How do you read a 5 digit NACA airfoil?

NACA Five-Digit Series: The first digit, when multiplied by 3/2, yields the design lift coefficient (cl) in tenths. The next two digits, when divided by 2, give the position of the maximum camber (p) in tenths of chord. The final two digits again indicate the maximum thickness (t) in percentage of chord.

What does the 4 digit numbers mean in NACA airfoil?

The NACA four-digit wing sections define the profile by: First digit describing maximum camber as percentage of the chord. Second digit describing the distance of maximum camber from the airfoil leading edge in tenths of the chord. Last two digits describing maximum thickness of the airfoil as percent of the chord.

What are the major differences in NACA 4 digit and 5 digit series airfoils?

The NACA 5 digit airfoils use the same thickness envelope as the 4 series but with a different camber line and numbering system. The maximum thickness as percentage.In the examble XX=12 so the maximum thickness is 0.12 or 12% chord.

What does the first digit of 5 series NACA represents?

In a NACA 5-digit series (NACA 23012), the first digit (2) means the approximate camber in the percentage of chord, the second digit (3) indicates twice the position of the maximum camber in tenths of a chord, the third digit is either 0 or 1 and distinguishes the type of mean camber line, and the last two digits (12) …

What does every number of NACA 4412 airfoil mean?

The NACA 4412 is a four digit airfoil. The first digit expresses the camber in percent chord, the second digit gives the location of the maximum camber point in tenths of chord, and the last two digits gives the thickness in percent chord.

How do I choose a good airfoil?

The airfoil you choose is going to be a determined by the desired operating parameters of your design, each requirement you add will have input to your airfoil decision. For Example: Thin symmetrical airfoils are great for aerobatics but not for lift – see the Extra 300 vs a Zenith CH801.

What information does the second digit of a 4 digit NACA Code provide?

the second digit denotes the chordwise position of the maximum camber, XCmax, in tenths of the chord; the last two digits denotes the maximum thickness of the airfoil section, t, as a percent of the chord. Consider a specific example, the airfoil designated NACA2412.

How do you calculate airfoil coordinates?

In this case, multiply the chord of the airfoil you are plotting times percent of the station/ordinate pairs in percent. In other words, if the number given is 1.25 then multiply times 1.25%. If your calculator does not have a percent key, then multiply times 1.25 and then divide by 100.

How do I find my NACA number?

NACA 4 digit airfoil specification

1. M is the maximum camber divided by 100. In the example M=2 so the camber is 0.02 or 2% of the chord.
2. P is the position of the maximum camber divided by 10. In the example P=4 so the maximum camber is at 0.4 or 40% of the chord.
3. XX is the thickness divided by 100.

Which airfoil is used on the Boeing 777?

supercritical airfoils
When Boeing refers to the 767 and 777 as having aft-loaded wings, what they are implying is that both aircraft use supercritical airfoils.

How does the 5 digit airfoil system work?

The NACA 5 digit airfoils use the same thickness envelope as the 4 series but with a different camber line and numbering system. This digit controls the camber. It indicates the designed coefficient of lift (Cl) multiplied by 3/20. In the examble L=2 so Cl=0.3

How to search the NACA 5 digit airfoil database?

Airfoil database search (NACA 5 digit) Search the 1636 airfoils available in the databases filtering by name, thickness and camber. Click on an airfoil image to display a larger preview picture. There are links to the original airfoil source and dat file and the details page with polar diagrams for a range of Reynolds numbers.

What do the numbers mean on an airfoil?

The first digit specifies the maximum camber (m) in percentage of the chord (airfoil length), the second indicates the position of the maximum camber (p) in tenths of chord, and the last two numbers provide the maximum thickness (t) of the airfoil in percentage of chord.

What’s the maximum thickness of a 5 digit airfoil?

In the examble P=3 so maximum camber is at 0.15 or 15% chord The maximum thickness as percentage.In the examble XX=12 so the maximum thickness is 0.12 or 12% chord. The equation for the camber line is split into two sections like the 4 digit series but the division between the two sections is not at the point of maximum camber.