USR - Sentra SRB Gallery

Finally finished. Core is 24mm, boosters 18mm. I am thinking a D5 with two B6's for the first flight.

After that, it's time for an F32!

Post copied to gallery with permission

Nice! I have to get back to building my Micro Sentra SRB.

Not to get too off topic for a gallery thread, but how did you go about filling the gaps in the airframe where the vent holes on the outboards and the airframe line up?

I used the simplest technique - there are no vent holes to connect. I saw no situation in which I would want to use the outboards for the delay/ejection, so I left that step out and plan on always using the core motor for ejection.

Welcome to the USR Sentra SRB Gallery on TRF.

This gallery showcases the USR Sentra SRB and those rockets derived from it. Particularly appropriate in this thread are the following:


USR: Micro-Sentra SRB: #1181
USR: Sentra SRB: #1063
USR: Sentra SRB (2.7"): #1187
USR: Sentra SRB (6"): #1128
USR: Sentra SRB (12"): #1169



as well as any upscales, downscales, clones, kitbashes or other derivative works. Even Goonies qualify!

USR Sentra SRB (#1063) Basic Information.

U.S. Rockets (USR)

MODEL NAME: Sentra SRB Also known as:

NUMBER: #1063

Introduced:
Final Year:
Designer:

Type: Sport, Payload, Parallel Stager
Motor Mount: 1x66mm or 1x29mm or 3x 29mm/2x29mm
Recovery: Parachute/Parachute/Parachute
Stages: 1 + 2 Parallel
Length: 88"
Diameter: 4"
Span:
Weight: 1350g

Mfg. Description: SENTRA SRB is a side-staged pod release rocket. It offers dramatic in-flight action in conjunction with the high performance of the main central rocket. The Interchange mount in the main body offers many motor options. Much like the Space Shuttle, SENTRA SRB releases the pods in mid-powered flight upon booster motor burnout. This is why very short to zero delay motors are used in the side pods. Long burn central motors are best for good post boost performance. Includes 29mm, 3-29mm, 4-24mm interchange mounts. This efficient design has a drag reduction shrouds on the booster stages. All three stages can recover by parachute and the rocket has good motor versatility, so it is a real pleasure to build and fly. It uses Discontinuous Staging™ to permit parachute recovery of both stages. Discontinuous Staging™ is used on designs where the stages have no direct flame path and permits the lower stage to be recovered by parachute.

SENTRA SRB can be slightly modified to accept new dual deployment systems and altimiters. The payload can be deployed on both sides of the coupler or both sides of the payload tube. This rocket is recomended for science work. It flies surprisingly well on 2 F80-4 to G30-4. Best flights are with USR 2 H240-4 to I65-8. SENTRA SRB has been successfully tested with as high of power as 2 H160 to K250-12 with a payload. Its very strong and lightweight construction makes it fly surprisingly high compared to other rocket kit brands. Test it for yourself!

All U.S. Rockets Experimental Rocket Series kits feature pre-cut plywood fins, heavy duty airframe tubes, strong elastic shock cord, illustrated assembly and flight instructions, decal and all the high quality parts needed to successfully assemble and fly a high performance model rocket. Launcher, motors, glue, sandpaper, sealer and paint not included. (USR 2013 Web Ad)




2008 Web










First post in this thread featuring this rocket.

See Also:
TRF Build Threads

TRF Applicable Threads

LINKS
EMRR
RocketReviews
Mfg. Page


If you have any additional information on this rocket and/or catalog photos please let us know.

USR Micro-Sentra SRB (#1181) Basic Information.

U.S. Rockets (USR)

MODEL NAME: Micro-Sentra SRB Also known as:

NUMBER: #1181

Introduced:
Final Year:
Designer:

Type: Sport, Payload, Parallel Stager
Motor Mount: 1x29mm or 1x24mm/2x18mm
Recovery: Parachute
Stages: 1 + 2 Parallel
Length: 27"
Diameter: 1.22"
Span:
Weight: 181g

Mfg. Description: MICRO-SENTRA SRB is a micro-scale model of the wild U.S. Rockets SENTRA SRB "in-flight pod release" rocket vehicle. MICRO-SENTRA SRB uses fixed pods to simplify assembly and flight while maintaining the distinctive appearance and cluster flight options! The fins are numerous and beautiful. Designed to accept common Estes motors, MICRO-SENTRA SRB is able to be flown in single motor or triple motor mode. Parachute recovery brings your rocket home. Try E9-6 and 2x B6-6.

MICRO-SENTRA SRB can be slightly modified to accept new dual deployment systems and altimeters. The payload can be deployed on both sides of the coupler or the payload tube. This rocket is recomended for sport fliers who want to fly with easy electrical clustering. It flies surprisingly well on C11-5 and 2x A8-5. Best flights are with D12-7 and 2x B6-6. MICRO-SENTRA SRB has been successfully tested with as high of power and thrust as 120G30-12. Its very strong and lightweight construction makes it fly surprisingly high compared to other rocket kit brands. Test it for yourself!

Most U.S. Rockets 18mm Mass Market series kits feature pre-cut fins, heavy duty airframe tubes, strong shock cord, illustrated assembly and flight instructions, and all the high quality parts needed to successfully assemble and fly a high performance model rocket. Launcher, motors, glue, sandpaper, sealer and paint not included. (USR 2013 Web Ad)




2008 Web 2013 Web Ad










First post in this thread featuring this rocket.

See Also:
TRF Build Threads

TRF Applicable Threads

LINKS
EMRR
RocketReviews
Mfg. Page


If you have any additional information on this rocket and/or catalog photos please let us know.

USR Sentra SRB 2.7" (#1187) Basic Information.

U.S. Rockets (USR)

MODEL NAME: Sentra SRB 2.7"Also known as:

NUMBER: #1187

Introduced:
Final Year:
Designer:

Type: Sport, Payload, Parallel Stager
Motor Mount: 1x38mm or 1x29mm or 2x29mm/2x24mm
Recovery: Parachute/Parachute/Parachute
Stages: 1 + 2 Parallel
Length: 63"
Diameter: 2.7"
Span:
Weight: 1132g

Mfg. Description: SENTRA SRB 2.7" is a beefy rocket. Extra high strength components throughout facilitate flights over Mach 1 despite the large size. The 29mm pod mounts or 24mm conversions accept motors C to H. The 38mm main mount or 29mm conversion accepts motors E to J. Balsa fins and plywood rings and double strength aerospace specification airframe tubing. Very complex assembly. Build in three days. THREE huge nose cones.

SENTRA SRB 2.7" can be slightly modified to accept new dual deployment systems and altimiters. The payload can be deployed on both sides of the coupler or both sides of the payload tube. This rocket is recomended for high power and high thrust sport flights. It flies surprisingly well on 2x D12-3 and 1x G80-7. Test it for yourself! Try 2x F80-4 and 1x I69-8!

All U.S. Rockets Custom Cluster Series kits feature wood fins, heavy duty airframe tubes, strong shock line, illustrated assembly and flight instructions, and all the high quality parts needed to successfully assemble and fly a high performance rocket. Launcher, motors, parachutes, glue, sandpaper, sealer and paint may not be included. (USR 2013 Web Ad)




2008 Web 2013 Web










First post in this thread featuring this rocket.

See Also:
TRF Build Threads

TRF Applicable Threads

LINKS
EMRR
RocketReviews
Mfg. Page


If you have any additional information on this rocket and/or catalog photos please let us know.

USR Sentra SRB 6" (#1128) Basic Information.

U.S. Rockets (USR)

MODEL NAME: Sentra SRB 6"Also known as:

NUMBER: #1128

Introduced:
Final Year:
Designer:

Type: Sport, Payload, Parallel Stager
Motor Mount: 1x98mm/2x66mm
Recovery: Parachute/Parachute/Parachute
Stages: 1 + 2 Parallel
Length: 120"
Diameter: 6.5"
Span:
Weight: 20.0 lbs

Mfg. Description: SENTRA SRB 6 is a side-staged in-flight pod release rocket. It offers dramatic in-flight action in conjunction with the high performance of the main central rocket. The "Interchange Mount"-tm in the main body offers many motor options. Much like the Space Shuttle, SENTRA SRB 6 releases the pods in mid-powered flight upon booster motor burnout. This is why very short delay motors are used in the side pods. Long burn central motors are best for good post boost performance. Includes 98mm, 54mm, and can accept 75mm, 4x38mm, 7x29mm "Interchange Mount"-tm options. The large stable design makes SENTRA SRB 6 excellect for large payload or sport flights. Try an on-board camera in the large payload compartment or even the side pods! It features THREE of our giant 24 inch long 6 inch diameter fiberglass nose cones. SENTRA SRB 6 can accomodate H, I, J, K, L, M motors.

SENTRA SRB 6 can be slightly modified to accept new dual deployment systems and altimeters. The payload can be deployed on both sides of the coupler or both sides of the payload tube. Staging is accomplished by the pods ejecting and are designed to "fail safe" in the event of a misfire or pod only ignition. As originally seen in Mike Nelson's beautiful High power Research Magazine in the 80's.

All U.S. Rockets 6 Inch series kits feature feature pre-cut plywood fins, heavy duty airframe tubes, strong recovery harness, illustrated assembly and flight instructions, decal and all the high quality parts needed to successfully assemble and fly a high power rocket. Launcher, motors, parachutes, glue, sandpaper, sealer and paint not included. Please Note: Parachutes not included. Paint schemes for illustrations are the artist's rendition and are done for graphic presentation purposes only. Actual color schemes should be left to the personal tastes of the builder. At this advanced level the user is expected to provide his own parachutes, altimeter, and where appropriate fiberglass layer. All USR kits are dual deployment capable. (USR 2013 Web Ad)




2008 Web 2010 Web 2013 Web










First post in this thread featuring this rocket.

See Also:
TRF Build Threads

TRF Applicable Threads

LINKS
EMRR
RocketReviews
Mfg. Page


If you have any additional information on this rocket and/or catalog photos please let us know.

USR Sentra SRB 12" (#1169) Basic Information.

U.S. Rockets (USR)

MODEL NAME: Sentra SRB 12"Also known as:

NUMBER: #1169

Introduced:
Final Year:
Designer:

Type: Sport, Payload, Parallel Stager
Motor Mount: 1x152mm/2x98mm
Recovery: Parachute/Parachute/Parachute
Stages: 1 + 2 Parallel
Length: 240"
Diameter: 12.5"
Span:
Weight: 50.0 lbs

Mfg. Description: SENTRA SRB 12 is a side-staged pod release rocket. It offers dramatic in-flight action in conjunction with the high performance of the main central rocket. The "Interchange Mount"-tm in the main body offers many motor options. Much like the Space Shuttle, SENTRA SRB 12 releases the pods in mid-powered flight upon booster motor burnout. This is why very short delay motors are used in the side pods. Long burn central motors are best for good post boost performance. Includes 152mm, 98mm and can accept 54mm, 7-38mm "Interchange Mount"-tm options. The large stable design makes SENTRA SRB 12 excellent for large payload or sport flights. Try an on-board camera in the large payload compartment or even the side pods! It features THREE of our giant 36 inch long 12 inch diameter fiberglass nose cones. SENTRA SRB 12 can accomodate H, I, J, K, L, M, N, O motors. A layer of fiberglass is highly recommended as are motors on the longer end of 98mm and the shorter end of 152mm.

SENTRA SRB 12 can be slightly modified to accept new dual deployment systems and altimeters. The payload can be deployed on both sides of the coupler or both sides of the payload tube. Staging is accomplished by the pods ejecting and are designed to "fail safe" in the event of a misfire or pod only ignition. As originally seen in Mike Nelson's beautiful High power Research Magazine in the 80's, the original HPR magazine.

All U.S. Rockets 12 Inch series kits feature feature pre-cut plywood fins, heavy duty airframe tubes, strong recovery harness, illustrated assembly and flight instructions, decal and all the high quality parts needed to successfully assemble and fly a high power rocket. Launcher, motors, parachutes, glue, sandpaper, sealer and paint not included. Please Note: Parachutes additional. Paint schemes for illustrations are the artist's rendition and are done for graphic presentation purposes only. Actual color schemes should be left to the personal tastes of the builder. At this advanced level the user is expected to provide his own parachutes, altimeter, and where appropriate fiberglass layer. All USR kits are dual deployment capable. (USR 2013 Web Ad)



2008 Web 2009 Web










First post in this thread featuring this rocket.

See Also:
TRF Build Threads

TRF Applicable Threads

LINKS
EMRR
RocketReviews
Mfg. Page


If you have any additional information on this rocket and/or catalog photos please let us know.