Gallery: Key F1 tech shots at United States GP

Ferrari has introduced a new front wing for the US GP, which features a shorter endplate and another aggressively out-turned vane that's anchored to the rear of it (arrowed).

After Ferrari toyed around with a new diffuser concept in the post-Hungarian GP test but failed to race it, the team is set to trial another design in Austin. The revised layout features a flat central section (white arrow), rather than the curved one used previously (see inset). Meanwhile, another vertical fence has been added to the side of the crash structure in order to work the airflow harder and assist the revision below.

Haas has introduced a sizeable update package, which includes the revised bargeboard and new sidepod deflector pictured here. The bargeboard features a series of serrations in the footplate (red arrow), while the deflector (blue arrow) is a horizontally-louvred panel in a similar vein to the appendage used by Ferrari throughout 2017 and recently introduced by Red Bull in Singapore.

Williams continues to optimise the FW40 as the season draws to a close, with the deflectors introduced a few races ago now floated rather than the forwardmost element being anchored to the floor. The team has also revised the floor's axehead inline with these changes in order to bolster performance in that area of the car.

Ferrari returns to a five-slot configuration in the floor deck ahead of the rear wheel in order to quell the effects of tyre squirt. This falls in line with the changes the team has made to the diffuser itself.

Note the complex geometry on the outer section as the flared gurneys fold back on themselves to increase the diffuser's overall surface area.

The W08 from the rear shows off detail of the rear wing, brake duct fins, the chosen cooling solution, intersecting exhaust and diffuser.

Another look at the bargeboard update that Mercedes introduced last time out in Japan. It features revised footplate upstands, while the floor's axehead was also modified.

Sauber have introduced a new engine cover for Austin, which features a more conventionally-tapered spine, rather than a shark fin, and is devoid of the T-Wing entirely.

Red Bull’s bargeboards, sidepod airflow conditioners and floor in detail. Note the three strakes on the edge of the upturned floor - used to straighten any turbulent airflow it receives.

Mercedes is seemingly looking to run its conventionally-shaped rear wing for the US GP, rather than the ‘spoon’-shaped wing we’ve seen used previously this season.

In this close-up shot of the RB13's diffuser, note the serrated wall in the outer flank of the diffuser, which is complemented by the gurney which sits above and comes down behind it.

A close-up of the rearward monkey seat often used by Ferrari to improve the performance of its rear wing.

Renault Sport F1 Team RS17 bodywork detail

Renault's sidepod airflow, affectionately referred to as an 'aerocat', has been turned pink for the US GP.

Another close-up of the updated bargeboards and floor axehead.

Sahara Force India VJM10 nose and front wings

This rear shot of the SF70H gives us a great vantage point in order to assess the rear wing, twin monkey seats, star-shaped exhaust intersection, brake duct fins and diffuser.

A close-up of the open-end style endplate louvres employed by Mercedes.

The W08’s winged ride height sensor mounted just ahead of the splitter.

A look at the W08’s front wing pillars and the wider nose ‘cape’ introduced in Malaysia.

Mercedes-Benz F1 W08 front brake duct detail

The W08's front brake duct fairing has numerous aerodynamically-shaped surfaces in order to improve the airflow's path around the wheel and tyre.

The MCL32’s steering wheel, just like all of the current designs, is a complex interface that allows the driver to make a huge amount of alterations to the car and power unit throughout the course of a lap.