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16

It

 

should

 

be

 

noted

 

that

 

access

 

to

 

all

 

of

 

these

 

settings

 

is

 

accomplished

 

by

 

use

 

of

 

the

 

optional

 

plug

‐

in

 

LCD

 

Terminal

 

accessory,

 

or

 

by

 

use

 

of

 

the

 

USB

 

Interface

 

module

 

and

 

mDACS

 

PC

 

Software

 

application

 

only.

  

These

 

settings

 

are

 

unavailable

 

through

 

the

 

DIP

 

Switch

 

interface.

 

Usage

 

of

 

the

 

LCD

 

and

 

mDACS

 

interfaces

 

are

 

covered

 

in

 

their

 

respective

 

User

 

Manuals.

 

Flight

 

Telemetry

 

and

 

Settings

 

The

 

RRC3

 

provides

 

the

 

ability

 

to

 

stream

 

live

 

telemetry

 

data

 

via

 

the

 

onboard

 

5

‐

pin

 

Comm

 

Port.

  

The

 

update

 

rate

 

and

 

content

 

of

 

this

 

data

 

stream

 

are

 

configurable

 

for

 

many

 

different

 

applications,

 

including

 

data

 

downlinking,

 

data

 

logging,

 

or

 

digital

 

control

 

of

 

other

 

onboard

 

avionics

 

devices.

  

The

 

data

 

stream

 

is

 

output

 

at

 

user

 

programmable

 

intervals

 

from

 

the

 

primary

 

UART

 

of

 

the

 

RRC3

 

mCU

 

in

 

a

 

serial

 

packet

 

format

 

as

 

follows:

 

‐ 

9600

 

BPS

 

Asynchronous

 

‐ 

8

 

Data

 

bits

 

‐ 

No

 

Parity

 

bit

  

‐ 

1

 

Stop

 

bit

 

All

 

data

 

items

 

in

 

the

 

stream

 

are

 

in

 

an

 

ASCII

 

format

 

are

 

individually

 

comma

 

delimited,

 

and

 

each

 

packet

 

is

 

terminated

 

via

 

a

 

standard

 

Carriage

 

Return

 

character

 

(0Dh).

   

 

Data

 

Controls

 

This

 

setting

 

enables

 

the

 

telemetry

 

stream

 

feature

 

of

 

the

 

RRC3.

  

Set

 

this

 

according

 

to

 

the

 

specific

 

requirements

 

for

 

your

 

data

 

stream:

 

LCD

 

Setting

 

Value

 

Setting

 

Description

 

 

 

 

 

 

0

 

 

No

 

Telemetry

 

/

 

Disabled

 

1

 

 

Telemetry

 

Pre

‐

Launch

 

@

 

0.5

 

sec

 

packet

 

update

 

rate

 

2

 

 

Telemetry

 

Pre

‐

Launch

 

@

 

1.0

 

sec

 

packet

 

update

 

rate

 

3

 

 

Telemetry

 

Post

‐

Launch

 

@

 

0.5

 

sec

 

packet

 

update

 

rate

 

4

 

 

Telemetry

 

Post

‐

Launch

 

@

 

1.0

 

sec

 

packet

 

update

 

rate

 

Data

 

Items

 

This

 

setting

 

controls

 

which

 

data

 

items

 

will

 

be

 

included

 

in

 

the

 

telemetry

 

stream.

  

Set

 

this

 

according

 

to

 

the

 

specific

 

data

 

items

 

your

 

application

 

requires.

  

The

 

following

 

table

 

describes

 

the

 

packet

 

order

 

precedence,

 

formats,

 

and

 

associated

 

binary

‐

based

 

values

 

of

 

all

 

the

 

available

 

data

 

items:

 

 

Order

       

   

Item

   

 

Format

 

(max

 

characters)

 

 

 

 

LCD

 

Value

 

1

 

Timestamp

 

XXXX.X

 

seconds

 

Setting

 

Value

 

+

 

1

 

2

 

AGL

 

Altitude

 

+/

‐ 

XXXXX

 

(feet

 

/

 

meters)

 

Setting

 

Value

 

+

 

2

 

3

 

Velocity

 

+/

‐ 

XXXX

 

(fps

 

/

 

mps

 

/

 

MPH

 

/

 

KPH)

 

Setting

 

Value

 

+

 

4

 

4

 

Temperature

 

+/

‐ 

XXX

 

(deg

 

F

 

/

 

deg

 

C)

 

Setting

 

Value

 

+

 

8

 

5

 

Events

 

(v1.5x)

 

‐‐‐ 

/

 

DMA

 

/

 

dma

 

(Event

 

Status

 

Only)

 

Setting

 

Value

 

+

 

16

 

5

 

Events

 

(v1.6x)

 

???

 

/

 

dma

 

/

 

DMA

 

(Continuity

 

and

 

Event

 

Status)

 

Setting

 

Value

 

+

 

16

 

6

 

Battery

 

Voltage*

 

X.X

 

volts

 

Setting

 

Value

 

+

 

32

 

*

 

v1.60

 

Firmware

 

Only

 

Содержание RRC3

Страница 1: ...1 RRC3 Rocket Recovery Controller 3 User Manual Revision 1 60 Missile Works Corporation PO Box 1725 Lyons CO 80540 www missileworks com ...

Страница 2: ...launch elevation it then deploys the main parachute allowing the rocket to make a safe landing Primary Features Drogue and Main outputs Configurable Deployment operations Configurable Main and Arming altitudes User selectable beep frequency Configurable third Aux output 15 flight memory 28 minutes per flight Live data streaming and telemetry capability Specifications Microcontroller 16MHz 16 bit M...

Страница 3: ... providing additional output channels and timing Default Base Settings Arming Altitude 300 AGL Main Deployment Altitude 500 AGL Deployment Mode Drogue Apogee Main AGL altitude Audio Options Continuity Beep Units Feet Feet per second Low Voltage Lockout Disabled Piezo Tone 1 04 KHz Drogue Delay 1 second Used in Backup Mode only NOTE You can reset the settings of the RRC3 back to these defaults usin...

Страница 4: ... residue and over pressure Isolates the electronics from the aerodynamic pressure and vacuum during flight Provides uniform static pressure equilibrium to ambient pressure during flight IMPORTANT Inadequate sealing of the electronics bay or exposure of the electronics to ejection charge heat BP residue or pressure will cause the RRC3 to malfunction IMPORTANT Black powder residue is extremely corro...

Страница 5: ...tputs of the RRC3 are rated for 3A service When using other batteries chemistries that can source higher discharge currents users should ensure the output connections to the Drogue Main and Aux are not shorted and the connected electronic match loads do not exceed 3A to avoid damaging the unit The brownout capacitor is optimized to prevent an over current brownout condition when operating the RRC3...

Страница 6: ... out of the hole Maintain positive contact of the stripped wire ends while twisting them together to avoid power bobbles which can lead to brownouts or other undesired results including potential output event activations due to potential undefined states of operation It is best to tape the leads after twisting them then tape them to the airframe or poke the end into another hole on the airframe le...

Страница 7: ... 10 second launch commit test time silence 5 Launch Detect mode continuity beeps a A long beep indicates no continuity on any event terminal b One short beep indicates continuity on only the drogue terminal c Two short beeps indicate continuity on only the main terminal d Three short beeps indicate continuity on the main and drogue terminals Assuming the altimeter beeps out the expected continuity...

Страница 8: ...parasitic pressure effects impacting equilibrium rates and reliable recovery Advanced Features and Operation The RRC3 provides a number of advanced features and operations while still maintaining and providing the basics of simple and reliable dual event recovery and peak altitude determination These advanced features are easily accessible but do not interfere or get in the way of the basic functi...

Страница 9: ...start up delay The LED will flash on and off every 2 seconds while in this mode This delay period allows barometric stabilization and establishes an initial barometric history The RRC3 also looks for a Host Connection message from a host PC computer attempting to connect in Host or Simulation Modes These operations are covered in subsequent mDACS User Manual POST Mode Power On Self Test Once a bar...

Страница 10: ...any of the Pre Launch Audio options of the RRC3 they will be beeped flashed at this stage of operations These audio options include beeping flashing of battery voltage and Deployment modes see the following Base Settings section if the manual for more details Launch Commit Test The Launch Commit Test is a 10 second test operation that is a trial run of the Launch Detect Mode applying the currently...

Страница 11: ... 4 5 or 6 digits Should you have enabled any additional Post Flight Audio Options Peak velocity and or Time to Apogee they will beeped flashed here as well The RRC3 will continue to beep flash this data until powered off and repeat the cycle every 10 seconds Base Settings The RRC3 Base Settings are a collection of settings and controls that provide all the basic functions of the altimeter The foll...

Страница 12: ...able pad wait time and subsequent flight Audio LCD Telemetry Units Range 1 to 4 Default 1 The Units setting determines how the RRC3 will report all the flight performance values This setting applies to all forms of data reporting the audio beeping the data displayed on the optional LCD terminal and the values transmitted in flight via the telemetry capability Choose a setting that is most appropri...

Страница 13: ... are covered in the subsequent manual section DIP Switch 4 determines this basic selection of Settings access or Flight Log Test Mode access To start a setting session ensure the RRC3 is powered off and that it has a battery and power switch attached and read Also ensure the DIP switch 4 is in the OFF position Apply power to the RRC3 by activating the power switch You should hear the start of the ...

Страница 14: ...n the DIP switch and pushbutton interface can also provide access to the altimeter resident Flight Log data To start a Flight Log session ensure the RRC3 is powered off and that it has a battery and power switch attached and ready Also ensure the DIP switch 4 is in the ON position Apply power to the RRC3 by activating the power switch You should hear the start of the 5 second init tone At any poin...

Страница 15: ...lidate the active build you are running Use this Diagnostic to quickly validate and test the operational integrity of the barometric sensor system The Continuity Inputs diagnostic will read the status of the Drogue Main and Auxiliary and then beep flash the input status accordingly This test mimics the same continuity status beeping flashing while in Launch Detect Mode Long Beep Flash No continuit...

Страница 16: ...d via a standard Carriage Return character 0Dh Data Controls This setting enables the telemetry stream feature of the RRC3 Set this according to the specific requirements for your data stream LCD Setting Value Setting Description 0 No Telemetry Disabled 1 Telemetry Pre Launch 0 5 sec packet update rate 2 Telemetry Pre Launch 1 0 sec packet update rate 3 Telemetry Post Launch 0 5 sec packet update ...

Страница 17: ...ontrol sequence independent of the standard drogue and main functions performed by the RRC3 These settings provide a framework that allows you to design an output control sequence via the definition of a serialized flow of operations With one exception all Aux control sequences have a trigger event that initiates the control sequence When this trigger event is valid true optional secondary and ter...

Страница 18: ... Loop Comparator This Aux OCS setting combines the Trigger Event with an ensuing Loop Comparator operation Once the Trigger Event is activated the Comparator is then evaluated for validity continuously as long as the trigger event remains valid If the comparator result is valid then the Aux Output is activated Event Timer Loop Comparator This Aux OCS setting combines the Trigger Event with an ensu...

Страница 19: ...er event is defined 1 Launch Altitude Arming Altitude and unit has not reached apogee 2 Apogee Apogee was detected and Altitude Main Altitude 3 Main Main was deployed and unit has not landed 4 Landing Unit has landed Auxiliary Comparator Operation Whenever the Comparator is required by the active Aux OCS an appropriate Comparator Operation setting is required as well The Comparator Operation defin...

Страница 20: ...s how the Aux Output functions once it has been activated by a successful Aux OCS operation There are 3 distinct functions that this setting can establish Latched Output Once activated the Aux Output will be maintained ON in a Latched On state until a subsequent power off of the RRC3 One Shot Output The Aux Output will activate one time with a duration of 1 second This operation is identical to bo...

Страница 21: ...g your first motor anticipated burn time plus the coast time you desire before the staging or airstart event Timer intervals are express in 1 10th second values so for 3 seconds use a value of 30 Aux Output Control Sequence OCS Event Timer Auxiliary Trigger Event Launch Auxiliary Comparator Operation n a Auxiliary Comparator Value ACV n a Auxiliary Timer Interval 30 3 0 seconds Auxiliary Output Co...

Страница 22: ... Main Auxiliary Comparator Operation Alt ACV x 100 Auxiliary Comparator Value ACV 10 1000 ft Auxiliary Timer Interval n a Auxiliary Output Control Value 1 1 Shot Landing Locator Beacon This example allows you to operate a loud piezo or horn with a pulsed beep once the rocket has touched down to assist you in location and recovery operations The Aux Output will activate the horn for 1 second pause ...

Страница 23: ...nt altitude The formula is as follows The web reference can be found here http www srh noaa gov images epz wxcalc pressureAltitude pdf mDACS Geopotential Altitude Conversion If you have accurate temperature for your ambient launch conditions and for your apogee temperatures and you know accurate ambient launch humidity conditions you can apply the same Geopotential Altitude calculus used by NOAA r...

Страница 24: ...formance for a period of one year from the original date of purchase If the system fails to operate as specified then return the unit or units within the warranty period for repair or replacement at our discretion The system must be returned by the original purchaser and be free of modification or any other physical damage which renders the system inoperable Upon repair of replacement of the unit ...

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