Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Thiết bị đo ma sát không gian: Thiết kế cho các thí nghiệm tiếp xúc trên quỹ đạo
Tóm tắt
Tám thiết bị đo ma sát kiểu pin-on-disk đã được chế tạo để thử nghiệm vật liệu trong không gian trên Trạm Vũ trụ Quốc tế. Chúng sẽ được tiếp xúc trực tiếp với môi trường quỹ đạo thấp (LEO) trên nền tảng "Các thí nghiệm vật liệu trên Trạm Vũ trụ Quốc tế", nơi chúng sẽ trải qua các điều kiện khắc nghiệt như oxy nguyên tử, chân không siêu cao, bức xạ (bao gồm cả bức xạ UV) và nhiệt độ dao động từ -40 đến 60 °C. Để tồn tại trong quá trình phóng và LEO, những thiết bị đo ma sát này đã được thiết kế rất nhỏ gọn, bền chắc và tin cậy. Các thí nghiệm về ma sát pin-on-disk hiện tại đang được thực hiện với tốc độ trượt 13,2 mm/s (14 RPM tại bán kính đường mòn 9 mm) và tải trọng chuẩn 1 N với pin hình cầu có bán kính 1.5875 mm. Các vật liệu được thử nghiệm bao gồm MoS2/Sb2O3/Au, MoS2/Sb2O3/C, YSZ/Au/MoS2/DLC và các bộ phủ DLC chứa SiO, cùng với mẫu khối của các nanocomposite polytetrafluoroethylene (PTFE) và alumina, cũng như vàng.
Từ khóa
#Trạm Vũ trụ Quốc tế #ma sát #thí nghiệm không gian #vật liệu #oxy nguyên tử #chân không siêu cao #bức xạ UV #pin-on-diskTài liệu tham khảo
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