Christopher Cagle - Yorktown VA, US Robin Schlecht - Newport News VA, US
Assignee:
United States of America as represented by the Administrator of the NASA - Washington DC
International Classification:
B64C001/00
US Classification:
244123000, 244130000
Abstract:
A tailorable elastic skin is provided for covering shape-changing, or “morphable,” structures. The skin comprises a two-dimensional “planar spring” embedded in an elastomeric material. The invention provides a smooth aerodynamic covering capable of global elongation exceeding 20% with a low input force. The design can be tailored for light-weight, lightly loaded applications, or for more heavily loaded aerodynamic or hydrodynamic conditions.
Christopher M. Cagle - Yorktown VA, US Randolph H. Cabell - Hampton VA, US Travis L. Turner - Newport News VA, US Roberto J. Cano - Yorktown VA, US Richard J. Silcox - Poquoson VA, US Ralph D. Buehrle - Williamsburg VA, US George C. Hilton - Hampton VA, US
Assignee:
Administrator of the National Aeronautics and and Space Administration - Washington DC
International Classification:
B64C 13/00
US Classification:
244 998
Abstract:
A jet engine exhaust nozzle flow effector is a chevron formed with a radius of curvature with surfaces of the flow effector being defined and opposing one another. At least one shape memory alloy (SMA) member is embedded in the chevron closer to one of the chevron's opposing surfaces and substantially spanning from at least a portion of the chevron's root to the chevron's tip.
Christopher M. Cagle - Yorktown VA, US Robin W. Schlecht - Newport News VA, US
Assignee:
USA as represented by the Administrator of NASA - Washington DC
International Classification:
F16F 3/00
US Classification:
267110, 267112
Abstract:
A flexible volumetric structure has a first spring that defines a three-dimensional volume and includes a serpentine structure elongatable and compressible along a length thereof. A second spring is coupled to at least one outboard edge region of the first spring. The second spring is a sheet-like structure capable of elongation along an in-plane dimension thereof. The second spring is oriented such that its in-plane dimension is aligned with the length of the first spring's serpentine structure.
Travis L. Turner - Yorktown VA, US Roberto J. Cano - Yorktown VA, US Richard J. Silox - Poquoson CA, US Ralph D. Buehrle - Williamsburg VA, US Christopher M. Cagle - Yorktown VA, US Randolph H. Cabell - Hampton VA, US George C. Hilton - Hampton VA, US
Assignee:
U. S. A. as represented by the Administrator of the National Aeronautics and Space Administration - Washington DC
International Classification:
F02K 1/10
US Classification:
60771
Abstract:
A jet engine exhaust nozzle flow effector is a chevron formed with a radius of curvature with surfaces of the flow effector being defined and opposing one another. At least one shape memory alloy (SMA) member is embedded in the chevron closer to one of the chevron's opposing surfaces and substantially spanning from at least a portion of the chevron's root to the chevron's tip.
Distributed Electric Propulsion Modular Wing Aircraft With Blown Wing And Extreme Flaps For Vtol And/Or Stol Flight
- Washington DC, US David D. North - Williamburg VA, US Robert G. McSwain - Yorktown VA, US Michael D. Patterson - Yorktown VA, US Gregory Howland - Yorktown VA, US Jared S. Fell - Yorktown VA, US Christopher M. Cagle - Yorktown VA, US Xiaofan Fei - Bellevue WA, US Siena K.S. Whiteside - Poquoson VA, US David A. Hare - Smithfield VA, US
An aircraft wing configuration for a vertical or a short take-off and landing aircraft having a plurality of propeller-blown wings mounted at different longitudinal locations along a fuselage of the vertical take-off and landing aircraft, producing two or more lifting surfaces, fixed at a predetermined acute wing angle greater than 0 and substantially less than 90 relative to a horizontal plane, and having a plurality of flaps disposed behind the wings. The configuration has a plurality of propellers distributed in front of the plurality of wings producing two or more lifting surfaces and mounted such that the wings are externally blown by forced airstreams from the propellers. The propellers produce distributed thrust components, and the plurality of flaps are in the forced airstreams of the propellers when one or more of the flaps is in an extended position.