Russian para-athlete, Dmitry Pavlenko – assisted by 3D printed diving gear – has made a record-breaking dive in Egypt’s Red Sea.
帕夫伦科（Pavlenko）于2018年5月7日使用浮力杠杆执行了40米独立潜水，该潜水杆在水下时控制了他的空气循环阀。杠杆是由由学生工程团队设计和创建的莫斯科理工大学(MPU) in Russia.
Commence project “Depth Assault”
为了深入海面，潜水员必须佩戴装有两阀的特殊背心以控制空气循环。凭借他独特的解剖帕夫伦科，无法正确控制这些阀门，因此需要杠杆。
帕夫伦科（Pavlenko）在俄罗斯军队服役时，在炸弹爆炸中失去了双臂和腿部，他的目标是超越四人截肢者和潜水员菲利普·克罗伊森（Philippe Croizon）的33米纪录潜水。因此，他创建了一个自制杠杆。但是，这个杠杆最终变得有问题。打电话Anisoprint, a manufacturer of continuous carbon-fiber FFF 3D printers, and MPU students, Pavlenko inspired the start of project Depth Assault.
该项目启动了hackathon3月24日，设计和创建潜水设备，使Pavlenko可以执行深入潜水的30米。
During the day-long event, six student engineering teams produced four different prototypes using Fused Deposition Modeling (FDM) of ABS plastic.
MPU机械工程系负责人Pavel Petrov说：“以功能性原型制造结束的比赛可以评估学生的培训水平。”
彼得罗夫补充说：“学生可以通过压力和添加剂技术看到材料处理，并承认社会上的实践技能现在需求。”
A trial and error process
仅使用ABS，第一个原型被证明是针对深层浸入压力进行测试时弱的。在整体结构上，多部分组件也被证明太弱了。
Eventually, a combination of these two requirements resulted in the most durable and adaptable lever.
Students Stanislav Shvydkin and Evgeniy Novikov proposed a design that would make the layers of FDM 3D prints a pro rather than a con.
“We decided to use this property as an advantage and to change the direction of the grid structure of the lever,” student Novikov explained. “Since we have an opportunity to receive a product with high durability, it is possible to neglect the durability of the structure itself by reducing the cross-sectional area.
The finished lever was 3D printed in a carbon-fiber reinforced ABS.
Novikov continues, “Owing to the chosen technology we saved on the material, leaving a large margin of the product’s durability. Additionally, a small lever has a low hydrodynamic resistance, and that is made up for by the reliability of the material.”
Pushing boundaries with 3D printing
From the 3D printedOnyx carbon fiber-reinforced nylon glovesused to give athletes an edge at the Commonwealth Games paratriathlon, to Rio Paralympian丹妮丝·辛德勒（Denise Schindler）的3D印刷碳纤维假肢 - 3D打印继续支持运动发展。
After Pavlenko’s successful deep dive, an official report of his immersion was recognized on May 8th by theEhandicap世界记录in non-Olympic sports.
“I feel that now my example can motivate other people with disabilities to take the first step out of the cage where many find themselves after an injury,” says Pavlenko.
Pavlenko plans on surpassing his record during a dive planned for this summer in Russia. Therefore, the student team will produce a new lever using the same 3D model.
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Featured image shows para-athlete Dmitry Pavlenko during deep dive. Photo via Moscow Polytechnic University.
