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8

Short

 

low

 

tone

 

beep

 

(end

 

of

 

audio

 

value

 

report)

 

Long

 

pause

 

(beeping

 

will

 

repeat)

 

The

 

altimeter

 

will

 

continue

 

to

 

beep

 

as

 

described

 

until

 

powered

 

off.

  

There

 

are

 

additional

 

flight

 

data

 

items

 

you

 

can

 

enable

 

to

 

beep

 

after

 

each

 

flight

 

(see

 

the

 

"Audio

 

Options"

 

setting

 

in

 

the

 

Advanced

 

Operation

 

section).

 

 

Operating

 

Tips

 

for

 

Success

 

 

Always

 

pre

‐

test

 

your

 

altimeter

 

as

 

COMPLETELY

 

as

 

possible

 

prior

 

to

 

every

 

flight.

  

This

 

includes

 

a

 

test

 

of

 

the

 

inputs,

 

outputs,

 

and

 

baro

 

system.

  

These

 

tests

 

can

 

be

 

performed

 

using

 

the

 

diagnostics

 

capability

 

of

 

the

 

RRC3

 

(see

 

the

 

Advanced

 

Operation

 

section).

 

 

 

Always

 

pre

‐

test

 

your

 

batteries

 

before

 

each

 

flight

 

and

 

ensure

 

they

 

have

 

adequate

 

power

 

capacity

 

for

 

the

 

anticipated

 

worst

 

case

 

flight

 

profile,

 

including

 

unplanned

 

“on

‐

the

‐

pad”

 

waiting

 

time.

 

 

 

Always

 

pre

‐

measure

 

your

 

deployment

 

charge

 

initiators.

  

Measure

 

them

 

for

 

a

 

nominal

 

resistance

 

and

 

verify

 

they

 

are

 

not

 

shorted.

 

 

 

Proper

 

port

‐

sizing

 

creates

 

ideal

 

equilibrium

 

rates.

  

Ensure

 

that

 

your

 

porting

 

is

 

compliant

 

with

 

the

 

recommended

 

sizing.

  

Improperly

 

sized

 

porting

 

or

 

other

 

leaks

 

in

 

the

 

electronics

 

bay

 

can

 

create

 

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

 

functions

 

that

 

the

 

RRC3

 

provides.

 

 

Dual

 

Battery

 

Wiring

 

The

 

RRC3

 

is

 

designed

 

to

 

fly

 

using

 

9V

 

alkaline

 

batteries

 

in

 

tandem

 

with

 

low

 

current

 

ematches

 

for

 

the

 

drogue

 

and

 

main

 

deployment

 

charges.

  

Should

 

your

 

application

 

require

 

higher

 

current

 

for

 

output

 

events,

 

or

 

your

 

operating

 

at

 

lower

 

battery

 

voltages

 

you

 

might

 

consider

 

using

 

a

 

dual

 

battery

 

wiring

 

setup.

  

This

 

method

 

isolates

 

the

 

RRC3

 

Logic

 

Battery

 

power

 

from

 

the

 

Drogue/Main

 

Deployment

 

charge

 

power,

 

thus

 

eliminating

 

any

 

potential

 

voltage

 

brown

‐

out

 

scenarios

 

during

 

event

 

activation.

  

The

 

logic

 

battery

 

must

 

comply

 

with

 

the

 

3.5VDC

 

to

 

10VDC

 

rating

 

as

 

mentioned

 

in

 

the

 

specs;

 

however

 

your

 

pyro

 

battery

 

may

 

be

 

any

 

voltage

 

up

 

to

 

an

 

absolute

 

maximum

 

of

 

30VDC.

  

It

 

is

 

also

 

recommended

 

when

 

using

 

this

 

dual

 

battery

 

operation

 

to

 

first

 

activate

 

the

 

RRC3

 

Logic

 

Switch,

 

and

 

after

 

verification

 

of

 

a

 

successful

 

boot,

 

then

 

activate

 

the

 

Pyro

 

Switch.

 

 

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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