Created on 2016.08.03 162 views
Objectives: The objective of this project was to come up with a design for a rescue mission unmanned rotorcraft that will be able to be dropped out of a C-130 cargo plane, in order to deliver the essential supplies to disaster hit inaccessible and remote areas . For this, a CAD model was designed in CATIA V6 in order to be able to perform weight and C.G calculations and to further use this model to perform structural analysis on ABAQUS for the loads encountered in service. Competition: The rotorcraft was designed for the American Helicopter Society Rotorcraft Design Competition 2016. Designed by: The project GT-Angel was designed by 8 students from Georgia Tech, Atlanta, USA. I am Royal D'Cunha, one of the 8 students and the CAD designer and structural analysis engineer for the project.  AHS proposal: Primary Mission. The rotorcraft shall be capable of carrying a minimum of 500 lbs payload, but teams are encouraged to maximize the payload carrying capability. For the primary mission, assume the payload is bottled water in shrink wrapped cases. The rotorcraft with payload must fit in the cargo hold of a C-130J. The rotorcraft is deployed out of the ramp of the C-130 by any method that does not jeopardize the safety of the C-130 or people on the ground. It is acceptable to assume there is crew assistance onboard the C-130 for release of tie-downs and deployment. Deployment occurs at 15,000 ft and 140 kts. The rotorcraft must arrest its descent and transition to autonomous flight no lower than 1000 ft AGL. The payload must be delivered from a precision no-wind hover at 50 ft AGL by a tether that places the payload on the ground at precise GPS coordinates. The payload shall contact the ground at less than 5 feet per second. The rotorcraft releases the tether and then continues to a base. The time allotted for delivery in hover is 1 minute. With the tether released, the rotorcraft continues for a minimum distance of 50 nm from the delivery point and lands at precisely determined coordinates for later retrieval. For this competition, the mission is assumed to be earthquake relief at high altitude in South America. The disaster location is at 10,000 ft ISA. The base for return is at 4,000 ft ISA. Teams must maximize payload carrying capability. Using multiple rotorcraft that fit inside the C-130J may be considered as an option.
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