Voting Result: 2.35509430712
Overview for LM First Aid
The main idea of my design is to create an aircraft which can carry the intended payload in three different ways.
In the first mode the aircraft has conventional wings plus four rotors for vertical takeoff.
In second mode front and rear wings can be detached and the aircraft will be converted to a quadcopter which can carry the payload with more weight duo to lack of wings.
In third mode four rotors and their frame can be detached from the aircraft to create a conventional airplane which can also carry a payload with higher weight duo to a lack of rotors.
For each circumstance we can choose the most proper mode to achieve the highest payload weight for any specific range and ground terrain.
The batteries are packed at the rear of the fuselage to bring the center of gravity of the aircraft close to the center of payload.
Frame of the aircraft should be made from hollow carbon fiber rods to reduce the weight.
Payload and frame of the rotors can be attached to the main frame by a screw-like mechanism to provide reliable and easy to work structure.
Payload dimensions are 450x350x200mm.
Payload structure has external frame in its lower side part. This frame provides four contact places to allow attaching payload to the main frame of the aircraft by means of aviation grade screws.
Four rotors and their frame have a similar joining mechanism and as mentioned previously they can be detached from the aircraft. As can be seen in the above pictures, payload joining-place to the main frame is under the frame of the rotors and therefore to detach the rotors we must first detach the payload.
Batteries consists of 14 cells of “ABLPA655275HG” from AMICELL manufacturer with rating voltage of 3.7 V, 23880 mAh capacity and each cell has 364g weights. Thanks to this high specific energy, total weight of the batteries is 5.096 Kg.