USA flag logo/image

An Official Website of the United States Government

Trajectory Design to Benefit Trajectory-Based Surface Operations

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2010 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Optimal Synthesis, Inc.
CA Los Altos, CA 94022-2777
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2010
Title: Trajectory Design to Benefit Trajectory-Based Surface Operations
Agency: NASA
Contract: NNX10CA05C
Award Amount: $600,000.00


Trajectory-based operations constitute a key mechanism considered by the Joint Planning and Development Office (JPDO) for managing traffic in high-density or high-complexity airspace in the Next-Generation Air Transportation System (NextGen). With this concept applied to surface operations at major airports, NASA's NextGen-Airportal Project is exploring the use of surface 4-dimensional (4D) trajectories, which use required times of arrival (RTAs) at selected locations along the route. Observing these RTAs as constraints along the taxi route, the flight still has many degrees of freedom in adjusting its state profiles (i.e., position, velocity, etc. as functions of time) to achieve the timing constraints. This research will investigate whether and how these degrees of freedom in trajectory control may be used to achieve desirable behaviors for the taxi operations. Previous research has applied the trajectory control freedom to assure passenger comfort by keeping the accelerations and decelerations within pre-specified limits, and yet there is still untapped flexibility in designing the trajectories. The proposed research will explore this trajectory design problem to achieve additional desirable behaviors, beginning with the consideration of fuel burn, emissions, and noise. A flight-deck automation experimental prototype will provide the platform for simulating the designs, augmented by models developed to evaluate environmental benefits. The findings will benefit future designs of flight-deck automation systems, as well as tower automation systems which rely on accurate understanding of the flight deck's operational behaviors to plan efficient and safe operations for the entire surface traffic.

Principal Investigator:

Victor Cheng
Principal Investigator

Business Contact:

Victor H. Cheng
Vice President
Small Business Information at Submission:

Optimal Synthesis, Inc.
95 First Street, Suite 240 Los Altos, CA 94022

EIN/Tax ID: 770484755
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No