1. GENERAL
1.1 Introduction
This Remote Vehicle Flight Manual has been prepared to describe the complete operation of the airframe and flight control systems of the Meadowhawk remotely piloted aerial vehicle, and the normal maintenance of those items. Do not operate the Meadowhawk without reading and understanding this manual.
This manual is not a substitute for adequate flight training. Training requirements can vary when operating in different countries or under different flight conditions. Always consult local regulations before flying the Meadowhawk. In areas where there are no flight training requirements, it is the sole determination of the pilot-in-command as to whether he or she has the appropriate level of training or experience for a given flight. Always set and adhere to personal minimums and fly within your own capabilities.
1.2 Warnings, Cautions and Notes
The following definitions apply to warnings, cautions, and notes used in this Remote Aircraft Flight manual:
WARNING
Disregarding the following instructions leads to an immediate or severe deterioration of flight safety and hazardous situations, including such resulting in personal injury and damage to property.
CAUTION
Disregarding the following instructions leads to a serious or long term deterioration of flight safety
NOTE
Draws attention to any special item not directly related to safety but which is important or unusual.
1.3 Description
The Union Robotics® Meadowhawk 2 is a professional multi-rotor aircraft designed for critical infrastructure inspections, search and rescue operations, and first responder applications.
Manufactured by:
Union Robotics®
3800 SW Cedar Hills Blvd Suite 260, Beaverton, OR 97005
support@union-robotics.com
1-888-864-6680
1.3.1 Three-View-Drawing of the sUAS
1.3.2 Dimensions
Feature
Measurement
Width Without Props
17.7 in / 450 mm
Width With Props
33 in / 838 mm
Height
7.9 in / 200mm
1.3.3 Motors | Propellers | Electronic Speed Controls
Motors
Number of Motors
4
Motor Manufacture
Union Corp.
Motor Model Number
URBH-1001
Motor Type
Direct Drive 3-Phase PMAC Outrunner
Motor Power Rating | Speed
Max Watts 1562.81 | Max RPM 15033
Propellers
Number of Propellers
4
Propeller Manufacture
T-Motors
Propeller Model Number
URAP-1011
Number of Blades
2
Propeller Type
(2) 15x5.5CW and (2) 15x5.5CCW
Electronic Speed Controller
umber of ESCs
1
ESC Manufacture
Union Robotics
ESC Model Number
URAE-1002
ESC Type
4-in-1
ESC Power Rating
55A
1.3.4 Flight Control Surfaces
Control Surfaces
N/A
1.3.5 Avionics | Navigation | Communication Systems
Number of Flight Controllers
1
Flight Controller Manufacture
Union Robotics
Flight Controller Model
URMR-1003
Flight Controller Processor
32-bit STM32F7777 Cortex M4
Flight Controller Accelerometer/Gyroscope
Bosh BM1088
Flight Modes
Loiter, RTL, SmartRTL
Telemetry Manufacture
Union Robotics
Telemetry Model
URDL-1004
Telemetry Frequency
2.4GHZ
Radio Receiver Manufacture
Union Robotics
Radio Receiver Frequency
2.4GHz
Video Transmitter Manufacture
Union Robotics
Video Transmitter Model
URDL-1004
Video Transmitter Format
720P 30fps & 1080P 30/60fps
Video Transmitter Frequency
2.4GHz
1.3.6 Flight Battery
Battery Manufacture
Union Robotics
Battery Type
Li-ion Sanyo NCR18650GA
Battery Capacity
14000mAh
Battery min. Charge Rate
8.0A
Battery max. Charge Rate
14.0A
Number of Batteries Required for Flight
1
Number of Spare Batteries Available On-Site
2
1.3.7 Weights
Empty Weight - Without Flight Battery or Payload
4 lbs / 1.8KG
Nominal Take-Off Weight - with Standard Flight Battery, Standard Payload
7 lbs / 3.1KG
Maximum Take-Off Weight
10 lbs / 4.5KG
1.4 Remote Pilot Station
Radio Controller Manufacture
Union Robotics
Radio Controller Model
URDL-1004
Radio Controller Frequency
2.4GHz
1.4.1 Function Controls Layout
1.4.2 Command and Control Link
Telemetry Manufacture
Union Robotics
Telemetry Model
URDL-1004
Telemetry Frequency
2.4GHz
Telemetry Range
10km
1.5 Firmware | Software
Firmware
Union Robotics AP
Firmware Build
v4.1
Software
Union Robotics/Solex
Software Build
v1.0.3
1.6.1 Abbreviations and Acronyms
LOS
Loss of Signal
sUAS
Small Unmanned Aircraft System includes all
components of the system required for the flight of
an unmanned aircraft, including the radio controller,
data link and other related support equipment.
UAV
Unmanned Aerial Vehicle includes all components of the system required for the flight of an unmanned aircraft, including the radio controller, data link and other related support equipment. ISA
ISA
International Standard Atmosphere in which:
The air is a dry, perfect gas;
The temperature at sea level is 15° Celsius (59° Fahrenheit);
The pressure at sea level is 1013.2 mbar (29.92 inches Hg);
The temperature gradient from sea level to the altitude at which the temperature is -56.5°C (-69.7°F) is -0.00198°C (-0.003564°F) per foot and zero above that altitude
MSL
Mean Sea Level is the average height above the surface of the sea for all stages of tide
AGL
Above Ground Level is the height of the aircraft above the ground
OAT
Outside Air Temperature is the free air static temperature surrounding the aircraft
RTL
Return-to-Launch The flight mode that allows the aircraft to optimally return to the point of take off, without feedback from the operator. Return-to-Launch is also known as Return-to-Land or Return-to-Home.
RPA
Remotely Piloted Aircraft
ASL
Above Sea Level Altitude
sUAS
Small Unmanned Autonomous System or Small Unmanned Aircraft System
HDOP
Horizontal Dilution of Precision
1.6.2 Definitions
Throttle Stick
The radio controller stick responsible for throttle control. For the Pilot controller, this is the vertical movement of the left control stick.
Yaw Stick
The radio controller stick responsible for yaw (also called pan) control. For the Pilot controller, this is the lateral movement of the left control stick. For the camera operator controller, this is the lateral movement of the right control stick.
Pitch Stick
The radio controller stick responsible for pitch control. For the Pilot and camera operator controllers, this is the vertical movement of the right stick.
Roll Stick
The radio controller stick responsible for roll control. For the Pilot controller, this is the lateral movement of the right control stick.
Pitch/Roll Stick
The radio control stick responsible for both pitch and roll control. For the Pilot controller, this is the right stick.
Throttle/Yaw Stick
The radio control stick responsible for both throttle and yaw control. For the Pilot controller, this is the left stick.
Hook Release Switch
The radio control switch responsible for releasing the cargo hook control.
Flight Mode Switch
The radio control switch responsible for the flight mode control. For the Pilot controller, the flight mode switch controls both Loiter and Return-to-Launch.
Loiter
The flight mode that allows the aircraft to optimally hold its altitude and lateral position.
Pressure Altitude
Altitude measured from standard sea level pressure (1013.2 mbar, 29.92 in. Hg) by a pressure or barometric altimeter
It is the indicated pressure altitude corrected for position and instrument error. In this Manual, altimeter instrument errors are assumed to be zero
Maximum Continuous Power Output
The maximum typical power output of a motor averaged over the entire flight
Maximum Instantaneous Peak Power Output
The maximum power output of a motor during any phase of flight, such as when maneuvering
Maximum Takeoff Weight (MTOW)
Maximum allowable weight at liftoff
Standard Empty Weight
Weight of a standard aircraft
Basic Empty Weight
Standard empty weight plus optional equipment
Useful Load
Difference between take off weight and basic empty weight
Payload
Useful load less battery weight
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