Aeroelastic Stability of Thermal Protection System for Inflatable Aerodynamic Decelerator

Fluid/Structural/Thermal/Dynamics Interaction (FSTDI) in Hypersonic Flow

“…Also Goldman et al have studied Fig. 6 Flutter boundary for a square plate with streamwise curvature conical shells in the context of the Hypersonic Inflatable Aerodynamic Decelerator that was motivated by a wind tunnel experiment at NASA Langley which showed flutter oscillations [36].…”

Heat Balance Features of Decelerator System Considering Real-Time Reliability

“…Decelerators are widely used in modern machinery as they could match the rotation speed and transfer torque between prime motors and work machines or actuators [1][2][3][4][5]. If the cooling system equipped with prime motor is not reasonably structured or lubricated sufficiently, the friction heat generated by decelerator during operation could not be dissipated effectively [6][7][8][9][10][11][12], and a too high temperature of heat balance will not only sap the performance and efficiency of prime motor, but also adversely affect the sustainability of the operation of various components, in severer cases, dramatic temperature rise could even cause thermal damage to the prime motor and shorten its service life [13][14][15][16][17][18][19][20]. To find answers of the said matter, it is necessary to study the temperature field and heat balance of the decelerator system, and this work is meaningful for improving the design of target system and ensuring its operation stability and reliability.…”

Coupled Aerostructural Modeling of Deployable Aerodecelerators for Mars Entry

“…Inflatable aero-decelerators comprise layers of bladder fabrics that inflate via gas generators, also covered in flexible TPS material. Both inflatable and mechanically deployable aero-decelerators have been investigated in recent years, but the major focus has been on inflatable designs such as NASA's Hypersonic Inflatable Aerodynamic Decelerator (HIAD) [2], which has seen extensive technology development and testing. Although mechanically deployable concepts are now being developed in NASA's ADEPT project and the Italian Space Agency/European Space Agency IRENE project, the technology readiness level remains low, and the technology is considered underexplored.…”