Missile Works RRC3 Скачать руководство пользователя страница 24

 

24

The

 

web

 

reference

 

can

 

be

 

found

 

here:

 

http://www.srh.noaa.gov/images/epz/wxcalc/stationPressure.pdf

 

 

Pressure

 

and

 

Velocity

 

Displacement

 

Processing

 

The

 

RRC3

 

applies

 

multiple

 

filtering

 

stages

 

to

 

the

 

pressure

 

data

 

it

 

collects

 

in

 

order

 

to

 

determine

 

an

 

equivalent

 

displacement

 

velocity.

  

Pressure

 

data

 

oversampling

 

is

 

first

 

performed

 

by

 

the

 

pressure

 

sensor

 

using

 

a

 

2048

 

sample

 

average

 

to

 

derive

 

a

 

single

 

pressure

 

reading.

  

This

 

oversampled

 

pressure

 

data

 

is

 

then

 

collected

 

at

 

a

 

50

 

Hz

 

rate,

 

then

 

averaged

 

again

 

to

 

derive

 

a

 

20

 

Hz

 

sample.

   

The

 

20

 

Hz

 

pressure

 

is

 

then

 

run

 

thru

 

a

 

recursive

 

21

 

element

 

FIR

 

filter

 

kernel

 

to

 

produce

 

the

 

20

 

Hz

 

velocity

 

data.

   

To

 

make

 

the

 

altimeter

 

mach

 

immune,

 

additional

 

velocity

 

data

 

discrimination

 

processing

 

is

 

performed

 

to

 

ensure

 

that

 

anomalous

 

velocity

 

changes

 

are

 

ignored.

 

Typically

 

these

 

pressure

 

artifacts

 

are

 

most

 

pronounced

 

during

 

velocity

 

transitions

 

from

 

sonic

 

to

 

sub

sonic

 

speeds.

 

 

Product

 

Warranty

 

Missile

 

Works

 

Corporation

 

has

 

exercised

 

reasonable

 

care

 

in

 

the

 

design

 

and

 

manufacture

 

of

 

this

 

product

 

and

 

warrants

 

the

 

original

 

purchaser

 

that

 

the

 

RRC3

 

is

 

free

 

of

 

defects

 

and

 

that

 

it

 

will

 

operate

 

at

 

a

 

satisfactory

 

level

 

of

 

performance

 

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,

 

Missile

 

Works

 

Corporation

 

will

 

return

 

the

 

unit

 

postage

paid

 

to

 

the

 

original

 

purchaser.

 

  

Product

 

Disclaimer

 

and

 

Limit

 

of

 

Liability

 

Because

 

the

 

use

 

and

 

application

 

of

 

this

 

equipment

 

are

 

beyond

 

our

 

control,

 

the

 

purchaser

 

or

 

user

 

agrees

 

to

 

hold

 

harmless

 

Missile

 

Works

 

Corporation

 

and

 

their

 

agents

 

from

 

any

 

and

 

all

 

claims,

 

demands,

 

actions,

 

debts,

 

liabilities,

 

judgments,

 

costs,

 

and

 

attorney

 

fees

 

arising

 

out

 

of,

 

claimed

 

on

 

account

 

of,

 

or

 

in

 

any

 

manner

 

predicated

 

upon

 

loss

 

or

 

damage

 

to

 

property

 

of,

 

or

 

injuries

 

to

 

or

 

the

 

death

 

of

 

any

 

and

 

all

 

persons

 

arising

 

out

 

of

 

the

 

use

 

this

 

equipment.

  

Due

 

to

 

the

 

nature

 

of

 

electronic

 

devices,

 

and

 

the

 

application

 

and

 

environments

 

for

 

those

 

devices,

 

the

 

possibility

 

of

 

failure

 

can

 

never

 

be

 

totally

 

ruled

 

out.

  

It

 

is

 

the

 

responsibility

 

of

 

the

 

purchaser

 

or

 

user

 

of

 

this

 

equipment

 

to

 

properly

 

test

 

and

 

simulate

 

the

 

actual

 

conditions

 

under

 

which

 

the

 

device

 

is

 

intended

 

to

 

be

 

used

 

to

 

ensure

 

the

 

highest

 

degree

 

of

 

reliability

 

and

 

success.

 

 

 

 

 

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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