Components become ‘active’ when they automatically engage and move based on vehicle driving conditions. to improve a hatchback’s drag by using an extending rear parcel.
Incidentally, there’s a lot of the same aerodynamics in the Prius and new Insight as in the old 99/900. So it’s permanently open. Variable-height suspension (Veyron, Touareg) might be another trick in this arsenal: something that can hunker down at highway speed would probably do some good, while still allowing the “on stilts” feel in the city. But I think a well designed full undertray could accomdate routine maintenance without adding significantly to billable work hours, really improve fuel economy, and not be susceptible to failure like active aerodynamics. I remember seeing an old Gran Torino with rusty quarters (is there any other kind?). But before we get side tracked into a stupid-do-it-yourself-tuning lesson, active aerodynamics were first the things of great racing engineers. Aprilia hasn’t been so forthcoming about precisely how its idea for active aerodynamics works, but on last year’s RS660 concept bike the firm claimed it featured ‘Aprilia Active Aerodynamics’ or A3. Controlled by a pedal and locked in place by an hydraulic arm, this large flap could tilt from 0 to 90 ° in less than two seconds, even when the car was moving at a speed of 250 km/h. My wife’s Passat gets really good highway mileage and sure enough the quick-lube guys hate it because of all the under-tray plastic bits keeping the air flow clean and smooth. The air brake reduces braking distances by up to 20 meters.
Cookies improve the functionality of our website and offer you the best experience. Components become ‘active’ when they automatically engage and move based on vehicle driving conditions. Design matters.
On top of the cost, active aerodynamics bring more mechanical items which ultimately add weight to a car. Another recent, less famous but equally important application: BMW cars equipped with the Efficient Dynamics package. And active aero helps enable design.” But what if, I posit, there’s a propulsion breakthrough? Other systems take the form of moving air ducts, front spoilers and even flaps on bodywork in some cases.
The most obvious example: the retractable spoilers found in a number of sports cars (e.g. These trick devices were once limited to the most extreme supercars on the road, but more affordable machines are picking up the technology too.
Another recent, less famous but equally important application: BMW cars equipped with the Efficient Dynamics package. However, in the name of safety, invoking the random robustness of the assembly, the technical stewards refused the device for the race.
This is old hat. Aerodynamcis, as they apply to an automobile’s fuel efficiency are on a vector, relatively flat until you get up around 50 MPH. We manufacture active aero systems in England and Canada. Well, let’s do the maths. These systems are expensive to develop, expensive to fit and expensive to repair — which will all ultimately see the list price and potentially cost of running a car rise. Consequently, the firm with the star withdrew from all competition, without its competitors really identifying the potential of this engineering discovery. Diffusers - Engineering Basics - Aerodynamics, The McLaren P1: Making Hyper Advanced Aerodynamics Gorgeous, 2014 Porsche 911 Turbo - Aerodynamics Engineering Video, One:1 Active Rear Wing - /Inside Koenigsegg 2, Active Aerodynamics, a Slippery Obsession. The bindings, subjected to the enormous pressure exerted by the air, would eventually give way and break. Explore our Virtual Showroom and we’ll show you how.
Saab has shown a proposal (don’t they always?) It was there to reduce drag. These innovations, which sought to bypass the rules in place, were generally prohibited as soon as they were detected by the authorities and their scrutineers. Activate suspension tied to the 4WD mode of such vehicles would be perfect. Being an owner of an ’87 928, I can speak directly about this. Does that sound like it would lead to a “major impact on fuel efficiency” ? We explain….
There’s no question that the quest for better high speed mileage will lead to more vehicles with active surfaces. I like technology like this.
In 1989, the Porsche 964 was the first production car to be fitted with a retractable, electrically controlled rear spoiler.
But I suspect a more effective item would be a full undertray.
Rigidity tests of these appendices are now conducted to combat this practice. Composite Space Frame: A Different Animal, Magna is a mobility technology company – the only automotive supplier with deep systems knowledge and expertise across the entire vehicle.
Active aerodynamics are taking center stage. But nobody could ever really provide any proof that having the operational flaps would improve fuel economy. Bennetts is a trading name of Bennetts Motorcycling Services Limited, registered in England and Wales (company number 11453343) with its registered office at Worldwide House, Thorpe Wood, Peterborough, PE3 6SB.
In designing aerodynamic features on cars, two main concepts are considered: downforce and drag. Some of our members are looking for one, feel free to make them an offer.
Aerodynamics has been incorporated into automotive design for several decades.
More recently, Lamborghini put movable cooling air scoops on the Murcielago that extend at high speed, but also retract at extreme velocity to avoid being ripped off the car. Reports indicate that the feature could be part of a rear light module including the mechanism for surface actuation. Actively manipulating these surfaces may yield some incremental benefits for overall fuel efficiency.
Like the Honda system, whatever Aprilia’s design incorporated, it was largely hidden from view inside the fairing. When wings first started appearing on racing cars in the 1960s designers instantly jumped on the potential of moving parts, creating systems to flatten wings on straights and spring them back into place during corners. The inevitable happened during the Spanish Grand Prix, held in Barcelona in May, 1969, and marked by the high-speed accidents of the Lotus of Graham Hill and then Jochen Rindt. Although the feature is an aesthetic nightmare, the principle is sound.
And to think we complain that today’s cars are harder to work on by home mechanics! From now on, the organisers would allow no exceptions and Porsche was obliged to return to the drawing board.
Writing about bikes for 20 years.
Aprilia RS660 concept bike featured active aero, but it’s missing from the production version. The front flaps also open to direct the air flow to the turning vanes and allow more air inside the car for engine cooling. But since we already know that both Honda and Aprilia have been working on active aerodynamics, confirmation of the idea’s legality at the top level of production-based racing means we’re almost certain to be offered road-going models with exactly that technology in the near future.
Why does active aero matter so much? The most obvious example: the retractable spoilers found in a number of sports cars (e.g. Nowadays, you’ll find them on most high-end machines like the Ford GT’s rear wing, Ferrari 488 GTB’s hidden active flaps and the Pagani Huayra’s weird bodywork plates.
It’s like Knight Rider (the original) where KITT goes into “super pursuit mode.” The future is gonna be sweet! That is very interesting. Until recently even MotoGP bike designers believed that the cornering and drag drawbacks of wings would outweigh their advantages, so we’ve only seen the winglets emerge in the last few years. It’s only natural that as you read this, superbike designers around the world are looking at every implication of the FIM’s WSBK regulation clarification and working out precisely how they can use active aero to their advantage in the future. Another hope I have is that they’ll start lowering the floor of vehicles. At the same time, automakers are experimenting with downforce– aerodynamic aids that “press” the car towards the pavement to increase road holding. But this has not always been the case.
Aerodynamcis, as they apply to an automobile’s fuel efficiency are on a vector, relatively flat until you get up around 50 MPH. Active aerodynamics are one of the cleverest features you will find on any car on the market. Active aerodynamics: pure stupidity? Active aerodynamics are one of the cleverest features you will find on any car on the market. Bicycle as fast as you can, hunched over the bars, Tour de France style, wearing a good helmet and a close-fitting bike suit
Most of the engine’s horsepower are going towards countering drag even at lower speeds, so a reduction in either factor (coefficient of drag, or frontal area) is definitely significant.
At the same time, various carmakers are developing active aerodynamics that reduce drag at higher speeds. In doing so, it eliminated the drag penalty while keeping the ability to deploy the wings during braking, cornering or acceleration when their downforce might be helpful.
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