High performance, low cost concept
MMA’s FDM configuration of HaWK solar array was designed to be low cost — especially in the 1kW per wing range — and extremely high performance. Its clever “petal assembly” is the basic building block for this self supporting and morphing structure. Like the petals of a daisy, each petal is folded when stowed, then unfurls around a center axis, one at a time by rotary actuator that is spring or motor driven. After rotating from a stowed stack to their deployed configuration, the FDM petals have a two order of magnitude higher stiffness than when stowed. The FDM’s performance and range of scalability are exceptional!
Key FDM-HaWK characteristics include:
- Morphing structure
- Panels change stiffness as deployed by 200+X
- Panels/CIC’s are self preloaded when stowed for launch-there is NO polyimide foam
- Morphing action provides initial motion kicker
- Folds with strain energy for simplicity and cost reduction
- No motors
- No control electronics
- Deployment rate is controlled
- Damped at the hub
- Sequenced (one at a time) but un-damped petal deployment
- Uses solar power panels that are designed for optimized manufacturability at the CIC vendor and lay down house (one of the largest costs of the program)
- Uses modularity to allow flexibility and scale-ability of a particular design
- Modularity enhances manufacturability at the solar array integration level
- Scaleable 100W-100kW
*The HaWK array wings are designed to interface in both a gimbal or a non-gimbaled configuration without interface/configuration changes.
To see a comparison of key specifications for existing HaWK configurations, please click here.