# @stem_antics on Instagram

- **Type:** Video
- **Original URL:** https://www.instagram.com/p/DVRmYYmkpLd
- **Gondola URL:** https://gondola.cc/posts/61935824-stem-antics-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/fb98fa303f.jpg
- **Posted:** 2026-02-27T20:38:45.000+00:00
- **Account Owner:** Stem Antics (@stem_antics) — https://gondola.cc/stem_antics

## Caption

Unlike a conventional DRS flap that rotates a few degrees to reduce drag, this concept rotates through a much larger angle, approaching 180°. That changes everything about the load path.

At around 90° rotation, the flap is effectively broadside to the freestream. Projected frontal area spikes. Drag force scales with dynamic pressure (q = 1/2 rho V^2), so at F1 speeds the aerodynamic load can increase dramatically in a very short time window.

That means:

• A transient peak in drag force
• A rapid shift in center of pressure
• A torsional impulse through the hinge and rear wing pylons
• High bending moments at the mounting interface

The structure must survive not just steady-state loads, but these dynamic, rotating, unsteady loads.

From a fluid mechanics perspective, mid-rotation introduces separated flow, vortex shedding, and highly three-dimensional wake structures. CFD visualizations show strong velocity gradients and recirculation zones forming behind the flap. That creates fluctuating pressure fields, not smooth, uniform loading.

From a structural mechanics perspective, this is a fatigue and stiffness problem:

• The hinge mechanism must resist shear and bending simultaneously
• The carbon composite layup must handle cyclic peak loads
• Aeroelastic coupling becomes critical (flex alters airflow, airflow alters load)
• Actuation speed must balance responsiveness with structural shock

And remember: F1 rear wings are regulatory components. Any innovation must pass FIA deflection tests and load requirements. So teams are designing for strength, stiffness, weight minimization, and compliance with strict deformation limits.

#f1 #stemantics #stemeducation #engineering #engineeringexplained

## Stats

- **Views:** 51,058
- **Likes:** 3,246
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- **Comments:** 19

## Tags

engineering, f1, stemeducation, engineeringexplained, stemantics

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