Overturning protection control of lunar-planetary lander with semi-active shock absorber

Optimized Fuzzy Logic for Nonlinear Vibration Control of Aircraft Semi-active Shock Absorber with Input Constraint (TECHNICAL NOTE)

Landing impact and runway unevenness have proximate consequence on performance of landing gear system and conduce to discomfort of passengers and reduction of the pilot’s capability to control aircraft. Finally, vibrations caused by them result in structure fatigue. Fuzzy logic controller is used frequently in different applications because of simplicity in design and implementation. In the pre...

Synthetic Vision Displays for Planetary and Lunar Lander Vehicles

Aviation research has demonstrated that Synthetic Vision (SV) technology can substantially enhance situation awareness, reduce pilot workload, improve aviation safety, and promote flight path control precision. SV, and related flight deck technologies are currently being extended for application in planetary exploration vehicles. SV, in particular, holds significant potential for many planetary...

The Gryphon: A Flexible Lunar Lander Design to Support a Semi-Permanent Lunar Outpost

A lunar lander is designed to provide safe, reliable, and continuous access to the lunar surface by the year 2020. The NASA Exploration System Architecture is used to initially define the concept of operations, architecture elements, and overall system requirements. The design evaluates revolutionary concepts and technologies to improve the performance and safety of the lunar lander while minim...

Control and Simulation of an Autonomous Lunar Lander

The Autonomous Lunar Demonstrator (ALDER) project was developed at NASA Ames Research Center to demonstrate autonomous decision making on a Lunar lander spacecraft capable of performing autonomous hop maneuvers. Towards these objectives, a conceptual spacecraft design was created to accomplish the mission, a simulation environment was developed, and a control system was designed and implemented...

Time Optimal Closed - Loop Fuzzy - Control Strategy for Nonlinear Lunar Lander Mission