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Any aerial vehicle that uses aerostatic principles to provide some or all of its lift.

A08 - Analysis of the stability and controllability for the 50m KARI unmanned airship

The purpose of this paper is to analyze the dynamic stability and the controllability of the unmanned airship under development ; the KARI unmanned airship's over-all length of hull is 50m and the maximum diameter is 12.5m. For the analysis, the dynamic model of an airship was defined and aerodynamic derivatives were extracted from the wind tunnel test. The analysis results shows the efficiency of the control inputs such as control surfaces, thrust, tilting angle and differential thrust of motor at the low and high speed regime and the

A07 - Solar - hydrogen energy systems for high altitude platforms - current characteristics and limits

Solar -hydrogen systems were analyzed regarding their usability as energy supply system for high altitude platforms. The main attention was directed to characteristics of current or near term available technology. Specific power weight of photovoltaics, electrolyser, fuel cell and gas tanks and their dependence on operation mode and power range were assessed. A pre-design of a solar-hydrogen energy system was carried out for an airship (volume 580,000 m³) withstanding wind speeds up to »130 km/h.

A06 - Analysis of technical and economical criteria of advanced transport airships

On the basis of structural and parametric analysis and synthesis of LTA as complex engineering systems R&D have been undertaken to outline an overall appearance of advanced airships with high technical and economical indices. We've also analyzed cost indices of advanced transport airships with great payloads. The analysis
implies that expected airship expenses per 1 t×km can be 1.5-3 times lower as compared with airplanes and 7-10 times (at least) over helicopters.

A05 - Control system design, implementation and applications for a semi-autonomous remote piloted airship

Small unmanned airships have traditionally been limited to low-tech applications such as advertising, where endurance and precise control were not necessary. It is suggested that improvements in stability, control
and navigation of these craft could broaden their capabilities to include precise, repeatable inspection and recording. Advancements in battery technology, envelope material, solar cell film and engine efficiency are

A03 - Motion generation on trim trajectories for an autonomous underactuated airship

We are currently studying a small airship that has no metal framework and collapses when deflated. In the first part of this paper, dynamic modeling of small autonomous non rigid airships is presented, using the Newton-Euler approach. This study discusses the motion in 6 degrees of freedom since 6 independent coordinates are necessary to determine the position and orientation of this vehicle. Euler angles are used in the formulation of this model. In the second part of the paper, path planning is introduced. Motion generation for trim trajectories is presented.

A02 - Steam LTA - past, present, and future

Steam as LTA lift gas: its advantages and disadvantages. A ground boiler is required for initial filling. Possibility of mounting insulation upon the envelope. The double envelope concept. Advantages of
size; the square/cube law. The "dribble" and "reboiling" flight modes for a steam balloon. Review of previous proposals: Cayley - Erdmann - Papst - Alcock - Giraud - Domen. Our experiments, and

A01 - Construction and flying a radio controlled lighter than aircraft powered by cycloidal propellers

Cycloidal (Vertical axis) propellers have been used in some form for over a hundred years in various applications, mostly on boats. The flexibility of directional control is it’s main advantage, a simple rotational change of the blades and the direction is changed.

Shed One Cardington Refurbishment Starts

The refurbishment of Shed One at Cardington, Bedfordshire, UK commenced at the begining of August. The shed roof will be replaced first. The entire project, which will see all new cladding installed, is expcected to take between 18 and 24 months.

Look for an article on the refurbishment in the December issue of AIRSHIP.

22 to 24 August 2012 - 2nd Cargo Airships for Northern Operations workshop (UPDATED).

The University of Alaska, Fairbanks in collaboration with NASA Ames Research Center and ISO Polar will be holding a follow-up workshop to the 2011 Alaska Cargo Airship workshop between 22 and 24 August 2012, and will be assessing the applications for cargo airships for northern communities.

The human cost of current air freight Transport in Northern Canada

News article on the impact of current air freight costs for inhabitants of remote Canadian communities.




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