Mathematical Problems in Engineering / 2019 / Article / Fig 5

Research Article

Effect of Thermal Cycling on Operational Characteristics and Lifetime Prediction of Space Pulse Tube Refrigerator

Figure 5

Operation status of the PTRs in the thermal cycling test: (a, b) 1 W@60 K PTR; (c, d) 5 W@80 K PTR.
(a)
(b)
(c)
(d)