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2019cervelo s5的创新空气动力学设计专利

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运动自行车 发表于 2019-3-25 11:24:10 | 显示全部楼层 |阅读模式

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sevelo s5设计思想.png 在世界三大环赛选手使用的车架中,cervelo无疑是最年轻的一个,相比于Pinarello这样有着传奇而漫长历史的公路车品牌,cervelo虽然只有30年历史,却已经站在了公路车制造领域的顶端。




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 楼主| 运动自行车 发表于 2019-3-25 11:37:03 | 显示全部楼层
The 2019 S5 is the outcome of a comprehensive redesign that married Cervélo’s leading
aerodynamics research/knowledge with an acute focus on the rider’s experience
and needs. First, we went back to the aerodynamics drawing board and challenged
ourselves to see every component’s shape in fresh ways. But then, instead of
continuing to refine components, we changed our focus in two ways: (1) we considered
entire zones on the bike and (2) we minutely examined how bike and rider work as a
total aerodynamic system. Expanding our thinking this way gave our teams far more
design space in which to balance stiffness, handling, and comfort while—always and
above all—delivering fast. The result is the fastest and most comfortable aero road bike
Cervélo has ever created.
2019年S5是Cervélo领先的全面重新设计的结果空气动力学研究/知识,重点关注骑手的经验和需求。
首先,我们回到空气动力学绘图板并挑战,我们以新的方式看待每个组件的形状。 但是,而不是
我们继续改进组件,我们改变了两个方面的重点:
(1)我们考虑过骑自行车的整个区域
(2)我们仔细检查了自行车和骑手整体如何工作
全空气动力系统。 以这种方式扩展我们的思维给了我们的团队更多
设计空间,以平衡刚度,操控性和舒适性,同时始终和
首先是快速交付。
结果是最快,最舒适的航空公路自行车Cervélo曾创造过。


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 楼主| 运动自行车 发表于 2019-3-25 11:45:56 | 显示全部楼层
Aerodynamics • Aerodynamic savings of 5.5 watts (42 grams of drag) achieved, compared to the2014 S5 with AB04 (build standardized).
Stiffness
• Head tube stiffness increased by 13% to improve handling.
• Bottom bracket stiffness increased by 25% to increase pedal input and support theadditional head tube stiffness.
Ride Quality
• Bottom bracket dropped to lower the rider’s centre of gravity, providing greater stability during high speeds and turning.
• Trail length increased to provide greater stability.
• Trail values unified across all sizes, for superior ride and handling qualities at allframe sizes—a particular benefit for smaller frames

空气动力学方面:
  •与使用AB04(标准化构建)的2014 S5相比,实现了5.5瓦的空气动力学节省(42克阻力)。 刚性
  •头管刚度增加了13%,以改善操控性。
•底部支架刚度增加25%,以增加踏板输入并支持额外的头管刚度。
乘坐质量
  •底部支架下降以降低骑车者的重心,在高速和转弯时提供更高的稳定性。
  •增加了行程长度以提供更大的稳定性。
•各种尺寸统一的航迹值,在所有车架尺寸下都具有出色的驾驶和操控性能 - 这对于较小的车架尤其有利



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 楼主| 运动自行车 发表于 2019-3-25 12:49:30 | 显示全部楼层
Usability
• Aero cockpit comprehensively redesigned to allow concealment of both mechanicaland electronic control cables, while allowing easy adjustability.
• Stem stack range of up to 30mm (in 5mm increments).
• Handlebar stack range of 2.5mm, independent of stem.
• Handlebar pitch adjustment in two steps, to 2.5 degrees or 5 degrees.
• Compatibility with standard stems and handlebars to accommodate the widest fitrange possible.
可用性
•Aero驾驶舱全面重新设计,可以隐藏机械装置
和电子控制电缆,同时易于调节。
•阀杆堆叠范围可达30mm(以5mm为增量)。
•车把堆叠范围为2.5mm,与阀杆无关。
•车把间距调整分两步,即2.5度或5度。
•与标准杆和把手兼容,以适应最宽的配合
范围可能。

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 楼主| 运动自行车 发表于 2019-3-26 18:32:50 | 显示全部楼层
In this paper we describe the development process that produced the latest generation
of our flagship aero road bicycle, the new 2019 Cervélo S5. The achievements embodied
in this bicycle have emerged from our evolving engineering and design approach that
now integrates our industry-leading aerodynamics with an athlete-centred focus on ride
quality. Our goal was to deliver our fastest and most comfortable aero road bike ever.

在本文中,我们描述了产生最新一代的开发过程
我们的旗舰破风公路自行车,新款2019CervéloS5。 成就体现
这种自行车已经从我们不断发展的工程和设计方法中脱颖而出
现在,我们将业界领先的空气动力学与以运动员为中心的驾驶重点融为一体
质量。 我们的目标是提供有史以来最快,最舒适的航空公路自行车。


To get there, we drew on years of aerodynamic and structural experience, plus
extensive testing and feedback from both Pro Tour and amateur riders. The result is
not only the fastest road bike we have ever made, but one that is also lighter, stiffer,
and more comfortable than the previous generation. We’ve also built in the newest
industry standards, such as hydraulic disc brakes, internal cables, thru axles, and wide
tire clearance. Through it all, our mindset has been “remove limitations,” whether in
our design process or in the bike itself. We ruthlessly targeted anything that could be a
technical obstacle to achieving one's personal best.

为了实现这一目标,我们借鉴了多年的空气动力学和结构经验
Pro Tour和业余车手的广泛测试和反馈。 结果是
不仅是我们制造过的最快的公路自行车,而且更轻,更硬,
比上一代更舒服。 我们也创造了最新的
行业标准,如公路碟刹,内部电缆,直通轴和宽幅
轮胎清关。 通过这一切,我们的心态一直是“消除限制”,无论是否在
我们的设计过程或自行车本身。 我们无情地针对任何可能成为的东西
实现个人最佳的技术障碍。



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 楼主| 运动自行车 发表于 2019-3-26 20:11:11 | 显示全部楼层
The design journey to the new S5 was complex, touching nearly every aspect ofthe bike. Before we start to trace that journey, we’ll do a big-picture review of theperformance improvements, to serve as a roadmap to our eventual destinations. Theseimprovements are summarized in Figure 2 at the end of this section.
新S5的设计之旅很复杂,几乎触及了自行车的各个方面。 在我们开始追踪这一旅程之前,我们将对性能改进进行全面审查,以作为我们最终目的地的路线图。 这些改进总结在本节末尾的图2中。


Aerodynamics
• The aerodynamic savings is 42 grams of drag—equivalent to 5.5 watts to the rider(compared with a standard Gen II S5 equipped with AB04 handlebar).
S5 Aero Performance Improvement、

空气动力学
与骑行者相比,空气动力学节省了42克的阻力相当于5.5瓦(与配备AB04车把的标准Gen II S5相比)。
S5航空性能改进,

sevelo s5设计思想02.png








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 楼主| 运动自行车 发表于 2019-4-2 11:29:00 | 显示全部楼层
Figure 1. Aero performance of 2019 Gen III S5 compared with standard2014 Gen II S5 equipped with AB04 handlebar. Wind tunnel testingconducted at RWDI (Guelph, Ontario, Canada).图1. 2019 Gen III S5的Aero性能与配备AB04车把的标准2014 Gen II S5相比。 在RWDI(加拿大安大略省圭尔夫)进行风洞试验。

Stiffness
• The head tube stiffness was increased by 13% to improve handling.
• The bottom bracket stiffness was increased by 25% to increase pedal input and support the additional head tube stiffness.
刚性
•头管刚度增加了13%,以改善操作性。
•底部支架刚度增加了25%,以增加踏板输入并支持额外的头管刚度。


Ride Quality
• The bottom bracket was dropped to lower the rider’s centre of gravity, providinggreater stability during high speeds and turning.
• The trail length was increased to provide greater stability.
• Trail values were unified across all frame sizes, for superior ride and handling qualities at all sizes—a particular benefit for smaller riders. Excessive trail (often foundon small-sized bikes) requires the rider to overcome the tendency for the steering todive, as well as to expend extra effort on returning the steering to centre.



骑行感受度
•降低底部支架以降低骑车者的重心,在高速和转弯时提供更高的稳定性。
•增加了上管长度以提供更大的稳定性。
•所有车架尺寸均符合道路标准值,在各种尺寸下均具有出色的驾驶和操控性能 - 这对于较小的车手来说尤其有利。 过多的路径(通常在小型自行车上发现)要求骑车者克服转向潜水的倾向,并且要花费额外的努力将转向返回到中心。(通俗讲就是小车架定制化设计)

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 楼主| 运动自行车 发表于 2019-4-2 11:37:00 | 显示全部楼层
Usability • The aero cockpit was comprehensively redesigned around a new aerodynamic concept for the stem. After significant engineering challenges were overcome, this newdesign is both superbly aerodynamic and remarkably rider friendly.


可用性
  •航空驾驶舱围绕一个新的空气动力学概念进行了全面的重新设计。 在克服重大工程挑战后,这种新设计既具有极佳的空气动力学性能,又非常适合骑行者使用。



sevelo s5设计思想03.png
图2. 2019 S5的性能改进(10级)。
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 楼主| 运动自行车 发表于 2019-4-2 11:39:05 | 显示全部楼层
本帖最后由 运动自行车 于 2019-4-2 11:45 编辑

KEY COMPONENT ADVANCES
In keeping with our whole-system design philosophy, performance improvements
in the new S5 are not simply a one-to-one result of component improvements.
Nevertheless, it is helpful to focus on some of the more visible differences in the new design.

关键组件进展
符合我们的整体系统设计理念,性能改进
在新S5中,不仅仅是组件改进的一对一结果。
然而,关注新的一些更明显的差异是有帮助的
设计。


Steering control is moved away from the bearings with a new external steerer fork(FK60) .
• A patent-pending V-shaped stem (CS28) reduces drag by both:allowing unimpeded airflow along top tube, and providing hidden and low-frictioncable paths for all types of cabling systems, maintaining cable performance.
• A redesigned aero drop bar (AB08) reduces drag with an airfoil that is twisted fromcentre to edge to optimize its orientation to the local air flow.
• Use of a cutaway seat tube shape (pioneered for the P3C) improves flow across thewheel by moving the tire closer to the frame.

使用新的外部操纵杆将转向控制从轴承移开(FK60)。
•正在申请专利的V形阀杆(CS28)通过以下两种方式减少阻力:
允许沿顶管畅通无阻,并提供隐藏和低摩擦力
适用于所有类型布线系统的电缆路径,保持电缆性能。
•重新设计的航空吊杆(AB08)通过扭曲的翼型减少了阻力
中心到边缘以优化其对当地气流的定向。
•使用剖面座管形状(P3C首创)可改善整个管道的流动
通过将轮胎移近框架来转动轮子。



2014servelo_s5_01.jpg
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 楼主| 运动自行车 发表于 2019-4-2 12:50:57 | 显示全部楼层
2019cervelo开发历史:To understand why the design process for the new model is a departure, it is important
to understand the context from which it developed. Figure 3, Table 1 and Table 2
summarize how the S5 has evolved since its introduction in 2011.



要理解为什么新模型的设计过程是一个偏离,这很重要
了解它所发展的背景。 图3,表1和表2
总结了自2011年推出以来S5的发展历程。


sevelo s5设计思想04.png
图3 cervelo的发展各个版本比较

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