Flight Power Scaling of Airplanes, Airships, and Helicopters: Application to Planetary Exploration

Lorenz, R. D.

doi:10.2514/2.2769

Cited by 31 publications

(6 citation statements)

References 5 publications

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“…Although balloons can achieve large-scale mobility, the wind field limits the range of locations that can be visited by a single vehicle. Airships are efficient at very low speeds, but at speeds much larger than expected near-surface winds (∼1 m/s) they require more propulsive power in the low-gravity Titan environment than do airplanes [73].…”

Section: Aviatrmentioning

confidence: 97%

“…1 Both of these proved impractical for a planetary mission to Titan in that their development costs would be very large relative to their benefit for any individual Titan mission. In a strategic paper about the overall power requirements for flight as a function of vehicle mass, Lorenz [73] suggested that "a small (20-100 kg) unmanned aerial vehicle (UAV) would be the next logical step in Titan exploration after the Cassini mission", and proceeded to show the expected wing loading and power requirements for such an airplane. As part of the 2007 flagship study, Lorenz [75] considered a small, 1-kg battery-powered airplane that could be launched from that study's lander.…”

Section: Historymentioning

confidence: 99%

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AVIATR—Aerial Vehicle for In-situ and Airborne Titan Reconnaissance

et al. 2011

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We describe a mission concept for a stand-alone Titan airplane mission: Aerial Vehicle for In-situ and Airborne Titan Reconnaissance (AVI-ATR). With independent delivery and direct-to-Earth communications, AVI-ATR could contribute to Titan science either alone or as part of a sustained Titan Exploration Program. As a focused mission, AVIATR as we have envisioned it would concentrate on the science that an airplane can do best: exploration of Titan's global diversity. We focus on surface geology/hydrology and lower-atmospheric structure and dynamics. With a carefully chosen set of seven instruments-2 near-IR cameras, 1 near-IR spectrometer, a RADAR altimeter, an atmospheric structure suite, a haze sensor, and a raindrop detector-AVIATR could accomplish a significant subset of the scientific objectives of the aerial element of flagship studies. The AVIATR spacecraft stack is composed of a Space Vehicle (SV) for cruise, an Entry Vehicle (EV) for entry and descent, and the Air Vehicle (AV) to fly in Titan's atmosphere. Using an Earth-Jupiter gravity assist trajectory delivers the spacecraft to Titan in 7.5 years, after which the AVIATR AV would operate for a 1-Earthyear nominal mission. We propose a novel 'gravity battery' climb-then-glide strategy to store energy for optimal use during telecommunications sessions. We would optimize our science by using the flexibility of the airplane platform, generating context data and stereo pairs by flying and banking the AV instead

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Section: Aviatrmentioning

confidence: 97%

Section: Historymentioning

confidence: 99%

AVIATR—Aerial Vehicle for In-situ and Airborne Titan Reconnaissance

et al. 2011

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“…7,20 The project implementation is due in 2018. 24 Regarding Titan, numerous projects of atmospheric flight vehicles have been proposed 3,10,11,[25][26][27] but the most developed one is the AVIATR (Aerial Vehicle of In-Situ and Airborne Titan Reconnaissance) project developed by Barnes with the objective of studying Titan's geography and atmosphere. It is the most representative design of Titan exploration vehicles as it has reached the furthest stage of development.…”

Section: Uav Projectsmentioning

confidence: 99%

Optimizing multidisciplinary scaled tests in terrestrial atmosphere for extraterrestrial unmanned aerial vehicle missions

Moreno

Jarzabek

González

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part G:

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Unmanned aerial vehicles are a valid tool for exploring celestial objects that have atmosphere. The design process of these vehicles includes numerical analysis phase, which is then followed by an experimental flight test campaign in order to validate and refine the design. In terrestrial conditions, it is impossible to use the full size prototype and recreate all the conditions of extraterrestrial flight. The only option is to use a scaled model maintaining certain similarity parameters to the prototype. This would, however, not reproduce the global multidisciplinary behavior in terrestrial conditions. Alternatively, relaxing similarity constraints enables reproducing the global multidisciplinary behavior but introduces known and measurable similarity differences. The objective of this study is to provide a methodology for designing a relaxed similarity scaled model for terrestrial multidisciplinary tests for any extraterrestrial unmanned aerial vehicle. The methodology is then applied to a case scenario in order to verify its validity.

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“…The first one, is a pure experimental procedure which consists on collecting data in a wind tunnel, the second one, is an analytical procedure based on geometric quantities procedure [89,113,120,131,135,137,139,149]. These coefficients may be calculated in two different ways.…”

Section: Aerodynamic Tensormentioning

confidence: 99%

Lighter than Air Robots

Sebbane

2012

Intelligent Systems, Control and Automation: Science and Engineering

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No part of this work may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording or otherwise, without written permission from the Publisher, with the exception of any material supplied specifically for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work.Cover design: VTeX UAB, Lithuania

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Flight Power Scaling of Airplanes, Airships, and Helicopters: Application to Planetary Exploration

Cited by 31 publications

References 5 publications

AVIATR—Aerial Vehicle for In-situ and Airborne Titan Reconnaissance

AVIATR—Aerial Vehicle for In-situ and Airborne Titan Reconnaissance

Optimizing multidisciplinary scaled tests in terrestrial atmosphere for extraterrestrial unmanned aerial vehicle missions

Lighter than Air Robots

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