background image

 

13

Drogue

 

Delay

    

 

 

Range:

 

1

 

to

 

30

 

/

 

Default:

 

1

 

The

 

Drogue

 

Delay

 

is

 

used

 

whenever

 

you

 

have

 

selected

 

a

 

Deployment

 

Mode

 

setting

 

of

 

Dual

 

Deploy

 

Backup.

 

  

In

 

all

 

other

 

cases

 

this

 

settings

 

is

 

not

 

used.

  

Whenever

 

the

 

RRC3

 

is

 

designated

 

in

 

a

 

backup

 

role

 

when

 

using

 

redundant

 

altimeter

 

systems,

 

you

 

can

 

delay

 

the

 

RRC3

 

Drogue

 

event

 

using

 

this

 

setting.

  

Should

 

this

 

delay

 

setting

 

be

 

set

 

for

 

a

 

long

 

period,

 

and

 

the

 

RRC3

 

determines

 

the

 

Main

 

Event

 

requires

 

activation;

 

the

 

RRC3

 

will

 

also

 

override

 

the

 

Drogue

 

Delay

 

timer

 

and

 

activate

 

the

 

Drogue

 

Event.

  

The

 

setting

 

is

 

entered

 

in

 

seconds.

 

 

DIP

 

switch

 

and

 

pushbutton

 

operations

 

 

Setting

 

the

 

RRC3

 

via

 

DIP

 

switch

 

and

 

pushbutton

  

Access

 

to

 

all

 

the

 

Base

 

Settings

 

is

 

made

 

available

 

via

 

the

 

RRC3

 

DIP

 

switch

 

and

 

pushbutton

 

interface.

  

The

 

value

 

of

 

all

 

these

 

settings

 

can

 

be

 

verified

 

or

 

reconfigured

 

at

 

any

 

time

 

without

 

the

 

use

 

of

 

the

 

optional

 

LCD

 

Terminal

 

or

 

mDACS

 

PC

 

Software

 

and

 

USB

 

Interface

 

module.

 

In

 

addition

 

to

 

providing

 

access

 

to

 

all

 

these

 

settings,

 

the

 

DIP

 

switch

 

and

 

pushbutton

 

interface

 

can

 

also

 

provide

 

access

 

to

 

the

 

altimeter

 

resident

 

Flight

 

Log

 

data

 

and

 

an

 

interactive

 

Test

 

Mode

 

that

 

can

 

validate

 

basic

 

operational

 

integrity

 

of

 

the

 

RRC3

 

(these

 

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

 

5

 

second

 

“init”

 

tone.

  

At

 

any

 

point

 

during

 

this

 

5

 

second

 

tone,

 

tap

 

the

 

PROGRAM

 

button.

  

The

 

beeper

 

and

 

LED

 

should

 

go

 

out,

 

and

 

the

 

unit

 

will

 

begin

 

its

 

Base

 

Settings

 

operation.

 

The

 

position

 

of

 

DIP

 

Switches

 

1

 

thru

 

3

 

determines

 

which

 

of

 

the

 

8

 

Base

 

Settings

 

that

 

you

 

want

 

to

 

verify,

 

or

 

re

program.

  

The

 

Base

 

Settings

 

operation

 

follows

 

a

 

simple

 

process

 

flow:

 

1.

 

The

 

RRC3

 

reads

 

the

 

position

 

of

 

DIP

 

Switches.

 

2.

 

The

 

RRC3

 

beeps/flashes

 

the

 

current

 

value

 

of

 

the

 

associated

 

setting.

 

3.

 

The

 

RRC3

 

pauses

 

for

 

5

 

seconds,

 

and

 

then

 

repeats

 

Step

 

1.

 

You

 

can

 

change

 

DIP

 

Switches

 

1

 

thru

 

3

 

at

 

any

 

time

 

to

 

select

 

a

 

new

 

setting

 

for

 

verification.

  

Using

 

this

 

process,

 

you

 

can

 

validate

 

the

 

values

 

of

 

all

 

8

 

Base

 

Settings

.

  

The

 

DIP

 

switch

 

/

 

Settings

 

positions

 

are:

 

SW1

 

SW2

 

SW3

 

OFF

 

OFF

 

OFF

     

Arming

 

Altitude

 

ON

     

OFF

 

OFF

     

Main

 

Deployment

 

Altitude

 

OFF

     

ON

     

OFF

     

Deployment

 

Mode

 

ON

    

ON

    

OFF

     

Audio

 

Options

 

OFF

 

OFF

     

ON

 

Audio

 

/LCD

 

/

 

Telemetry

 

Units

 

ON

    

OFF

     

ON

    

Low

 

Voltage

 

Lockout

 

/

 

Alarm

 

Level

 

OFF

     

ON

    

ON

 

   

Piezo

 

Tone

 

ON

    

ON

 

ON

 

  

Drogue

 

Delay

 

Summary of Contents for RRC3

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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 ...

Page 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...

Page 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...

Page 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 ...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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 ...

Page 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...

Page 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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