GL26- Predicting Performance Flashcards

(15 cards)

1
Q

What does the performance table provide?

A
  • A series of specified values
  • Interpolation to determine intermediate values
  • Values for nonstandard barometric pressure computations

The performance table is essential for understanding aircraft performance under varying conditions.

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2
Q

As the barometric pressure decreases, what happens to aircraft performance?

A

decreases

Lower barometric pressure typically leads to reduced aircraft performance.

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3
Q

What happens to aircraft performance when humidity increases?

A

decreases

Increased humidity can lead to reduced engine performance and lift.

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4
Q

How does density altitude affect aircraft performance?

A
  • Engine power output decreases
  • Propeller efficiency decreases
  • Aerodynamic lift decreases

Higher density altitude negatively impacts aircraft performance.

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5
Q

If the temperature increases from 50°F to 80°F and the pressure altitude remains constant at 4,000 feet, what happens to density altitude?

A

increases by 2,000 feet

Higher temperatures lead to increased density altitude.

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6
Q

What is the density altitude when departing from an airport at 5,100 feet above sea level with an outside air temperature of 28°C and an altimeter setting of 29.72 in. Hg.?

A

8,000 feet

Density altitude calculations are crucial for safe aircraft operations.

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7
Q

How does a headwind component affect landing performance?

A

reduces the groundspeed at touchdown and reduces the landing roll distance

A headwind can improve landing safety by reducing the distance required.

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8
Q

How do flaps affect landing performance?

A
  • Reduce approach speed
  • Steepen glide path
  • Permit lower touchdown speeds

Flaps are critical for safe landings, especially in short fields.

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9
Q

What is the effect of a headwind component on takeoff performance?

A

reduces the groundspeed necessary to achieve flying speed and reduces the takeoff distance

A headwind can enhance takeoff efficiency.

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10
Q

How does a tailwind component affect landing performance?

A
  • Increases groundspeed at touchdown
  • Increases total landing roll distance

Tailwinds can complicate landing scenarios.

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11
Q

What is the headwind component when departing from runway 32 with wind at 010 degrees at 22 knots?

A

14 knots

Understanding wind components is essential for safe takeoff and landing.

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12
Q

How does runway surface affect landing performance?

A

If the runway surface is not hard, smooth, and dry, braking effectiveness diminishes, which ultimately increases the landing distance

Runway conditions are critical for safe landings.

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13
Q

What is the total distance to clear a 50-foot obstacle given specific conditions?

A

2,351 feet

Calculating obstacle clearance is vital for safe takeoff.

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14
Q

What is the difference between the absolute ceiling and the service ceiling?

A
  • Absolute ceiling: altitude unable to climb
  • Service ceiling: altitude with climb no greater than 100 feet per minute

Understanding these ceilings is crucial for flight safety.

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15
Q

What is maximum range airspeed best described as?

A

the greatest distance using the minimum amount of fuel

This concept is essential for efficient flight planning.

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