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High Torque, Direct Drive Electric Motor

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2011 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Bear Technologies, LLC
1163 Tricounty Drive Oilville, VA 23129-2222
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2011
Title: High Torque, Direct Drive Electric Motor
Agency: NASA
Contract: NNX11CB28C
Award Amount: $597,439.00


Bear Engineering proposes to advance the development of an innovative high torque, low speed, direct drive motor in order to meet NASA's requirements for such devices. Fundamentally, all electric motors basically work on the same electromagnetic principle: a tangential electromagnetic force attracts the rotor to the stator. Just when the rotor field is closest to the stator field and the electromagnetic attraction is greatest, the power is interrupted and another set of magnetic poles repeats the cycle. Furthermore, the two magnetically attracted elements never make contact, which would otherwise offer the highest force of attraction.The proposed novel motor design, successfully demonstrated at TRL 4 in Phase 1, operates and behaves entirely differently from all other known electric motor designs and is capable of producing incredibly high, direct drive torques at low rotational speeds. Its operational performance is similarto that of a stepper motor with a 1000:1 gearhead attached, but the similarity ends there. The motor is configured such that its length to diameter aspect ratio is opposite that of traditional motors as it has a relatively large diameter and short axial length; this offers all new packaging opportunities. The design also allows for a single, large diameter bearing pair to be used for the motor's output shaft which renders it stiff enough to directly mount the driven elements. The need for additional bearing supports and bearing mounting structure is thus eliminated. By the end of Phase 2,the system will be designed, developed and tested at TRL 6 with Mars environmental conditions.

Principal Investigator:

Thomas Myrick
Principal Investigator

Business Contact:

Karron Myrick
Director of Finance&Bus Dev
Small Business Information at Submission:

Bear Technologies, LLC
2415 Two Turtles Road Maidens, VA 23102-2238

EIN/Tax ID: 271144701
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No