Chapter 10:Modeling of Stiffness,Strength,and Structure 465 江 可 Fig.10.2.Cylindrical samples of x-aerogel It is envisioned that aerogel material can be used as the central core bonded between two facesheets of a sandwich plate.As aerogels are highly porous,facesheets will be necessary to make the sandwich composite panels impermeable for storing cryogenic fuels.Facesheets can be made of carbon fiber-reinforced polymer(CFRP)having high tensile load-bearing capability.Schematics of a typical sandwich plate with a standard honey- comb core and an x-aerogel core at the center are shown in Fig.10.3.As another example of a practical application of x-aerogel,a conceptual design of a prototype cryogenic propellant tank using x-aerogel material is shown in Fig.10.4. Honeycomb core Facesheet Facesheet x-aerogel (a) (b) Fig.10.3.(a)Traditional sandwich panel with honeycomb core and (b)novel sandwich panel with x-aerogel as central core materialFig. 10.2. Cylindrical samples of x-aerogel It is envisioned that aerogel material can be used as the central core bonded between two facesheets of a sandwich plate. As aerogels are highly porous, facesheets will be necessary to make the sandwich composite panels impermeable for storing cryogenic fuels. Facesheets can be made of carbon fiber-reinforced polymer (CFRP) having high tensile load-bearing design of a prototype cryogenic propellant tank using x-aerogel material is shown in Fig. 10.4. Fig. 10.3. (a) Traditional sandwich panel with honeycomb core and (b) novel sandwich panel with x-aerogel as central core material Chapter 10: Modeling of Stiffness, Strength, and Structure capability. Schematics of a typical sandwich plate with a standard honey￾comb core and an x-aerogel core at the center are shown in Fig. 10.3. As another example of a practical application of x-aerogel, a conceptual 465