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

www.union-robotics.com

[e-mail]

1-888-864-6680

1.3.1 Three-View-Drawing of the sUAS

Meadowhawk 2 - Front

Meadowhawk 2 - Top

Meadowhawk 2 - Side

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

Meadowhawk 2 - Height

Meadowhawk 2 - Width

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