Adnimation ATF





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Sigala Back As MECF Venodr

What is new? For MECF members, has developed a new customer communications system, trained more staff, and with some inducements is committed to providing your products along their stated completion timelines.
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CORVETTE TODAY #163 - Corvette News & Headlines, Late May 2023

Recognizing Memorial Day, there is still a lot of news coming out in the world of Corvette! Keith Cornett from CorvetteBlogger is back on the show with your CORVETTE TODAY host, Steve Garrett, to detail all the important things happening with America's Sports Car.;
Here are a few of the topics covered by Steve and Keith on this week's show:
1. Engineers are spotted in what we think is the C8 ZR1 prototype
2. We have two new E-Ray videos available
3. New Z06 allocations went out in the middle of this month (May 2023)
4. The National Corvette Museum names a new Marketing Director
5. Australia recalls the 2022 C8 Corvette for being too loud
6. Did GM's Instagram page give us a C9 Corvette preview?
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2023 Corvette Info Including E-Ray, SR & Z06 Pricing, SR & Z06 Visualizers, 70th Anniversary Info, Press Releases for SR & Z06 & Their Build & Price, Order Guides & Visualizers

2023 Corvette Brochure:
E-Ray Visualizer:
Official E-Ray Press Release: https://www.midenginecorvetteforum.c...-press-release
Official GM E-Ray Pictures: https://www.midenginecorvetteforum.c...and-visualizer
+ 25 KEY E-Ray Components/Factors:
E-Ray Leaked Info/Visualizer: https://www.midenginecorvetteforum.c...tte-e-ray-leak
Z51 & Z06 GM Track Specs: https://www.midenginecorvetteforum.c...ecommendations
Z06 Order Guide:
Z06 MSRP and Options Pricing: https://www.midenginecorvetteforum.c...freight-charge
2023 SR Build & Price: https://www.midenginecorvetteforum.c...up-and-running
*2023 SR & Z06 Official Owners Manual:; and,
* 2023 GM Bash Major Seminar with HQ video: https://www.midenginecorvetteforum.c...ore-bash-video
*2023 Stingray Visualizer:
*2023 Stingray (ONLY Order Guide:
*70th Anniversary Combined Press Release For SR & Z06: https://www.midenginecorvetteforum.c...iversary-model
*Z06 Press Release: https://www.midenginecorvetteforum.c...-press-release
*Z06 Reveal Pictures: https://www.midenginecorvetteforum.c...eveal-pictures
*Z06 Visualizer:
Order Guide (unofficial): https://www.midenginecorvetteforum.c...-action-center
*Z06 vs Z07 Aero Components: https://www.midenginecorvetteforum.c...s-similarities
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C8 New Potential Patent For Aerodynamic Under Body Strakes

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  • C8 New Potential Patent For Aerodynamic Under Body Strakes

    A new C8 possible patent has been discovered which is an “underbody air strake design to improvement aero.” We have below a link of the already listed, previous 15 potential C8 mid engine patents.


    Click image for larger version  Name:	BFA24F19-2B16-4D0F-8C83-70E33C38B862.jpeg Views:	17 Size:	75.8 KB ID:	34271

    This 16th one is very similar to what Ferrari has been using in its 488GTB and more recent ME’s.

    Below is #16, with many thanks/credit to GM Authority. Thanks/credit to them for every picture in this thread.

    Originally posted by gmauthority
    GM Patents New Underbody Air Strake Design To Improve Aerodynamics
    • GM Authority is looking for professional automotive journalists with at least three years of experience to join our rapidly-growing team. We pay between $60,000 and $80,000 per year. More details here.
    • 11
    General Motors was recently granted a patent covering aerodynamic body panels of motor vehicles along with methods for using said panels and strakes, GM Authority has uncovered.

    Assigned serial number 10,155,552 at the United States Patent and Trademark Office (USPTO), the GM patent was filed on January 30th, 2017 and granted on December 18th, 2018. Titled “aerodynamic strakes for underbody panels of motor vehicles”, the patent lists Anthony V. Marmo of Detroit, MI as its inventor.

    The patent is comprised of two primary parts – an explanation of the claims made in regard to the design and implementation of the underbody panel design, and a collection of four images that illustrate an example of the engineering when applied to the rear valence of a motor vehicle.

    GM Underbody Strake Patent 002The Engineering

    In an attempt to improve aerodynamic performance and fuel efficiency, a hypothetical vehicle is equipped with one or more vehicle underbody panels. The panels may feature one or more elongated air strakes positioned at specific “angles of attack” while the air strakes have curvilinear plan view profiles with inboard-facing radii of curvature. Exact dimensions are dependent on the application, but in the example presented in the patent, the air strakes help to guide airflow traveling fore-to-aft along the undercarriage to increase static pressure on the rear end of the vehicle.

    The patent claims that the air strakes can help to achieve a measurable aerodynamic drag reduction of at least 0.004 CD, which may equate to a reduction of 1.0 gCO2/mile per vehicle.

    The patent suggests that engineers would aim to make the components as lightweight as possible by using lightweight materials, such as carbon fiber composites, polyethylenes, polyethers and similar substances, along with steel, aluminum, and titanium alloys. The underbody paneling can either be built into the whole body panel itself, or affixed to the panel via fasteners of an undetermined sort. In Plain English

    If all that engineering jargon is too much, here’s an explanation in simpler terms: by designing specific formations onto the inside (or the underbelly) of rear body paneling, engineers can improve a vehicle’s aerodynamic performance by creating a smoother “transition” of air traveling underneath the vehicle from the front to the rear. The easiest way to understand this is to view the illustrations above and below. The image above shows the location of the underbody air strakes (labeled #22), and the image below is a zoomed-in view of various strake designs.

    The ability to improve a vehicle’s aerodynamic efficiency can be used to make the vehicle more compliant to drive at high speeds. Besides improvements in stability, the air strakes can also improve a vehicle’s fuel efficiency by improving its aerodynamic properties (reducing its drag). If a vehicle has too much drag, it won’t coast as well as a more aerodynamic vehicle, thereby require more output from the vehicle’s powertrain to keep it moving.

    GM Underbody Strake Patent 003The Benefits

    The proposed design of a body panel at the rear underside of a vehicle would improve the way air flows underneath said vehicle. By creating certain ridges at certain angles, the engineers can manipulate the effects of moving air, which would in turn allow for greater efficiency.

    As we mentioned, the ability to improve a vehicle’s aerodynamic efficiency can be used to give the vehicle greater stability at higher speeds, and it can also be used to design vehicles that ‘coast’ more easily and use less fuel, especially at highway speeds. The benefits of such a design continue to be beneficial no matter the powertrain, including internal combustion engines (gasoline/diesel), hybrids or electric vehicles. Where To From Here?

    As emissions regulations and fuel economy standards continue to increase, General Motors – along with other automakers – will be forced to bring to market innovative ways to deliver cleaner and more efficient vehicles. When it comes to things such as alternative fuel vehicles, weight reduction and aerodynamic efficiency are two factors that play increasingly critical roles.

    The idea makes even more sense when one considers the fact that GM is heavily in electric vehicles, planning to introduce 20 new EVs by the year 2023

    GM Underbody Strake Patent 004

    Considering the patent was originally filed over two years ago (in January of 2017), we believe that GM is looking to implement the proposed underbody paneling on its vehicles. We expect to see a system like this one implemented sooner rather than later, as GM continues to improve and refine its technology while also meeting the demands of emissions regulations. Current Uses

    The use of underbody paneling to better manage and/or alter air flow and improve aerodynamic efficiency isn’t at all a new concept – just take a look at a stock Chevrolet Corvette C7 Z06 and you’ll see that the rear diffuser features strakes. However, the particular design and use of strakes outlined in the patent is something we haven’t seen in current General Motors vehicles. And even though the patent uses a photo of the Cadillac ELR, pay no mind to that – it’s just for illustration purposes. Patent Document

    Check out the complete patent application in its nine-page glory right here (PDF file format). GM Underbody Strake Patent 002GM Underbody Strake Patent 003GM Underbody Strake Patent 004
    Last edited by John; 04-28-2019, 09:14 PM.
    2023 Z06: Elkhart Lake Blue, 2-tone blue interior, HTC, Standard Z06 with Z07 aero pkg, CCB’s, 3LZ, E60, every visible carbon fiber option including wheels, Jake Design Pkg. Lifetime, annual contributors, and 25 year NCM members. Home is the beautiful Pacific Northwest.

  • #2
    Very interesting, I always thought uniqueness was a key part of getting a patent, I wonder what aspects of this patent make it unique. The article even calls out that the tech has been around for awhile. (i'm just asking out of ignorance, I have no clue to what degree something has to be unique or even if it does in order to get a patent)


    • #3
      Darn good question. Must have been just unique enough that it met the USPTO standard. As to what is the difference???
      2023 Z06: Elkhart Lake Blue, 2-tone blue interior, HTC, Standard Z06 with Z07 aero pkg, CCB’s, 3LZ, E60, every visible carbon fiber option including wheels, Jake Design Pkg. Lifetime, annual contributors, and 25 year NCM members. Home is the beautiful Pacific Northwest.


      • #4
        This is amazing to me. I read aerodynamic books in the 1980’s, describing many of these devices. I have installed many of these things on our race car and many others have done the same. Its really old news to road racers, I guess nobody thought to patent it, as everybody was using it.
        We had “ turning vanes” in the under tray on my 1979 Williams FW07 Formula one car.
        GM caught all of us napping.
        3LT Long Beach Red , Z51, FE4 , ZZ3, Black interior ,38S red stitching, Q8T, FA5, ER1, CFX, and R8C


        • #5
          Originally posted by Racer86 View Post
          GM caught all of us napping.
          That's the "beauty" of a good patent attorney, and why they get paid so much.
          My C8:
          '20 Elkhart Lake Blue 2LT Coupe, Natural Interior, GT2 Two-Tone Seats, Performance Exhaust, Front Lift, Carbon Flash Wheels, Engine Appearance Package 2000 Status December 27, 2019; 3000 Status January 2, 2020; 3400 Status March 10, 2020;TPW March 16, 2020; Built June 4th, 2020 (COVID-19); Delivery July 1, 2020

          Current Vettes:
          '68 Lemans Blue 327/350 Convertible
          '91 Turquoise Convertible with Hardtop
          '14 Lime Rock Green 2LT Convertible, Black Top, Kalahari, 7-Speed, Performance Exhaust


          • #6
            Originally posted by Mobius View Post

            That's the "beauty" of a good patent attorney, and why they get paid so much.
            Nail On the Head!!! Cannot underestimate the value of good Counsel!!


            • #7
              Sorta like the baffles in the grills on new trucks they seem to add the aero which is shown with a 3-4 MPG gain in highway mile over earlier models.
              Pretty cool when your full size truck gets 24 MPG with 400 hp.