Drone Rescue Systems DRS-M300 User manual

User Manual DRS-M300-EN (2022-08-10)
©2022 Drone Rescue Systems GmbH
Content Overview
Parachute Manual DRS-M300
(version 2.3-EN)
Emergency Trigger Device Manual
(version 1.1-EN)
DRS Firmware Manual
(version 2.5-EN)

Parachute Manual DRS-M300 v2.3-EN (2022-08-10)
©2022 Drone Rescue Systems GmbH 1/26
Parachute Manual DRS-M300
Version 2.3-EN
2022-08-10
Drone Rescue Systems GmbH
Andritzer Reichsstraße 15
8045 Graz
AUSTRIA
www.dronerescue.com

Parachute Manual DRS-M300 v2.3-EN (2022-08-10)
©2022 Drone Rescue Systems GmbH 2/26
Contents
Parachute Manual DRS-M300 ........................................................................................... 1
1Disclaimer ................................................................................................................. 3
2Introduction.............................................................................................................. 4
3Components.............................................................................................................. 5
4Installation Tools....................................................................................................... 8
5Installation................................................................................................................ 9
Install the M300 connector ......................................................................................... 9
Mount the parachute cords....................................................................................... 10
Mount the container cord ......................................................................................... 13
Modification of the UAV carrying case...................................................................... 14
Configure the M300................................................................................................... 15
5.5.1 Configure Onboard SDK in DJI Assistant Application......................................... 15
5.5.2 Onboard SDK activation ..................................................................................... 16
DRS Configuration...................................................................................................... 17
Assembly test............................................................................................................. 17
6Flight........................................................................................................................19
Pre-Flight Inspection.................................................................................................. 19
Loading and unloading the parachute....................................................................... 20
6.2.1 Put the container under tension........................................................................ 20
6.2.2 Load the parachute ............................................................................................ 21
6.2.3 Unload the parachute ........................................................................................ 24
Takeoff....................................................................................................................... 25
After flight.................................................................................................................. 25
7Storage ....................................................................................................................26
8Maintenance............................................................................................................26
9Specifications ...........................................................................................................26
Operational and environmental conditions .............................................................. 26
Approved payloads.................................................................................................... 26

Parachute Manual DRS-M300 v2.3-EN (2022-08-10)
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1Disclaimer
The information contained in this document is confidential, privileged and only for the
information of the intended recipient and may not be used, published or redistributed without
the prior written consent of Drone Rescue Systems GmbH.
The opinions expressed are in good faith, and while every care has been taken in preparing
these documents, Drone Rescue Systems GmbH makes no representations and gives no
warranties of whatever nature in respect of these documents, including but not limited to the
accuracy or completeness of any information, facts and/or opinions contained therein.
Drone Rescue Systems GmbH, its subsidiaries, the directors, employees and agents cannot be
held liable for the use of and reliance of the opinions, estimates, forecasts and findings in
these documents.
We recommend that you do not fly prior to purchasing liability insurance. This helps cover
costs in the event that persons are hurt or property is damaged as a result of your use of
DRONE RESCUE technology. In general, RC aircraft are not covered by standard liability
insurance.
Your safety is your own responsibility, including proper use of equipment and safety gear, and
determining whether you have adequate skill and experience. Our products may be
dangerous, unless used properly and with adequate precautions, including safety gear. Our
products are not intended for use by hobbyists or non-professional users.
Warranty will be terminated if parachute is re-packed by yourself.

Parachute Manual DRS-M300 v2.3-EN (2022-08-10)
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2Introduction
The DRS-M300 is an autonomous parachute solution for the DJI M300 (UAV), providing the
following advantages
•UAV-independent sensors
•Very light-weighted
•Easy to reuse within minutes
•Visual and acoustical indication signals
•No use of pyrotechnics/explosive components to deploy the parachute
•No use of compressed gas cartridges to deploy the parachute
•Bayonet mechanism to simply attach and detach the whole system
This document will guide you through the system components, installation, configuration, pre-
flight checks, and storage and maintenance recommendations.
Beside the standard device the RC variant is available to trigger the parachute via handheld
remote control.

Parachute Manual DRS-M300 v2.3-EN (2022-08-10)
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3Components
Table 1 lists all systems components. Within the document, parts are linked by their short ID
e.g., container for the carbon container.
Short ID
Picture1
Quantity
Description
Container
1
Carbon container of the DRS system
Container lid
1
Lid of the container.
Parachute
1
Parachute (wrapped in a plastic cover secured
by some rubber bands)
Parachute cord
2
Cords mounted to the UAV
Long hook and
loop fastener
2
Used to fix the parachute cords
Short hook and
loop fastener
1
Used to fix the container cord
1
Depending on the actual DRS configuration, the component pictures in Table 1 may slightly differ from your
system.

Parachute Manual DRS-M300 v2.3-EN (2022-08-10)
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Short ID
Picture1
Quantity
Description
Container cord
1
Safety cord for the container
Hook
1
Brummel hook to link the parachute to the
parachute cords
Hook
protection
sleeve
1
Protection sleeve for the brummel hook
Cord box
1
Self-adhesive cord box to stow the parachute
cords away
Cord box lid
1
Lid of the cord box
Cable clip
1
Self-adhesive cable clip
Nut
4
M3 self-retaining nut
Clamp
2
Clamp pair
Spacer set
1
Spacers for top-mounted payload (1 short, 3
long)

Parachute Manual DRS-M300 v2.3-EN (2022-08-10)
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Short ID
Picture1
Quantity
Description
DRS M300
connector
12
M300 standard connector with mounting
plate for the DRS system
13
M300 RC connector, including antenna, with
mounting plate for the DRS system
Optional component depending on device
variant.
Emergency
Trigger
13
Handheld radio controlled (RC) transmitter
and antenna to deploy parachute in case of
emergency.
Optional component depending on device
variant.
Table 1 System components
2
For standard variant only
3
For DRS-M300 RC variant only

Parachute Manual DRS-M300 v2.3-EN (2022-08-10)
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4Installation Tools
Table 2 lists all tools used for the system installation. These tools are not part of the system
and have to be provided by the user. Within the document, tools are linked by their short ID.
Short ID
Picture
Description
Nut driver M3
Nut driver 5.5mm (M3)
Cutter knife
Cutter knife, also known as Utility/Stanley
knife
Table 2 Installation Tools

Parachute Manual DRS-M300 v2.3-EN (2022-08-10)
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5Installation
Unmount all propellors and detach all batteries and other power supplies before starting the
installation!
Caution:
Mounted propellors may cause injuries or damages.
Caution:
It is mandatory to verify the correct operation with an assembly test right after the
installation! See chapter “5.7 Assembly test”for details.
Install the M300 connector
Use the clamps, the rubber strips, and the nuts to fixate the mounting plate of the DRS M300
connector on the front right arm of the UAV with the cable pointing to the UAV center. Place
it as close to the center as possible, so that you can still unlock and fold the arm. The mounting
plate must be in a horizontal position when the arm is unfolded to the flying position or the
banking angle measurement will be faulty during flight which could lead to an unwanted
deployment. Make sure that the rubber strips are between the arm and the clamps, then
tighten all nuts equally with 3 Nm using the nut driver M3.
Caution:
It is necessary to mount the plate as tight as possible to the mechanism, because
otherwise it will scratch on the other arm, when folded (e.g., during transport).
3 Nm