a helicopter that can cross the ocean?

The AW101 helicopter successfully completed an epic journey across the North Atlantic to return to the UK across mountains, high seas, storm clouds, ice, and snow.

How quiet is a stealth chopper?

By changing the shape of the rotor blades, Eurocopter manages to pair down the blade-vortex interaction so thoroughly that the sound only reaches the whisper volume of 3 or 4 decibels.

Why can't fire helicopters fly at night?

Too often, aerial firefighting must be suspended after sunset due to poor visibility that could lead to a collision with other aircraft or terrain. That spells a lost opportunity, because the lighter winds and lower temperatures common at night are better for dousing flames and cordoning off fires with retardant.

Can a helicopter break the speed of sound?

One thing that they just cannot do is fly really fast. Even the speediest helicopters move comparatively slowly compared to their fixed-wing equivalents, and there is no helicopter equivalent to the airliner crossing continents at speeds approaching Mach 1 – the speed of sound.

Why can't you walk behind a helicopter?

Most helicopters have tail rotors located in the back of the helicopter. The tail rotor spins very fast, is often difficult to see while spinning, and is extremely dangerous. To ensure safety around helicopters, never walk towards the rear of the helicopter.

Is the Apache stealth?

as the Cobra, but anyway), thus reducing its radar cross section (RCS). So, from head-on, or directly behind, the Apache is reasonably stealth.

Can a helicopter fly nose down?

Moving the collective up requires a slight aft movement of the cyclic to direct all of the increased power into lift and maintain the airspeed. Remember, a helicopter can climb with the nose down and descend with the nose up.

Why flights don t fly over Pacific Ocean?

The Pacific Ocean is a massive body of water that will require an extremely large amount of fuel to fly across. Rather than flying directly across the Pacific Ocean, most commercial flights take curved routes because they are actually shorter than shooting straight across a distance.

Why do planes do not fly over the Pacific?

Most flights are intended to spend as little time as possible over water, since storms are more common over the ocean than on land. An aircraft would not be safe to fly over the Pacific Ocean due to the stormy weather and frequent lightning strikes that occur there.

Why do planes not fly straight across the Atlantic?

A: The tracks across the Atlantic are determined daily to take into account the meteorological conditions of the moment. If there are strong winds, the eastbound tracks will be farther north to take advantage of them, while the westbound flights will be routed south to avoid the headwinds.

What is safer than a helicopter?

Statistics show that business jets are involved in fewer accidents than helicopters, but the risks are far greater if the worst should happen due to the height, speed and number of passengers.

Has a helicopter ever shot down a fighter?

Yes, it has happened a number of times, although I have not seen good records of the occurrences. Perhaps the best occurrence that I can recall is that an Israeli tank shot down a Lebanese helicopter in the 80's.

What is the least safe helicopter?

Why do people wear headphones in helicopters?

There are two main reasons why pilots wear headsets in the cockpit; to prevent hearing loss and for easier communication with Air Traffic Control (ATC).

Why do helicopter pilots wear helmets?

A helmet is a key barrier to enable a pilot to keep flying the helicopter in the event of birdstrike. They also contribute greatly to reducing head injuries in the event of an accident. As an operator, you should consider the potential risk of birdstrike in your operation and use helmets as a key preventative barrier.

Can police helicopters see inside your house?

It can see if a house, room, or roof is hotter than its surroundings. The privacy of your home is well respected by law enforcement when operating in a helicopter but if there is reason to suspect criminal activities are being conducted from a home they may be given permission to use the camera to try and see inside.