Open type circular truncated cone-shaped thermal insulation devices for spacecraft thrusters

The invention discloses open type circular truncated cone-shaped thermal insulation devices for spacecraft thrusters. The spacecraft can be more effectively and more comprehensively protected from the thermal radiation of the thrusters by using the open type circular truncated cone-shaped thermal insulation devices. Each open type circular truncated cone-shaped thermal insulation device comprises a heat shield bracket and heat shield components, wherein the heat shield bracket is a circular truncated cone-shaped shell with a closed end and an open end; the top surface is the closed end and the bottom surface is the open end; the top surface is provided with a central hole that each thruster can pass through; at one side of the circular truncated cone-shaped shell, a gap through the top and the bottom surfaces causes the formation of an annular sector on the top surface and an open side surface; and the whole of the heat shield components has the same shape as the internal side of the heat shield bracket. Not