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ELAS, Electric Lift Augmenting Slats

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: 80NSSC22CA035
Agency Tracking Number: 205017
Amount: $750,000.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: T15
Solicitation Number: STTR_20_P2
Timeline
Solicitation Year: 2020
Award Year: 2022
Award Start Date (Proposal Award Date): 2022-03-24
Award End Date (Contract End Date): 2024-03-23
Small Business Information
1918 South 16th Avenue
Yakma, WA 98903-1212
United States
DUNS: 153800131
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 David Ullman
 (541) 760-2338
 ullman@davidullman.com
Business Contact
 Pat Horgan
Phone: (509) 895-9465
Email: pat.horgan@cubcrafters.com
Research Institution
 Oklahoma State University-Main Campus
 
107 Whitehurst
Stillwater, OK 74078-1010
United States

 Federally Funded R&D Center (FFRDC)
Abstract

Electric Lift Augmenting Slats (ELAS) is a combination of leading-edge slats and a series of small electric ducted fans (EDFs) accelerating the air in the gap between the slat and the main body wing airfoil. The ELAS Concept provides: JATO-like (Jet Assisted Takeoff) electric-powered boost on takeoff and climb out, descent and landing speed reduction, steeper approach angles, and improved low-speed margins and handling qualities. ELAS can be added to an existing airframe or built into the wings as original equipment. It can even be designed as retractable when not in use. Rather than the EDFs being used to solely add thrust, ELAS also provides a dramatic increase in lift by increasing the speed of the air over the top surface of the wing, a form of upper-surface-blowing.This work is built on earlier successful projects combined with recent advances in distributed electric propulsion.nbsp; The distributed, small electric ducted fans alter the airflow over the wing in ways not possible with two internal combustion engines (the Custer channel-wing) or multiple large turbines (the Boeing YC-14 and the NASA QSRA).nbsp;Further, ELAS can provide improved low-speed aircraft controlnbsp;through both the increase in maximum lift and stall angle, and differential power distribution. Command of the power distribution has the potential to reduce loss-of-control (LoC) during critical low-speed periods and provide improved handling qualities during gusts.nbsp;While there is a big push to develop eVTOL aircraft, ELAS offers a much shorter path to near-eVTOL capability. This claim is supported by the following Phase I findings: 1) Anbsp;variety of small aircraft equipped with ELAS can takeoff and approach/land with near-helicopter-like profiles. 2)nbsp;Can be attached to existing aircraft or built into new aircraft:nbsp;lower acquisition and recurring costs than eVTOL. 3)nbsp;50%-100% more range with more payload than comparable eVTOL. 4) next-gen battery technology is not required. 5) Uses Off-The-Shelf hardware.

* Information listed above is at the time of submission. *

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