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Scalable Gravity Offload System

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2011 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Astrobotic Technology, Inc.
PA Pittsburgh, PA 15222-4613
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2011
Title: Scalable Gravity Offload System
Agency: NASA
Contract: NNX11CC65C
Award Amount: $599,259.00


A scalable gravity offload device simulates reduced gravity for the testing of various surface system elements such as mobile robots, excavators, habitats, and deployables in a relevant environment. The device is capable of simulating reduced gravity over an arbitrary terrain including such features as slopes, obstacles, and varying surface concavity. The device consists of a linear movement system, a 2 degree-of-freedom manipulator, a passive force application mechanism, and a position tracking mechanism. The manipulator travels along the linear movement system and is positioned perpendicular to the linear movement system's direction of travel. The result is a rectangular working area whereby the gravity offload device can simulate reduced gravity in the area defined by the length of the linear movement system by the width (reach) of the 2 degree-of-freedom manipulator. The force application mechanism is principled upon precision maintenance of a pressure in an air cylinder. Precision regulation of supply pressure enables constant force over the throw of the air cylinder. Varying the regulator supply pressure to the air cylinder(s) modifies the force experienced by the test article and therefore enables a gravity offload device to simulate a range of gravity fields proportional to the ability to regulate pressure.

Principal Investigator:

William ". Whittaker
Principal Investigator

Business Contact:

David Gump
Business Official
Small Business Information at Submission:

Astrobotic Technology, Inc.
PA Pittsburgh, PA 15213-3524

EIN/Tax ID: 262383764
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
Carnegie Mellon University
5000 Forbes Avenue
Pittsburgh, PA 15213-3815
Contact: Kim Basile