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Systems Engineering Portfolio
 
Low-Mass
Aeroshell
Space
Reentry
Vehicle
Future planetary exploration missions will require
innovative solutions to decelerate space vehicles upon atmospheric
entry. These vehicles will need protection from extreme reentry
heating conditions without increasing system weight or energy
consumption. New aerobraking systems must provide additional surface
area for deceleration without adding to vehicle weight or stowed
volume. NASA’s In-Space Propulsion Technology Program is
funding CRG to develop a low-mass deployable aeroshell mechanism
activated by a unique shape memory polymer (SMP) called Veriflex®.
In CRG’s design, a large surface area, SMP-activated
aeroshell will stow in a highly compact pre-launch configuration
and later self-deploy to its operating configuration, locking
in place prior to atmospheric entry. The low-mass deployable aeroshell
decelerator deploys with a hinge activated by the SMP.
Shape Memory Technology
This vehicle reentry innovation is possible through shape memory technology. In CRG’s design, the SMP actuator will deploy the aeroshell extension during transit through deep space, well before entering the atmosphere. Once deployed, the aeroshell extension will lock in place for atmospheric entry.
CRG has been demonstrating the utility of Veriflex in a wide range of advanced technological systems, including morphing aircraft, deployable space structures, and “smart” tooling for composite part manufacturing. CRG’s expertise in tailoring the characteristics of shape memory polymers allows the engineering of these materials to meet various environmental and system performance requirements.
As NASA and commercial space activities grow, so will the need to find reliable methods of vehicle reentry. SMP-hinged deployable space structures offer a low-mass, low-energy means of decelerating mission payloads safely to planetary surfaces.
Benefits:
• Low-energy actuation
• Precision deployment
• Increased aeroshell surface area for improved braking
• Low system weight penalty
• Reduced design and fabrication complexity
• Compatibility with current thermal protection materials
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