After analysing the main technical performance of the new type flyer, this article indicated that the new type flyer at high speed had been improved in such aspects as deformation, power consume, air stream disturb and vibration.

It also analyses the major problems which result in cable breakdown, such as the gas interference and the infiltration of the gas into insulating layer of the cable, and proposes some methods to solve these problems.

Expermental investigation on aerodynamic interference of near space tandem airship

The aerodynamic interference was considered.

Coupled body panel model with free wake model,an aerodynamic interference model of rotor-body combination is established.

An analytical method for aerodynamic interactions of twin rotors based upon free-vortex and lifting-surface models;

On Navier-Stokes equation-based aerodynamic interaction between rotor blades in hover phase;

An empirical algorithm of aerodynamic interaction effects of rotor wake on fuselage for helicopter based on model experiments;

With the converter characteristics,this text analyzed possible electrical interference forms of frequency control system in practical use,including external environment interference of converter,converter work interference on other equipment,etc.

The paper analyzes main reason of a general-purpose frequency inverter because the inverter itself and its peripheral equipment cause electrical interference.