Aerotech High-Power RMS-PLUS 54/1706 Assembly And Operation Instructions

HIGH-POWER RMS-PLUS™ HIGH-POWER RMS-PLUS™
HIGH-POWER RMS-PLUS™ HIGH-POWER RMS-PLUS™ HIGH-POWER RMS-PLUS™
Assembly and Operation Instructions Assembly and Operation Instructions

READ THIS BEFORE YOU BEGIN:

• Study the illustrations and sequence of assembly. THE SEQUENCE OF
ASSEMBLY IS EXTREMELY IMPORTANT. READ ALL INSTRUCTIONS
BEFORE USE. USE RMS™ MOTORS AND RELOAD KITS ONLY IN
ACCORDANCE WITH ALL INSTRUCTIONS. Review the parts list and
become familiar with all parts before assembly. IF ANY PARTS ARE
MISSING OR DAMAGED, CONTACT RCS AT 1-435-865-7100 OR
EMAIL AT warranty@aerotech-rocketry.com.
• DO NOT USE ANY PARTS OF THE RMS™ SYSTEM THAT ARE
DAMAGED IN ANY WAY . If in doubt, contact RCS at the number above
for assistance.
• DO NOT MODIFY THE MOTOR IN ANY WAY . Modification of the motor
or the reload kit parts could result in motor failure, lead to the destruction
of both your rocket and motor and may cause personal injury, death and/
or property damage. Modification of the motor or reload kit in any way will
invalidate your motor warranty.
• USE ONLY AEROTECH™ RMS™ RELOAD KITS AND MOTOR PARTS
TO REFURBISH YOUR RMS™ MOTOR . The AeroTech/RCS reload kits
have been designed specifically for use in your particular AeroTech/RCS
RMS™ motor. Use of imitation components may destroy your motor,
rocket and payload and will invalidate your motor warranty. Only use
AeroTech/RCS RMS™ reload kits intended for your specific AeroTech/
RCS RMS™ motor. DO NOT INTERCHANGE PARTS!
AeroTech/RCS RMS™ reload kits or motor components for any other
purpose than to refurbish an AeroTech/RCS RMS™ motor.
• DO NOT REUSE ANY OF THE DISPOSABLE PARTS OF THE RMS™
RELOAD KIT . This includes the liner, nozzle and o-rings. These
components have been designed for one use only and must be discarded
after firing. Reuse can result in motor failure during subsequent operation
and will invalidate your motor warranty.
• Motors are hot after firing. Although the RMS™ operates at a lower
temperature than most disposable motors, the higher thermal conductiv-
ity of the aluminum motor parts may make it seem otherwise. If necessary
to handle a motor before it has cooled down, use a rag or similar article.
• Read and follow the safety code of the Tripoli Rocketry Association (TRA)
and comply with all federal, state and local laws in all activities involving
high power rockets.

Chapter 1. Forward Closure Assembly

1-1. Apply a light coat of Synco™ Super Lube™ or other grease to all
threads and all 4 o-rings. This will facilitate assembly and prevents
the threads from seizing.
1-2. Fig.-1: Chamfer both inner edges of the delay charge insulator with
your fingernail. Assemble the RMS-Plus delay charge element,
delay charge insulator, aft dealy charge spacer and delay charge
o-ring as shown. NOTE: It is not necessary to tape the delay
charge element or insulator, the hot gas seal is provided by the
delay charge o-ring alone.
1-3. Fig.-2: Insert the forward delay charge spacer (1-1/8" O.D. neo-
prene washer) into the delay charge cavity until it is seated against
the forward end of the cavity. Apply a light film of grease to the
inner circumference of the delay charge cavity (but not the forward
end of the cavity).
1-4. Fig.-3: Insert the delay charge assembly shown in Fig.-1 into the
smoke charge cavity, o-ring end first, until it is seated against the
forward smoke charge spacer. NOTES: When using a plugged
forward closure ONLY, fill the opening in the forward delay charge
spacer with grease prior to installing the delay charge assembly,
and install the delay charge components in this order: Forward
delay charge spacer, delay charge o-ring, delay charge element,
delay charge insulator and aft delay charge spacer.
DO NOT OPEN RELOAD KIT UNTIL READY TO USE.
PARTS:
RMS™ HARDWARE
54mm aft closure
54/1706 case
54mm forward closure
(std. reg. length or plugged reg. length)
54mm forward seal disk (1/8" thick flange)
RELOAD KIT
Nozzle (black plastic part)
Liner (2" O.D. black plastic tube)
Propellant grains
Fwd & aft o-rings (1/8" thick X 2" O.D.) 2
Seal disk o-ring (1/16" thick X 1-7/8" O.D.)
RMS-Plus™ smoke charge element (short solid part) 1
Delay charge insulator (1-1/8" O.D. paper tube)
Delay charge o-ring (1/8" thick X 1-1/8" O.D.)
Aft delay charge spacer (short colored paper tube)
Forward delay charge spacer (1-1/8" O.D. neoprene washer) 1
Do not use
ITEMS NEEDED FOR USE:
• Synco™ Super Lube™ or other grease
• Hobby knife
• FirstFire or other igniter
• Wet wipes or damp paper towels
SAVE THE RELOAD KIT PLASTIC BAG FOR THE USED RE-
LOAD PARTS. DISPOSE OF BAG AND PARTS PROPERLY.
Delay Charge
Insulator
(Chamfered)
Aft Delay
Charge
Spacer
Forward Delay
Charge Spacer
(1-1/8" O.D.
Washer)
Delay
Charge
Cavity
Apply Grease to
This Surface
Delay Charge
Assembly Inserted
Completely Into
54mm Forward
Closure
Fill with grease
when using
plugged forward
closure ONLY
2-1. Fig.-4: Using a hobby knife or similar tool, remove the
burr (rough, raised edge) from both inside ends of the
liner tube. Insert the nozzle into one end of the liner tube
until the nozzle flange is seated against the liner.
1
1
1
2-2. Fig.-5: Push the liner assembly, open end first, into the
1
motor case until the nozzle protrudes from the case
about 1-1/4". NOTE: A light coat of grease on the
outside surface of the liner will facilitate installation and
casing cleanup after motor firing.
1
1
4
2-3. Fig.-5: Place the greased aft (1/8" thick X 2" O.D.) o-
ring into the groove in the nozzle insert.
1
1
1
1
2-4. Fig.-6: Thread the aft closure into the motor case by
hand until about 1/16" gap remains between the case
and the closure. NOTE: Final tightening will be done
after the other motor components are loaded into the
case.
2-5. Fig.-7: Install the propellant grains into the liner. NOTE:
Only two grains are shown in some illustrations for
simplicity. RMS-54/1706 motors use four (4) grains.
Fig.-1
Delay
Charge 2-6. Fig.-8: Place the greased forward seal disk (1/16" thick
O-Ring
X 1-7/8" O.D.) o-ring into the groove in the forward seal
disk.
RMS-Plus™
2-7. Fig.-9: Insert the smaller (o-ring) end of the seal disk
Delay Charge
into the open end of the liner tube until the seal disk
Element
flange is seated against the end of the liner.
RMS™
54mm
Extended
Forward
2-8. Fig.-10: Place the greased forward (1/8" thick X 2"
Closure
O.D.) o-ring into the case, seated against the forward
seal disk.
Fig.-2
2-9. Fig.-11: With the motor case held in a horizontal
position, thread the completed forward closure assem-
Delay
bly into the open end of the motor case by hand until it
Charge
is seated against the case.
O-Ring
Fig.-3
2-10. Finish tightening the aft closure by hand until it is seated
against the case. NOTE: There will be some resistance
to threading in the closure during the last 1/32" to 1/16"
Forward
Delay
of travel. It is normal if a slight gap remains between the
Charge
closure and the case after tightening and the grains
Spacer
rattle slightly inside the liner.

Chapter 2. Case Assembly

Liner
Nozzle Flange
Liner
Nozzle Protrudes
about 1-1/4" Assembly
Fig.-5
Aft O-ring
Aft Closure
(1/16" Gap)
Fig.-6
Liner
Greased Forward
Seal Disk O-ring
Forward Seal
Disk (Aluminum
Washer)
Fig.-8
Forward
Case Assembly
Seal Disk
Fig.-9
1/8" Forward O-Ring Fig.-10
Fig.-4
Case
Case Assembly
Propellant Grains
Fig.-7
Forward Seal
Disk Assembly
Liner
Fig.-9
Assembled
Forward
Closure
Case
Fig.-11