Landing from a jump implies proper positioning of the lower limb segments and the generation of an adequate muscular force to cope with the imminent collision with the ground. This study assesses how a hypogravitational environment affects the control of landing after a countermovement jump (CMJ). Eight participants performed submaximal CMJs on Earth (1-g condition) and in a weightlessness envi...

This paper studies the multiple runway aircraft landing problem. The aim is to schedule arriving aircraft to available runways at the airport. Landing times lie within predefined time windows and safety separation constraints between two successive landings must be satisfied. We propose a new approach for solving the problem. The method is based on an approximation of the separation time matrix...

Abstract The capability of performing vertical landing accurately and safely is great concern for reusable rockets, some which might carry manned capsules. According to previous technologies, the rocket needs land on a drone ship that has limited size 70 m × 50 m, whereas capsule soil terrain be oblique. Currently, there been various research supporting processes rockets Regardless disparity su...

Landing site selection is a compromise between safety concerns associated with the site’s terrain and scientific interest. Therefore, technologies enabling pinpoint landing (sub-100 m accuracies) on the surface of Mars are of interest to increase the number of accessible sites for in-situ research as well as allow placement of vehicles nearby prepositioned assets. A survey of various guidance, ...

This paper describes a set of experiments involving small helicopters landing automated landing at unusual attitudes. By leveraging the increased agility of small air vehicles, we show that it is possible to automatically land a small helicopter on surfaces pitched at angles up to 60 degrees. Such maneuvers require considerable agility from the vehicle and its avionics system, and they pose sig...

To increase safety and land near pre-deployed resources, future NASA missions to the moon will require precision landing. A LIDAR-based terrain relative navigation (TRN) approach can achieve precision landing under any lighting conditions. This paper presents results from processing flash lidar and laser altimeter field test data that show LIDAR TRN can obtain position estimates less than 90m w...

Unmanned planetary landers to date have landed "blind"; that is, without the benefit of onboard landing hazard detection and avoidance systems. This constrains landing site selection to very benign terrain, which in turn constrains the scientific agenda of missions. The state of the art Entry, Descent, and Landing (EDL) technology can land a spacecraft on Mars somewhere within a very large land...

The Center-TRACON Automation System (CTAS) is a collection of planning and control software functions that generate landing schedules and advisories to assist air traac controllers in handling traac in the en-route and terminal areas. In this paper, we propose a formal safety analysis methodology to determine the correctness of CTAS with respect to safety. Four large classes of safety notions a...

Introduction: This abstract describes the continuation of work initially reported last year [1] on topographic mapping and roughness analysis of candidate Mars Exploration Rover (MER) landing sites using high-resolution images from the Mars Global Surveyor Mars Orbiter Camera Narrow-Angle subsystem (MGS MOC-NA; [2]). The main goal of this work at present is to contribute to assessments of wheth...

It is natural to rely on experiences from the aviation industry when developing safety-critical systems for automotive applications. In the aviation industry for several decades programmable systems have been used for flight control, aircraft engine control, landing gear control etc.. The safety and reliability requirements of these systems are comparable with steer-by-wire or brake-by-wire sys...