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A Design Comparison of Atmospheric Flight Vehicles for the Exploration of TitanTitan, the largest moon of Saturn, is one of the most scientifically interesting locations in the Solar System. With a very cold atmosphere that is five times as dense as Earth s, and one and a half times the surface pressure, it also provides one of the most aeronautically fascinating environments known to humankind. While this may seem the ideal place to attempt atmospheric flight, many challenges await any vehicle attempting to navigate through it. In addition to these physical challenges, any scientific exploration mission to Titan will most likely have several operational constraints. One difficult constraint is the desire for a global survey of the planet and thus, a long duration flight within the atmosphere. Since many of the scientific measurements that would be unique to a vehicle flying through the atmosphere (as opposed to an orbiting spacecraft) desire near-surface positioning of their associated instruments, the vehicle must also be able to fly within the first scale height of the atmosphere. Another difficult constraint is that interaction with the surface, whether by landing or dropped probe, is also highly desirable from a scientific perspective. Two common atmospheric flight platforms that might be used for this mission are the airplane and airship. Under the assumption of a mission architecture that would involve an orbiting relay spacecraft delivered via aerocapture and an atmospheric flight vehicle delivered via direct entry, designs were developed for both platforms that are unique to Titan. Consequently, after a viable design was achieved for each platform, their advantages and disadvantages were compared. This comparison included such factors as deployment risk, surface interaction capability, mass, and design heritage. When considering all factors, the preferred candidate platform for a global survey of Titan is an airship.
Document ID
20050215093
Acquisition Source
Langley Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Gasbarre, Joseph F. (NASA Langley Research Center Hampton, VA, United States)
Wright, Henry S. (NASA Langley Research Center Hampton, VA, United States)
Lewis, Mark J. (Maryland Univ. College Park, MD, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2005
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
AIAA Paper 2005-6235
Meeting Information
Meeting: AIAA Atmospheric Flight Mechanics Conference and Exhibit
Location: San Francisco, CA
Country: United States
Start Date: August 15, 2005
End Date: August 18, 2005
Funding Number(s)
OTHER: 23-752-50-20
Distribution Limits
Public
Copyright
Public Use Permitted.

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