Aircraft Engineering and Aerospace Technology: Volume 87 Issue 5

Closed-loop atmospheric ascent guidance based on finite element method

Baogang Lu, Naigang Cui, Yu Fu, Wenzhao Shan, Xiaohua Chang

The purpose of this paper is to study the closed-loop guidance algorithm for launch vehicles in an atmospheric ascent phase and present a numerical trajectory reconstruction…

Estimation of flight modes with Hilbert-Huang transform

Seyed Amin Bagherzadeh, Mahdi Sabzehparvar

This paper aims to present a new method for identification of some flight modes, including natural and non-standard modes, and extraction of their characteristics, directly from…

Time-stepping free-wake methodology for rotor flow field simulation in ground effect

Ji Xin, Renliang Chen, Pan Li

The purpose of this paper is to provide an approach to predict rotor thrust and hub moments under in ground effect (IGE) in transient flight. Target of the research is developing…

Satellite rendezvous using differential aerodynamic forces under J2 perturbation

Xiaowei Shao, Mingxuan Song, Dexin Zhang, Ran Sun

The purpose of this paper is to present a method to conduct small satellite rendezvous mission by using the differential aerodynamic forces under J2 perturbation in low earth…

Effects of biofuels properties on aircraft engine performance

Nurul Musfirah Mazlan, Mark Savill, Timos Kipouros

– The purpose of this paper is to examine the effects of heat capacity and density of biofuels on aircraft engine performance indicated by thrust and fuel consumption.

Numerical simulation of surface porosity in presence of wing-vortex interaction

Elteyeb Eljack, Ibraheem AlQadi, Mahmood Khalid

The purpose of this paper is to identifying ways to reduce the effects of wing-vortex interaction by applying surface porosity on selected areas of the exposed surface. A number…

Impact angle and impact velocity constrained terminal guidance for stationary target

Hao Zhou, Tawfiqur Rahman, Wanchun Chen

– The purpose of this paper is to present a novel guidance law for hypervelocity descent to a stationary target such that the impact angle and impact velocity can be constrained.

Spacecraft autonomous navigation using multiple model adaptive estimator

Kai Xiong, Chunling Wei, Liangdong Liu

The purpose of this paper is to present a variable structure multiple model adaptive estimator (VSMMAE) for liaison navigation system. Liaison navigation is an autonomous…

A new paradigm for star grain design and optimization

Amer F Rafique, Qasim Zeeshan, Ali Kamran, Liang Guozhu

The paper aims to extend the knowledge base for design and optimization of Star grain which is well known for its simplicity, reliability and efficiency. Star grain configuration…

Close approach analysis of space objects and estimation of satellite-debris collision probability

M. Navabi, R. Hamrah

The purpose of this paper is to perform a comparative study of two propagation models and a prediction of proximity distances among the space objects based on the two-line element…

GSA-based optimal backstepping controller with a fuzzy compensator for robust control of an autonomous quadrotor UAV

Mohd Ariffanan Mohd Basri, Abdul Rashid Husain, Kumeresan A. Danapalasingam

The purpose of this paper is to propose a new approach for robust control of an autonomous quadrotor unmanned aerial vehicle (UAV) in automatic take-off, hovering and landing…

Performances of ionospheric delays for spaceborne GPS

Xia Yang, Jiancheng Li

The purpose of this paper is to discuss and evaluate the performances of the ionospheric delays for spaceborne global positioning system (GPS) receivers with changing altitudes…