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1999 OSU Team Orange “Aggie Aquanauts”
Summary
This airplane was designed for the 1998/1999 AIAA/Cessna/ONR Design/Build/Fly contest. The mission objective was to carry the heaviest possible payload consisting of water bottles, over a specified course using multiple sorties. Aircraft were subject to several design constraints including a runway length of 100 ft., span length of 9 ft, motor type, etc. The Aquanaut aircraft finished in second place at the contest, and had the distinction of having the largest payload capacity, and gross weight. As of May 2006, the plane is the largest and heaviest aircraft ever flown by the OSU design lab, tipping the scales at the maximum AMA allowable full gross weight of 55 lb. The airplane used only a single ASTRO-90 electric motor, and was featured in an "Air Scoop" article in the December 1999 issue of Model Airplane News recognizing this feat.
The Airplane The Team Multimedia Contest Results Sponsors
Specifications
Wing:
Wingspan: 9 [ft] (Limited by contest rules)
Wing Area:
Airfoil:
Aspect Ratio:
Fuselage
Length:
Width:
Height:
Propulsion
Powerplant: Single ASTRO-90 2.3:1 gear ratio
Controller: Astro 204D Brush
Fuel: 44 3000mah NiCd Batteries in Series
Propeller: 22x20 in Bolly composite
Maximum Power: >2400 Watts
Weights
Empty Weight (without Batteries): 21 lb
Battery Weight: Approx. 8 lb
Maximum payload weight: 26 lb (12 liters of water)
Gross Weight:
55 lb
Special Features
Servo operated battery cooling doors/drag brake
Wing End plates
Custom designed steel coil spring main gear integrated into wing spar.
Nosewheel Braking
Performance
Takeoff distance at 55 lb: 100 ft.
The Aquanaut design team was led by a Chief Engineer, and divided into three primary groups: Aerodynamics/Stability and Control, Propulsion, and Structures.
Chief Engineer: Mark Freeman
Aerodynamics / Stability and Control
David Jamison (Lead), Todd Greg
Propulsion
Scott St. John (Lead), Brian Clark, Prasad Perera, Roshani Jayasekara, Mohammed Ali
Structures
Mike Blacet (Lead), Amanda Myers, Eng Sheng Ngoi, Eng Miau Chew
Kek-Yau Tan, Kok Leong Choo, Tiong Hoe Lim, Wei Kian Lim
Pilot: Dr. Ron Delahoussaye
Faculty Advisor: Dr. Andrew S. Arena, Jr.
Assistant: Joe Conner
*(The above team roster does not include all people involved in the project)
Team Logo:
Memorable Quotes
"Powered by Thunderchicken"
Team Video
The music video introduces the team, and highlights the development and testing of the aircraft. It is recommended that you right click on the link and use "Save Target as..." to download the video to your computer before playing.
Full size version (640x480) 65MB
Pictures
(Hover cursor over any thumbnail on this page for a description)
Team and Trophy
Construction
Flight test
Contest
Miscellaneous
Final
Presentation PowerPoint Slides
This is the final presentation made by the Aggie Aquanaut team
The mission objective was to carry the heaviest possible payload consisting of water bottles, over a specified course using multiple sorties. Total score is the total amount of water carried in pounds, times the written report score. Some of the more challenging constraints on the designs included:
100 ft short field takeoff distance
Electric motor using NiCd batteries
10 minute maximum flight window
55 pound maximum gross weight
Aircraft must be lifted at the wing tips at full gross weight
OSU Aggie Aquanaut Score Summary
Report Score: 87.83
Flight Score: 71.5 lb of water
Total Score: 6280
Overall Place: 2nd
The following sponsors contributed to the project. The Aggie Aquanaut team greatly appreciates their support, and considers them members of our team. Without their support, the project would not have been possible.
NASA Oklahoma Space Grant Consortium
Advanced Racing Composites