Porsche Lifestyle Group’s Post

Last week Red Bull built a gigantic 3,658 ft (1,115 meter) high ski jump in Iceland to set a new record. The video is magnificent. ❄️⛷️🏆 Ryōyū Kobayashi is one of the greatest ski jumpers of all time, having won 31 World Cup competitions, the World Cup overall title twice, and individual olympics gold medalist. At Hlidarfjall Akureyri in northern Iceland, the snow-covered takeoff launched Kobayashi to soar to a record breaking 291 meters with a top takeoff speed of 107 km/h. Spectacular ski jumping involves several #physics principles - primarily from mechanics and aerodynamics. ⛷️ Gravity: The force of gravity pulls the jumper downwards. The vertical motion of the jump can be described by the equations of projectile motion. 🚫 Drag: As the jumper soars through the air, air resistance (or drag) acts opposite to the direction of motion, which reduces the horizontal velocity over time. ✈️ Lift: Ski jumpers spread their skis in a "V" shape to maximize the surface area interacting with the air. This increases lift, much like an airplane wing, helping them stay airborne longer and travel further. 📐 Launch Angle: The angle of the jump at takeoff is crucial. A too high angle will result in a shorter horizontal distance due to more time spent in vertical motion, while a too low angle minimizes the time in the air. ⏩ Initial Velocity: The speed at takeoff (which in this case was 107 km/h) is a critical factor in determining the range of the jump. Higher initial speeds generally allow for longer jumps. 💡Calculating Ski Jumps... In a typical ski jump scenario where the jumper is not just dropping vertically but launching off a slope, both the horizontal velocity and the initial vertical velocity contribute to the jump's trajectory. Time of flight (t) formula... t = (v0y + SQRT(v0y^2 + 2gh)) / g This calculates the total time until the jumper hits the ground, starting from an initial height (h) with an initial vertical velocity (v0y). The vertical component of the initial velocity could be zero if the jump starts horizontally, but in ski jumps there's typically an initial vertical component due to the ramp angle. So, to calculate v0y vertical component, I can use the launch angle θ along with the total initial velocity (v0). The formula for this is derived from the basic trigonometric relationship in vector decomposition which is: v0y = v0 • sin(θ) Using 29.72 m/s (initial velocity converted from 107 km/h) and θ =10 degrees (launch angle but in radians), I get... = 29.72 × sin (0.1745) = ~ 5.16 m/s So this result gives us the upward component of the initial velocity. And plugging this into time of flight equation, I get approx 15.61 seconds which is fairly close to his actual flight of time of 10 sec. Of course this is all super simplified. In reality much more complex interplay of aerodynamics, lift, and optimal body positioning will significantly affect the distance beyond simple projectile motion calcs. #aerospace #stem

Tire Treads: What Do They Really Do? 🏞️🛞 “Are you a road cyclist or a mountain biking enthusiast? 🌲🚵♀️ The tread pattern on your tires is crucial for performance. Road tires have a smooth tread for speed and efficiency, while mountain bike tires feature deeper, knobbier treads to grip rugged trails. 🏞️🛞 But did you know that there are also hybrid tires with a mix of smooth and knobby patterns, perfect for mixed terrains? Tread patterns are designed to optimize traction, stability, and comfort depending on where you ride. 🛠️ #TireTreads #CyclingGear #TrailReady” #BikeTires #BicycleManufacturing #TireIndustry #CyclingGear #BikeComponents #TireTech #RideSmooth #CyclingLife #BikeSafety #EcoFriendlyTires #BicycleParts #CyclingCommunity #AdventureOnWheels #QualityTires #BikeMaintenance

// AERO vs. Weight 💥 In the world of cycling, one question has sparked endless debates: Which matters more, aerodynamics or weight? For years, the cycling industry and enthusiasts alike have placed disproportionate emphasis on shaving grams off bikes, but is lighter always better? Myth: A Lighter bike is always faster. Fact: Aerodynamics can yield greater performance gains than weight reduction. 🏋 🪶 Read the article: https://lnkd.in/eBjA4RDG

There's nothing like biking with your family and friends. The smile of a first bike ride is an amazing thing to experience, this video shows just that. #AdaptiveBiking #KidsOnWheels #AdaptiveRiding #freedomconcepts #adaptivebike #physiotherapy #physicaltherapy

The Truth Behind Our Direct-to-Consumer Truck | Explained by an Industry Expert Discover the reasons behind the criticisms we faced when we announced our direct-to-consumer truck. As an experienced bike shop owner, I share insights on the impact of this trend and its effects on the biking community. Stay informed and ride on! #DirectToConsumer #BikeShopInsider #CyclingCommunity #IndustryExpert #MountainBiking #BikeParkDevelopment #LocalRiders #BikeShopExperience #IndustryTrends #StayInformed

Is this scene in #Zurich #bike-friendly? It features wayfinding for cyclists. Trams and delivery trucks are common here, but many other people are riding their #bikes. Look at what the arrows point to. The one of the left is an active #tram track. The one on the right is a storm #sewer grate with the ribs running parallel to the path of cyclists. The ribs are in a bit of a wavy pattern, but someone using narrow tires would probably get a jolt if they strayed over it. This orientation is common throughout the city. So, is this satisfactory #infrastructure for cycling? If not, what stakeholders need to be engaged to remedy the situation? What might this say about compatibility between modes?

🟦 🔧🚴♂️ What do downhill biking and additive manufacturing have in common? More than you’d think! 💡 In downhill biking, lightweight yet strong components are the foundation of speed and safety. Additive manufacturing brings exactly that: optimized, custom, and durable parts that can withstand even the most extreme conditions. 🏞️💥 Just imagine: a world championship downhill bike equipped with the latest additive manufacturing technology. 💪 It’s not just about speed and performance—it’s about tailoring the bike to the rider’s exact needs. And here comes Trumpf, a true leader in the field! 🔝 Our innovations are opening up incredible possibilities not only for the industry but also for the world of sports. 🏆 #additivemanufacturing #downhill #innovation #Trumpf #bikelife

Discover 117 advanced bicycle repair tips, tricks and techniques. It's all and complete at https://lnkd.in/gQryJuFP (#bicycle, #bicycling, #bikeRepair, #bicycleRepair, #bicycleTechnology, #bikeTech, #bikeShop, #bikeMechanic)

Cycling aficionados, behold: the FSA Pro-Wing Loop AGX Handlebar—a masterstroke in engineering that delivers unparalleled stability and comfort. This isn't just another handlebar; it's a game-changer for anyone serious about their ride. From innovative aerodynamics to ergonomic perfection, this handlebar redefines what it means to grip the road. Don't just take our word for it, delve into the full review here: https://nuel.ink/fe7xJn. Elevate your cycling experience. 🌟🚴♂️ #CyclingInnovation #RideWithFSA