NACA 65(2)-415 Airfoil
naca652415Properties
Plot Type
Ncrit
Reynolds Numbers
Kulfan Parameters
Airfoil Geometry
NACA 65(2)-415 at a glance
At a Reynolds number of 1,000,000 the NACA 65(2)-415 reaches a maximum lift coefficient of 1.54 at 18.0° angle of attack, a best lift-to-drag ratio of 122 at Cl 0.88 (4.5°), and a minimum drag coefficient of 0.0060. It carries zero lift at -3.0°.
| Reynolds number | 200,000 | 1,000,000 | 5,000,000 |
|---|---|---|---|
| Max Clthe stall peak | 1.33 | 1.54 | 1.80 |
| at alphaangle of attack it occurs at | 13.0° | 18.0° | 19.0° |
| Best L/Dhighest lift-to-drag ratio | 70 | 122 | 148 |
| at Cllift coefficient it occurs at |
Performance Metrics
These curves are computed with NeuralFoil, a neural network trained on XFOIL, from a stored sweep across Reynolds number, Ncrit and angle of attack. How the polars are computed, and where they stop being trustworthy →
Run it at your Reynolds number
The curves above are a stored sweep at fixed Reynolds numbers. Enter the one your chord and speed actually give and NeuralFoil computes that polar now, onto this chart.
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Aircraft Usage
Found in UIUC Database
Aircraft recorded with two or more sections have a page of their own. All recorded aircraft
Sections like the NACA 65(2)-415
The five closest shapes in the library, by maximum thickness and camber and where along the chord each falls.
- LOCKHEED L-188 ROOT AIRFOIL14.0% thick · 2.0% camber
- MH 200 12.97%13.0% thick · 2.1% camber
- NACA 65(2)-21515.0% thick · 1.1% camber
- NACA 64(2)-41515.0% thick · 2.2% camber
- NACA 64(2)-415 [NACA 6a series from Theory of Wing Sections]15.0% thick · 2.2% camber
Ranked on geometry alone, from the stored CST parameters — no polar is consulted, so a section that sits close here can still behave differently at the Reynolds number you fly. A near-symmetric section is matched on thickness and its distribution only: with no camber to speak of, where its camber peaks is rounding error rather than shape.
Wings built with the NACA 65(2)-415
A design published on foil.tools that uses this section, newest first.
Published by people using the wing designer. A design naming this section says the author chose it, not that it was flown or measured — the numbers on each post are whatever that author ran. All published designs