Version 35.1 by Coleman Benson on 2018/07/06 16:14
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1 1. [[MES - Arm Assembly>>doc:.MES - Arms.WebHome]]
2 1. [[MES - Center Frame Assembly>>doc:.MES - Center Frame.WebHome]]
3 1. [[MES - Landing Gear Assembly>>doc:.MES - Landing.WebHome]]
4 1. [[MES - Quick Release Assembly>>doc:.MES - Quick Release.WebHome]]
5 1. [[MES - Final Assembly>>doc:.MES - Final Assembly.WebHome]]
6 1. [[MES - Arm Clip Positions>>doc:.MES - Arm Clip Positions.WebHome]]
7
8 The Multirotor Erector Set (MES) - Reconfigurable Frame is an all-in-one frame designed to allow the user to easily experiment with a variety of different multirotor designs, without having to invest in a variety of custom frames. The frame is based on the M.E.S. system which uses aluminum tubing clamps, G10 composite plates and carbon fiber tubing. A wide variety of different designs can be created using this single frame system and each can vary in terms of arm length, motor configurations, accessories and more.
9
10 == Applications ==
11
12 * UAV / drone / multirotor education, development & experimentation
13 * Sensor experimentation
14 * Design & payload optimization
15
16 == Features ==
17
18 * Reconfigurable center frame
19 * Mounting for one or two batteries
20 * Selection of different carbon fiber tube lengths
21 * Removable, quick release landing gear
22 * Variety of multi-purpose mounting mounts
23 * Quick release folding arms and removable landing gear
24 * Side mounted ESC for easy access
25 * Wiring within tubing
26
27 == What's Included ==
28
29 * G10 composite (non-conductive) parts for complete frame assembly
30 * Anodized (orange) aluminum tubing clamps
31 * Carbon fiber tubes
32 * Hardware (screws, standoffs, grommets, bearings, foam)
33
34 == What's Needed ==
35
36 * Brushless DC (BLDC) motors (4 to 12 depending on design) and corresponding mounting screws
37 * Electronic Speed Controllers (ESCs) compatible with BLDC motors selected
38 * Flight controller (Lynxmotion Quadrino Nano suggested)
39 * Power Distribution (Lynxmotion Power Distribution Module suggested)
40 * Battery compatible with BLDC motors (one or two can be mounted)
41 * Remote Control (RC) system with minimum 4ch and receiver
42 * Optional: Gimbal; Video transmitter / receiver; Camera; Sensors;
43
44 == Specifications ==
45
46 * Weight (to be calculated for each configuration)
47 ** Center section (includes all G10 parts, tubing clamps and hardware; no electronics):
48 ** Motor mount (includes G10 parts, tubing clamps and hardware)
49 ** Landing gear connection (includes G10 parts, tubing clamps and hardware)
50 ** Carbon fiber tubing: 300mm =
51 ** Battery mount (includes G10 parts, tubing clamps and hardware):
52 * Size:
53 ** Center section:
54 ** Motor mount:
55 ** Landing gear connection:
56 ** Carbon fiber tubing: 16mm OD, 300mm long
57 * Compatibility
58 ** BLDC motor sizes:
59 ** Propeller sizes:
60 ** Flight controller:
61 ** Gimbal:
62 ** Sensors:
63 ** Mechanics
64 *** Tubing sections are compatible with Lynxmotion M.E.S. tubing clamps
65 *** Carbon fiber tubes are standard 16mm (OD)
66 *** Lynxmotion S.E.S. pattern
67
68 (% class="wikigeneratedid" %)
69 == Design Examples ==
70
71 The following designs are examples of what is possible with the MES system. These are all included in the assembly guide and allow you to become familiar with the system. Spare parts are included to allow you to create alternative designs, and additional hardware can be purchased separately.
72
73 |(% style="width:300px" %)**//CAD Image//**|//**Title / Description**//
74 |(% style="width:250px" %)(((
75 (% style="text-align:center" %)
76 [[image:MES-F-QUADX-ISO.png||width="300"]]
77
78
79 )))|(((
80 **X4 Quadcopter**
81
82 The X4 quadcopter design incorporates folding arms and removable landing gear. There is a motor mounted to each of the four arms. Wiring is internal.
83 )))
84 |(% style="width:250px" %)(((
85 (% style="text-align:center" %)
86 [[image:MES-F-X8-ISO.png||width="250"]]
87
88
89 )))|(((
90 **X8 Quadcopter**
91
92 The X4 quadcopter design incorporates folding arms and removable landing gear. There is a motor mounted to both the top and the bottom of each of the four arms. Wiring is internal.
93 )))
94 |(% style="width:250px" %)(((
95 (% style="text-align:center" %)
96 [[image:MES-F-Y4-ISO.png||width="250"]]
97
98
99 )))|(((
100 **Y4 Tri Arms**
101
102 The Y4 design design incorporates folding arms and removable landing gear. There is one mounted to the front arms and two motors mounted to the center rear arm.
103 )))
104 |(% style="width:250px" %)(((
105 (% style="text-align:center" %)
106 [[image:MES-F-Y6-ISO.png||width="250"]]
107
108
109 )))|(((
110 **Y6 Tri Arms**
111
112 The Y6 design includes two folding arms, each with a motor, and a rear fixed arm with a motor mounted to the top and bottom of the arm. Wiring is internal.
113 )))
114 |(% style="width:250px" %)(((
115 (% style="text-align:center" %)
116 [[image:MES-F-HEX6-ISO.png||width="250"]]
117
118
119 )))|(((
120 **HEX 6 Hexacopter**
121
122 The H6 hexacopter design incorporates folding arms and removable landing gear. There is a motor mounted to each of the six arms,. Wiring is internal.
123 )))
124 |(% style="width:250px" %)(((
125 (% style="text-align:center" %)
126 [[image:ES-F-HEX12-ISO.png||width="250"]]
127
128
129 )))|(((
130 **HEX 12 Hexacopter**
131
132 The H12 hexacopter design incorporates folding arms and removable landing gear. There is a motor mounted to both the top and bottom of each of the six arms. Wiring is internal. This design requires independent control of 12 motors, which is not supported by MultiWii /
133 )))
134
135 == Design Guide ==
136
137 This section covers only the basics of how to select additional components to complete the MES frame.
138
139 === Accessories ===
140
141 The types of accessories to connect to the frame are at the discretion of the designer. Components can be added above the frame or below, and a universal mounting plate is included. The length of the
142
143 === Battery ===
144
145 The MES frame supports using either one centrally mounted battery (below or above the main frame) or two batteries mounted on either the landing gear tubes or above the center plate. In a two battery configuration, we strongly recommend using identical batteries to ensure weight balance and uniform discharge. Note that both batteries should be fully charged before use, and your method of power distribution should support a two battery configuration. The battery is held in place by rubber foam and velcro straps, which supports a wide variety of different sizes. The battery's voltage should ideally match that of the BLDC motors selected, and the continuous discharge current rating ('C' rating) should be above the sum of the maximum current consumption of the motors used.
146
147 === Motor, ESC, Propeller ===
148
149 In order to help determine the type and number of BLDC motors to use in a specific configuration, we propose following the steps below:
150
151 1. Calculate the total weight of the multirotor drone based on the desired configuration by adding the weight of all known parts (frame, flight controller, power distribution)
152 1. Add the total weight of any larger accessories such as a camera, gimbal system, video transmitter, heavier sensors etc. to the previous total.
153 1. Estimate the weight of unknown parts (motors, battery) and add it to the total:
154 11. Motor:
155 11. Battery:
156 11. The weight of the propellers, ESCs, receiver and lightweight sensors tend to have a minimal impact on the total.
157 1. Multiply the total weight obtained by two*, and divide this new value by the number of motors to be used. This will give you an estimate of the maximum thrust needed per motor + propeller combination
158 1. Select a motor + propeller combination which provides the thrust calculated in the previous step.
159 1. Adjust the total weight calculated in the first step using the weight of the motors to re-calculate the total thrust needed per motor.
160 1. Compare this new total to the maximum thrust which the motor can provide. If the motor's actual maximum thrust is less than around 90% of the thrust needed, find a new motor.
161
162 ~* Multiplying the total weight of the drone by a factor of two is an estimate to provide sufficient thrust needed for basic aerial maneuvers and acceleration. For more acrobatic flight, this multiplication factor should be higher. 
163
164 Should you wish to experiment with a wide variety of different configurations using a single type of motor, ESC and propeller, the following specs are suggested. Note that :
165
166 * Motor thrust:
167 * ESC:
168 * Propeller:
169 * Battery:
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