Here is a detailed post about the Helicopter Blade Speed Mph guide. So, if you have been searching for helicopter blade speed rpm or other keywords online, then this article is dedicated to you. It contains the helicopter speed record. Read on to enjoy all these and more.
Leading-edge erosion is a major cause of wind turbine blade wear. As the turbine rotor spins in the air, it hits dust, dirt, insects, hail, and more. That does not sound like much until you consider the blade tip could be spinning over 100 mph. Once the blade edge wears, water can invade, freeze, and eventually ruin the structure’s aerodynamics.
helicopter blade speed rpm
Helicopter Blade Speed Mph
To appreciate the speed of a blade, use these equations to figure tip speed and then other curious information regarding rotor dynamics
Speed, S, is simply a change in distance over a change in time. Miles per hour, or mph in North America, is the most common unit. The equation looks like this:
S = d/t
To find tip speed, we need the rotor diameter and rotational rate. So assume a rotor diameter of 100m and a rotation rate (ω) of 15 revolutions/min, rpm.
Distance in this case is the circumference C of the rotor’s circle, which is found with:
C = πD
Where D = diameter in meters, m
So our 100m rotor describes a circumference of:
C = π x 100m
= 314m, therefore
S = 314m x 15 rotation/minutehttp
= 4,710 m/min
A Google search says to convert m/min to mph, multiply by 0.0372 [mph / m/min].
Smph = 4,710 m/min x 0.0372h
= 175 mph.
That’s fairly fast. Many light planes cannot reach that speed. So a full equation for tip speed in mph with the rotor diameter in meters, m, because that is the most common unit to describe rotor diameters, would be
Smph = πDω x 0.0372 (1)
Now let’s ask: How far from the hub is the 100 mph mark?
The answer is in solving equation (1) for the diameter, D, and setting S = 100 mph, like this:
D = Smph /(π ω x 0.0372)
= 100 mph / (3.14 x 15 rev/min x 0.0372)
= 57m diameter mark
Or 28.5m measured from the hub center to a point on a blade. You can see that almost half the rotor is in a 100-mph” zone”. You can solve equation (1) for ω as well:
ω = Smph /(πD x 0.0372)
With this you can ask: What rotational speed on the 100m rotor is needed for a tip speed of 200 mph?
ω = 200 mph / (π 100m x 0.0372)
= 17.1 rpm. In high winds, that could happen.
helicopter speed record
Top 10 Luxury Helicopters in the World
Most people have heard of personal and charter jets, but luxury helicopters are the genuine gems. Not only are these aircraft comparatively less expensive, but helicopters can approach places that bulky jets can’t. Having a private or commercial helicopter is expedient, more environment friendly, and a symbol of status. Celebrities including Brad Pitt and Angelina Jolie and Donald Trump own a luxury helicopter, and this slot market has grown considerably in recent years due to demand from the rich.
They are well-appointed with all the newest technology, and interior seating marks that are designed in fine Italian leather upholstery.
Therefore the list of top 10 luxury helicopters is given below:
1. Augusta Westland AW119 Ke Koala:
The Koala is chiefly used by law enforcement, but it can easily provide accommodation to a group of corporate directors traveling on business. It has a VIP services quite adequately, with premium leather upholstery and seating for about 6 passengers and 2 operators. The Koala reaches a top speed of 166 mph (267 km/h) and a range of 618 miles (995 km). Price ranges from $1.8 to $3 million.
2. Eurocopter Hermès EC 135:
Though this brand of luxury helicopters is not suitable for long distant trips, is has a class apart built. The typical EC 135 will cost you a mere $4.2 million, but the one with the interior design from the best in class designer will cost you up to $6 million. The top speed is 178 mph, but the range is just 395 miles.
3. Augusta Westland AW109 Grand Versace VIP:
Augusta Westland teamed up with the Italian fashion house Versace to produce a super luxury interior for this fancier version of the AW109. The top speed is about 177 mph and a range of 599 miles. The mere difference is that all 599 of those miles will be more luxurious for the VIP passengers. Hence, will cost you $6.3 million price tag and the helicopter is fully covered in Versace leather, design and exterior.
4. Eurocopter Mercedes-Benz EC 145:
If you’re a Mercedes fan, now you can fly your preferred brand helicopter too. A regular EC 145 costs about $5.5 million, so the Mercedes version is going to cost anywhere around $7 million. But it’s totally worth it. No other Mercedes can go 153 mph while flying 17,000 feet above the ground. It has all the luxury of the famous German sports.
5. Eurocopter EC 175:
The EC 175 made its wonderful first appearance at the Paris Air Show in 2009. The chief feature of the EC 175 is that it can hold 16 passengers contentedly inside. The top speed reaches 178 mph (286 km/h), with a range of 345 miles (555 km). It costs whooping $7.9 million.
6. Eurocopter EC 155:
This is a luxurious chopper. Its top speed is an impressive 200 mph with a range of 533 miles. It can seat as many as 13 passengers; this spacious EC 155 aircraft will cost you $10 million.
7. Sikorsky S-76C:
The Sikorsky S-76C is more generally known as Black Hawk. The massive interior is large sufficient to fit up to a dozen passengers, but the seating occupies 4 passengers in Black Hawk model. It reaches a top speed of 178 mph (286 km/h) and has a range of 473 miles (761 km). It would cost you a $12.95 million.
8. Augusta Westland AW139:
The AW139 is appropriate for law enforcement, armed patrol and firefighters. It has a capacity to seat 8 passengers. The AW139 can reach an unbelievable top speed of 193 mph (310 km/h), with a range of 573 miles (922 km). It carries a beautiful interior costing you a hefty $14.5 million.
9. Bell 525 Relentless:
Like the Gulfstream 650 jet, the Bell 525 Relentless helicopter isn’t on the market currently. This chopper is going to cost $15 million. They predicted that the seating will be for 16, a top speed of 162 mph, and a range of 460 miles. This bright yellow Relentless with amazing seating will cost you a fortune.
10. Sikorsky S-92 VIP Configuration:
The S-92 can safely accommodate 9 passengers in its extensive interior cabin. The prices vary exponentially if you plan on decking the interiors with gold or crystal. The top speed of the S-92 is around 194 mph (312 km/h), with a range of 594 miles (956 km). The prices range from $17 million to $32 million.
Helicopter charter can be the most stress-free travel familiarity you will ever have. Which includes being able to travel outside of airports to reach vital meetings or even other flights in a different airport. Though rich class can afford these luxury helicopters, they are worth the investment.