Rivian R1T Low (0.30Cd) Drag Coefficient Claims Analyzed In Virtual Wind Tunnel

Rivian R1T Low (0.30Cd) Drag Coefficient Claims Analyzed In Virtual Wind Tunnel

https://reddit.com/r/electricvehicles/comments/xlv2k3/rivian_r1t_low_030cd_drag_coefficient_claims/
WarMace
https://insideevs.com/news/611642/rivian-r1t-aerodynamics-drag-coefficient-simulatiion/


Rivian R1T Low (0.30Cd) Drag Coefficient Claims Analyzed In Virtual Wind Tunnel



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4 thoughts on “Rivian R1T Low (0.30Cd) Drag Coefficient Claims Analyzed In Virtual Wind Tunnel

  1. To save you a click, the short version of the story is that someone scanned a Rivian to generate a 3D model and simulated it to get a coefficient of drag and got 0.32 very close to the claim of 0.3, much lower than other pickups.

  2. Something that was surprising to me was I recently watched a video about drag coefficients that made it seem like it is not a super exact science. The choice of wind tunnels can apparently have a fairly significant effect on the results from what that video said. We aren’t talking totally different, but enough that differences like in this article of .30 vs .32 kind of just happen. Then again with what they say in the article maybe part of that is just that different vehicles of the same model can vary a fair bit based on tiny differences in alignment of panels and things.

  3. It’s a believable number. There will be other EV pickups with lower coefficients.

    Traditional pickups have huge cooling needs. So air management isn’t just about shaping the air over the body… it’s about directing it through the coolers.

    The tires and wheelwells are the biggest factors beyond the C-pillar to bed transition. High approach angles and aggressive tires are the nemesis of airflow.

  4. I believe there claim is valid as they tested the 21” road wheels for their official ratings and they say that range an acceleration are impacted with the 20” wheels with a/t tires. The problem with statically scanning the exterior of a vehicle is you don’t model air channels that a vehicle has effectively. Behind the front wheel the R1T has a splitter to help the air coming off the wheel. Vehicles like the ford lighting has active aero systems. My Lightning has a deployable front air dam and grill shutters in the bumper that adjust depending on air flow needs. Here is a good article which includes so subtle things manufactures do that these type of models don’t take into consideration. https://www.motortrend.com/news/2015-ford-f-150-is-most-aerodynamic-f-series-ever/

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