Peregrine hypersonic hot structure experience with Multi-Layer Metal Insulation (MLM) is an ideal solution for NASA. Recent LHMEL tests up to 600 W/cm2 have proven that MLMI technology fabricated with advanced refractory materials/alloys can provide the protection sought by NASA. MLMI can be a reusable TPS with integrated structure that uniquely addresses the environment of high heat fluxes experienced during entry and decent. The individual layers are separated by egg crate structure minimized to create a torturous thermal path from one layer to the next but structurally integral in order to maintain support of the outer layers and provide support for aerodynamic loads. MLMI is damage tolerant, robust, ductile, low cost, reusable, lightweight (<.040 lbs./in3), durable, and can provide the primary load carrying capabilities for hot control surfaces. Where the outer layer is envisioned as a thin layer of refractory metal the surface of this layer can be protected via an oxide to provide a high temperature surface. Peregrine will utilize its technology in MLMI to produce an MLMI that can operate to 2,200˚C on a reusable basis.
Peregrine’s intent is to use advances in materials, analysis, and manufacturing techniques to develop a hot structure for atmosphere entry vehicle control surfaces of MLMI. This can be control surfaces for entry vehicles into the atmosphere of Mars or other planetary atmosphere or complete spacecraft bodies or entry shields. MLMI is a re-usable hot structure and can withstand temperatures of 2475 K. MLMI can also be adapted to insulate cryogenic tanks and devices while providing ultra-high insulation around sensitive instruments.
MLMI can be used for a number of airframes for commercial hypersonic vehicles. It can be used for re-entry vehicles for commercial spacecraft and for military hypersonic vehicles. This MLMI can also be adapted to insulate cryogenic tanks and devices. While providing ultra-high insulation around sensitive instruments for satellites and probes.