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Watch These Multiple C8 Corvettes Utilize Launch Control

For the last two days we’ve been in Corvette Heaven as we were invited by Chevrolet to come out to Las Vegas and test drive the 2020 Corvette Stingray. The test consisted of two parts that included a route through the Valley of Fire state park and then today we drove the new mid-engine sports cars at Spring Mountain Motor Resort & Country Club.

Today’s driving session culminated with the very talented instructors from the Ron Fellows Performance Driving School offering hot laps around the track. Each driver gave their passenger a demonstration of the capabilities of the new Corvette and those two fast laps started with engaging launch control as each car took to the track.

With 60% of the weight of the 2020 Corvette residing over the back wheels, the Launch Control demonstration shows just how quick these cars are able to put power to the pavement as those Michelin Pilot Sport 4S summer tires quickly hook up to send the car on the track.

We will be traveling from Las Vegas to home in Tampa on Wednesday, but keep checking back as we got a lot of great photos and videos from our 2020 Corvette drive on deck!


Source:
Video by Keith Cornett


America's Cup: American Magic release video of Test Boat nosedive

New York Yacht Club’s America’s Cup team, American Magic have released a video of their test boat doing a spectacular nosedive while sailing off the team’s base in Newport.

The team is now in Pensacola, Florida their training base during the northern hemisphere winter.

They have taken their AC75 Defiant to Pensacola.

The video is shot from one of the team’s drones flying above and astern, whether the nosedive was intentional (to get test/simulator data) or accidental is not clear.

While splashdowns (where the bow enters the water with a spectacular splash) are commonplace on the larger AC75’s, only one boat (and maybe two) have capsized, most of the foiling mishaps have occurred on the test boats. American Magic’s test boat, named “The Mule” is designed (apart from the 38ft production M38 hull) to be as close to an AC75 as possible.

The reason for this nosedive is two-fold. First, the boat is flying very high on her foils, and second, the rudder wing breaks free of the water about midway through the low-resolution clip, and at that point the nosedive becomes inevitable. The “phenomenon” is common to all boats that have similar foiling physics such as the AC50, F50, AC72 and AC75. In the AC50 it was reckoned that a rudder wing contributed 500kg of downforce when immersed in the water, and if it breaks clear of the water then that 500kg of downforce is suddenly released triggering the nosedive.

It is not known if The Mule was flying under manual or automatic flight height control at the time.

Within the leadup to the nosedive The Mule is flying high and level, rather than going through a rear up, followed by a crash/splash which is the common routine on an AC75.

At the end of the video an on-board sequence shows the top of the rudder post being moved fore and aft – this controls the angle of attack of the wing rudder – and it is this movement coupled with the high flight height that triggered the incident causing The Mule to trip over her foils, nosedive and then capsize.

Source Sail Word