Sylvie Willis
The Piper Meridian is a single-engine turboprop aircraft that offers a comfortable and efficient flying experience. With a certified ceiling of 30,000 feet, the Meridian typically operates at lower altitudes for optimum comfort and fuel efficiency. At 27,000 feet, the Meridian burns approximately 36 to 37 gallons of fuel per hour while achieving impressive speeds of around 255 to 262 knots. This fuel burn rate can vary depending on factors such as wind conditions and the number of passengers or cargo on board.
| Characteristics | Values |
|---|---|
| Fuel consumption per hour | 36 gallons/hour, 37 gallons/hour, 48 gallons/hour, 261 pounds/hour, 240 pounds/hour |
| Fuel cost per hour | $301 (at $6.28 per gallon) |
| Average hop distance | 400 nautical miles or less |
| Maximum speed | 262 knots true airspeed, 263 knots TAS, 255 KTAS |
| Height | 26,000 to 28,000 feet, 27,000 feet, 29,000 feet, 30,000 feet |
| Cabin payload | 1,700 pounds |
| Fuel tank capacity | 170 gallons |
| Cabin load | 3 very small people, 2 real people and some cargo |
| Maintenance cost per hour | $282 (5-year average) |
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What You'll Learn
Fuel burn at 27,000 feet is 36-37 gallons per hour
The Piper Meridian is a single-engine turboprop aircraft that offers optimum performance at 26,000 to 28,000 feet, with a certified ceiling of 30,000 feet. At 27,000 feet, the Meridian burns approximately 36 to 37 gallons of fuel per hour, achieving a true airspeed of about 262 knots. This fuel burn rate is influenced by various factors, including the aircraft's payload and wind conditions.
The Meridian's fuel efficiency at higher altitudes is a result of its powerful 500 shp Pratt & Whitney PT6A-42A turboprop engine. This engine is de-rated from a higher capacity, providing ample power for cruise operations. However, the downside of de-rating is that the engine still requires substantial fuel to rotate its mass, resulting in higher fuel consumption at lower altitudes.
The Meridian's fuel burn rate of 36-37 gallons per hour at 27,000 feet translates to a fuel flow of 261 pounds per hour. This fuel efficiency contributes to the aircraft's overall performance and range capabilities. The Meridian can cover a significant distance with a full fuel load of 170 gallons, offering a range of nearly 1,000 nautical miles.
It's important to note that the Meridian's fuel burn can vary depending on factors such as wind conditions and flight speed. For example, flying at 20,000 feet can result in increased fuel consumption, while favourable winds at higher altitudes can improve fuel efficiency. Additionally, the Meridian's payload capacity can impact its fuel burn, as carrying a lighter load may allow for a longer range.
In summary, the Piper Meridian's fuel burn at 27,000 feet is approximately 36 to 37 gallons per hour, contributing to its overall performance and range capabilities. This fuel efficiency, combined with its comfortable cabin and reliable engine, makes the Meridian a popular choice for operators requiring an aircraft with good fuel economy and ample cruising speed.
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At FL270, fuel flow is 261 pounds per hour
The Piper Meridian is a turboprop variant of the Malibu, a six-seat, pressurized single-engine piston airplane. It is a simple-to-fly and comfortable aircraft with good fuel economy.
At 27,000 feet, the Meridian burns 37 gallons of fuel per hour, or 240 pounds per hour, to achieve a true airspeed of about 262 knots. This is within the airplane's typical flight range of 26,000 to 28,000 feet, where it can achieve maximum efficiency and optimum comfort.
However, the fuel burn rate can vary depending on factors such as wind conditions and flight speed. For example, at 20,000 feet, the speed drops by 20 knots, and the fuel burn increases. Additionally, the payload capacity can also impact fuel consumption, as carrying a full load of fuel and passengers may not always be feasible.
The Meridian's fuel efficiency is due in part to its Pratt & Whitney PT6A-42 engine, which is rated for 1,000 shp (shaft horsepower) but is derated to 500 shp in the Meridian, allowing it to operate well below capacity with less wear and tear. This contributes to its lower per-mile operating costs compared to similar piston twins.
While the Meridian offers good fuel economy for a turbine, there are options for further improving fuel efficiency. For example, converting to a JetPROP DLX engine can result in seven gallons per hour lower fuel burn, among other performance enhancements.
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Fuel flow at 20,000 feet is higher
The fuel flow at 20,000 feet is higher for the Piper Meridian. At this altitude, the speed drops by 20 knots, and the fuel burn increases. The optimum altitude for comfort and efficiency is between 26,000 and 28,000 feet. At 27,000 feet, the Meridian burns about 36 gallons per hour, or 240 pounds per hour, while achieving a speed of 255 KTAS.
The reason for the increased fuel flow at lower altitudes is due to the physics of flight. Air pressure decreases with altitude, resulting in thinner air. This thinner air creates less drag on the aircraft, improving fuel efficiency and speed. Therefore, flying at higher altitudes is generally more fuel-efficient.
However, there are limitations to flying at extremely high altitudes. As height increases, thrust decreases, and at a certain point, there is insufficient thrust to counteract drag or manoeuvre the aircraft. This height is known as the ceiling, and flying above it requires more thrust, which comes at the cost of higher fuel consumption.
Additionally, the cabin must be pressurised to ensure a comfortable environment for passengers to breathe. This pressurisation becomes more challenging at higher altitudes and can impact the structural integrity of the aircraft.
The Meridian typically operates with a useful load of 1,700 pounds. By subtracting the weight of fuel and passengers, operators can determine the remaining payload capacity. The Meridian's performance is also influenced by wind conditions, which can impact speed and fuel efficiency.
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Fuel flow at FL250 is 250 pounds per hour
The fuel flow rate of an aircraft is dependent on several factors, including altitude, wind speed, and payload. For example, the fuel burn of a Piper Meridian increases when flying at 20,000 feet compared to higher altitudes. Additionally, strong headwinds at higher altitudes can impact the fuel efficiency of the aircraft.
The Piper Meridian is a popular turbine aircraft known for its comfort, performance, and fuel efficiency. According to reports, the Meridian burns approximately 240 pounds of fuel per hour at 27,000 feet, translating to 36 gallons per hour or 37 gallons per hour to achieve a true airspeed of 262 knots.
When considering the fuel flow rate at FL250, or 25,000 feet, the fuel flow is estimated to be 250 pounds per hour. This value is calculated based on the aircraft's fuel consumption and the specific fuel being used.
It is important to note that the fuel flow rate can vary depending on various factors, including the aircraft's weight, temperature, and engine settings. Additionally, the Meridian's fuel efficiency is influenced by its Pratt & Whitney PT6A-42 engine, which is derated to 500 shp, resulting in less wear and tear and fewer failures between overhauls.
In summary, the Piper Meridian's fuel flow at FL250 is estimated to be 250 pounds per hour, contributing to its reputation for good fuel economy in its class. However, actual fuel consumption may vary based on a range of factors, and operators should carefully consider payload and stage length when planning fuel requirements for a flight.
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JetPROP DLX conversion reduces fuel burn by 7 gallons per hour
The Piper Meridian is a single-engine turboprop variant of the Malibu six-seat, pressurized single-engine piston airplane. It is simple to fly, relatively inexpensive to maintain, and has good fuel economy for a turbine. At 27,000 feet, the Meridian can achieve a true airspeed of about 262 knots while burning 37 gallons per hour.
However, if you're looking to further enhance the performance of your Meridian, a JetPROP DLX conversion may be worth considering. This conversion involves replacing the stock piston engine with a new Pratt & Whitney PT6A-35 turbine, resulting in significant improvements in various aspects, including fuel efficiency.
With the JetPROP DLX conversion, you can expect a reduction in fuel burn of 7 gallons per hour compared to the Meridian. This means that instead of burning 37 gallons per hour, your aircraft will now consume approximately 30 gallons per hour. The decrease in fuel consumption is a notable advantage, especially for long-distance flights or when operating in areas where fuel costs are high.
Additionally, the JetPROP DLX conversion offers other benefits. It provides 60 more horsepower than the Meridian's Dash 42 engine, resulting in a 41% faster initial climb rate. The conversion also improves short-field performance and increases speed, making it a popular choice among European owners.
While the JetPROP DLX conversion offers enhanced performance and fuel efficiency, it is important to consider the trade-offs. The JetPROP DLX has a lower payload capacity when fully fuelled, typically accommodating 200 to 300 pounds of payload. This limitation may be a factor for operators who frequently carry heavier loads. Additionally, the conversion process requires a significant investment, with a combined cost of nearly $1 million for a used Malibu and the conversion itself.
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Frequently asked questions
The Meridian burns about 36 gallons of fuel per hour at 27,000 feet.
At 263 knots TAS, the Meridian burns 261 pounds of fuel per hour.
At 250 knots, the Meridian burns 250 pounds of fuel per hour.
At 20,000 feet, the Meridian burns more fuel per hour than at 27,000 feet.
