Dynamic Stability Analysis of a Tethered Aerostat

Rajani, Ashok; Pant, Rajkumar S.; Sudhakar, K.

doi:10.2514/6.2009-2872

Cited by 4 publications

(3 citation statements)

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“…Experience is growing around the world with both tethered and free-flying Lighter Than Air (LTA) platforms, which include balloons, aerostats, rigid inflatable airships and stratospheric platforms. Applications include aerial imaging [13], remote sensing [14], radar [15] visual and infrared monitoring of international borders [16], [17], airspace and movement on the ground , traffic monitoring and control [18], synthetic aperture astronomical telescopes [19]- [21], relaying electromagnetic signals, wind power [22], [23] from the jet stream, and solar power collection.…”

Section: Tethered Aerostats and Waveguides For Power Beamingmentioning

confidence: 99%

Antenna Considerations for Retail Beamed Power Delivery in India

Komerath

Kar

Pant

2011

2011 International Symposium on Electronic System Design

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Past work has shown the relevance of retail electric power delivery in developing areas where the market for micro devices outpaces the power grid infrastructure. Antenna size requirements imply logically that frequencies above 100 GHz must be used for viable power transmission. A power beaming architecture based on near-millimeter waves can enable power exchange at intercontinental, littoral and local levels, enabling participation of micro renewable generators and rural populations. Building on a survey of technological developments, the paper starts the requirements definition for millimeter wave power antenna design. Lighter than air aerostat platforms enable longer horizontal paths to be shifted above the dense, moist lower atmosphere, with vertical transmission between the ground and the aerostat occurring through millimeter waveguides built into tethers. Ground antennae may be integrated with solar photovoltaic panels for multiple uses. The option of transmitting power from local micro generators rather than storing locally, favors the use of technology-intensive mass-produced solid state devices that integrate conversion, transmission, reception and phase variation for beam pointing.

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Section: Tethered Aerostats and Waveguides For Power Beamingmentioning

confidence: 99%

Antenna Considerations for Retail Beamed Power Delivery in India

Komerath

Kar

Pant

2011

2011 International Symposium on Electronic System Design

Self Cite

View full text Add to dashboard Cite

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“…al. [1][2][3][4][5]. The work on initial sizing and conceptual design has been reported by Gupta et.…”

Section: Introductionmentioning

confidence: 99%

“…al. [3][4] have done commendable work on dynamic stability of aerostats. The most of the work reported in this paper is based on the reports available on stability analysis and trend study of tethered aerostat [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Parametric Trend Study During Stability Analysis of a Tethered Aerostat

Rakesh Kumar,

Shashank Srivastava,

A.K. Ghosh

et al. 2023

joast

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The paper presents the longitudinal and lateral stability analysis of an aerostat tethered in a steady wind. The parametric trend study showing the effect of variation of different parameters on longitudinal stability boundaries of an aerostat has also been presented. In contrast with the conventional airplane, the equations of motion for the tethered aerostat included buoyancy forces, apparent mass terms and static forces resulting from the tether cable. The analysis consisted of mathematical modeling and its use to compute the stability characteristics for the longitudinal and lateral cases followed by the parametric trend study carried out by varying the dimensional, aerodynamic and other parameters of the aerostat for the longitudinal case. Graphical results show that the aerostat is stable for longitudinal as well as lateral case. The parametric trend study presented, thereafter, suggested that the judicious and feasible choice of various aerostat parameters could be utilized to design a new aerostat that can remain stable for wide range of wind velocities.

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Effect of Geometrical Parameters of a Tethered Aerostat on Longitudinal Stability Boundaries

Kumar

Ghosh

2022

Lecture Notes in Mechanical Engineering

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Dynamic Stability Analysis of a Tethered Aerostat

Cited by 4 publications

References 0 publications

Antenna Considerations for Retail Beamed Power Delivery in India

Antenna Considerations for Retail Beamed Power Delivery in India

Parametric Trend Study During Stability Analysis of a Tethered Aerostat

Effect of Geometrical Parameters of a Tethered Aerostat on Longitudinal Stability Boundaries

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