scholarly journals Design of Visual Similation System for Carried-Aircraft Recovery Mode Based on AcoreOS

2019 ◽  
Vol 1237 ◽  
pp. 052028
Author(s):  
He Fan ◽  
Zhang Longjie ◽  
Sun Tao
Keyword(s):  
Aircraft Recovery

scholarly journals Two-Stage Heuristic Algorithm for Aircraft Recovery Problem

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Cheng Zhang
Keyword(s):  
Real Life ◽  
Recovery Model ◽  
Two Stage ◽  
Total Recovery ◽  
Great Loss ◽  
Proposed Model ◽  
Recovery Cost ◽  
Aircraft Recovery ◽  
Test Scenarios ◽  
Recovery Problem

This study focuses on the aircraft recovery problem (ARP). In real-life operations, disruptions always cause schedule failures and make airlines suffer from great loss. Therefore, the main objective of the aircraft recovery problem is to minimize the total recovery cost and solve the problem within reasonable runtimes. An aircraft recovery model (ARM) is proposed herein to formulate the ARP and use feasible line of flights as the basic variables in the model. We define the feasible line of flights (LOFs) as a sequence of flights flown by an aircraft within one day. The number of LOFs exponentially grows with the number of flights. Hence, a two-stage heuristic is proposed to reduce the problem scale. The algorithm integrates a heuristic scoring procedure with an aggregated aircraft recovery model (AARM) to preselect LOFs. The approach is tested on five real-life test scenarios. The computational results show that the proposed model provides a good formulation of the problem and can be solved within reasonable runtimes with the proposed methodology. The two-stage heuristic significantly reduces the number of LOFs after each stage and finally reduces the number of variables and constraints in the aircraft recovery model.

The Characteristics of Frustum of Cone Parachute-Airbag for Aircraft Recovery System

2015 ◽  
Vol 742 ◽  
pp. 608-611
Author(s):  
Wei Hao Xie ◽  
Bin Zhou ◽  
En Xiao Liu ◽  
Yuan Geng Zhang
Keyword(s):  
Mathematical Model ◽  
Future Design ◽  
Air Bags ◽  
Recovery System ◽  
The Future ◽  
Simulation Results ◽  
Aircraft Recovery

The aircraft recovery systems have been drawn more attention for its ability on offering cushioning landing in recent years. However, many previous researches mainly focus on the cylinder or rectangle air bags where the upper surface is orthogonal to the flank side. This kind of airbag will not meet the requisite stability and security because it might be bended by payload under the misalignment forces. In this light, a more stable frustum of cone parachute-airbag system is proposed and the cushioning mathematical model is established. Based on the theories of thermodynamics and mechanics, the expressions of velocity and deceleration are derived. The effects of initial parameters on airbag cushioning properties are analyzed and the simulation results are shown. The results can provide references for the future design of aircraft recovery system.

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