Variable Delay Testing Using ONE NASA / TM — 2002 - 211802

NASA / TM - 2002 - 211631 Flow and Noise Control : Review Assessment of Future Directions and

Free Maneuvering, Trajectory Negotiation, and Self-spacing Concepts in Distributed Air-ground Traffic Management

Simulation research on three DAG-TM CEs— CE 5: En Route Free Maneuvering, CE 6: En Route Trajectory Negotiation, and CE 11: Terminal Arrival Self-Spacing—began in 2001 at the NASA Ames, Glenn, and Langley Research Centers [3-5]. It will continue through 2004, with regular simulation evaluations of the developing concepts, tools and procedures. Related prior research is presented in [59]. This p...

Nasa Langley and Nlr Research of Distributed Air/ground Traffic Management

Distributed Air/Ground Traffic Management (DAGTM) is a concept of future air traffic operations that proposes to distribute information, decision-making authority, and responsibility among flight crews, the air traffic service provider, and aeronautical operational control organizations. This paper provides an overview and status of DAG-TM research at NASA Langley Research Center and the Nation...

Nasa Technical Memorandum Nasa Tm-77435 Shearing Stability of Lubricants

Variable Delay Testing Using One

This paper investigates the effect of long and changing propagation delays on the performance of TCP file transfers. Tests are performed with machines that emulate communication from a low/medium-earth satellite to Earth by way of a geosynchronous satellite. As a result of these tests, we find that TCP is fairly robust to varying delays given a high enough TCP timer granularity. However, perfor...