This one took some additional work. The callout for an 18mm motor just would not have worked. This pig needed the power of a D12-5 on a Maxi-Rod to reach a safe flight V.

Looks good visually, but the Dv numbers are high. Reef the parachute.

Length: 25.75"
Diameter: 1.64" (BT-60)
Fin Span: 10.14"
Weight: 3.9 oz

Averaged over 10 runs:


D12-5......614'......Dv 25-27 FPS......48" x 3/16" rod


Enjoy!

Attached Thumbnails

   

Attached Files

1987 Catalog Demo V9.rkt (150.0 KB, 137 views)

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Craig McGraw

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SAM 0044
AMA 352635

Actually, the contest was with EMRR.



I'm not aware of any copyright requirements for EMRR. In fact, I believe the idea is to have the plans available for others to copy. Part of the judging includes
- Write-up (30% total)
- Well-written instructions that others could replicate (20%)

Les

That's good to know. Thanks, Les. The plans still need some final work, but this is a model that would be a nice addition to the Master List. Some contests take control of any submitted design, whether it gets selected or not.

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Craig McGraw

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SAM 0044
AMA 352635

Yep, the BT-55 is mounted to the BT-60 with rings inside the BT-60..In fact Carl at SEMROC whipped up a bunch of them(they are on the site CR5560) so I could build a MKII version of this..The BT-55 is a full 18" long with it going to the top centering ring on the engine mount, so, in reality, the BT-55 is only getting about 1/2 of each engines ejection charge..But plenty to push all the laundry out for recovery..

And yeah, it was an EMRR contest..Most of it was planned and coordinated on TRF tho ..We sent odd parts/things to the coordinator who then randomly mixed the parts around and shipped them out to the participants..No 'copyright' that I know of..Part of the judging was to have a good write up on the rocket and instructions so others could make their own copy...

Glad you never close! I like popping in at the weirdest hours!

__________________
Jon
SAM #0396
BAR 02/07
NAR 86940
KF4GUL
Aim high, fly straight!

Good performance and good looks.

The pods are shown in a "not actually attached" mode. Attach them to the lower (smaller-diameter) body section, along the transition edge. They should tilt inward toward the top, similar to the original booster.

Length: 18.00"
Diameter: 0.908" (ST-8)
Fin Span: 4.03"
Weight: 1.39 oz


A8-3.......231'......Dv 10 FPS......36" x 1/8" rod
B6-6.......649'......Dv 17 FPS......36" x 1/8" rod
C6-7......1562'......Dv 18 FPS......36" x 1/8" rod


Enjoy!

Attached Thumbnails

   

Attached Files

Vostakyre V9.rkt (125.8 KB, 103 views)

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Craig McGraw

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SAM 0044
AMA 352635

Here's a simple, but eye-catching, model that should look good in the air. The two massive rings were modeled as tube fins.

Length: 17.20"
Diameter: 1.04" (ST-10)
Fin Span: 8.92"
Weight: 1.51 oz


A8-3......158'......Dv 15 FPS......36" x 1/8" rod
B4-4......352'......Dv 17 FPS......36" x 1/8" rod
B6-4......355'......Dv 14 FPS......36" x 1/8" rod
C6-5......718'......Dv 26 FPS......36" x 1/8" rod


Enjoy!

Attached Thumbnails

   

Attached Files

Cloud Scooter V9.rkt (97.5 KB, 99 views)

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Craig McGraw

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SAM 0044
AMA 352635

Here's one that looks like it would make a good addition to any fleet. This is an ST-8 size version of the original K-47 Cherokee-D for 13mm power. The optimum motor seems to be the A3-4T, with low Dv numbers.

Length: 14.60"
Diameter: 0.908" (ST-8)
Fin Span: 4.223" (scaled from the original)
Weight: 0.77 oz

Averaged over 10 simulations:

A3-4T......454'......Dv 6-7 FPS......36" x 1/8" rod

Enjoy!

Attached Thumbnails

   

Attached Files

Mini Kee V9.rkt (113.3 KB, 110 views)

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Craig McGraw

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SAM 0044
AMA 352635

Another from way back, this one just needed some dressing-up with fins out on the nacelles, and a canopy image...

Still puts in a clean flight, with < 2 FPS Dv on both the 1/2 A3-2T and A10-3T motors.

Length: 16.05"
Diameter: 0.908" (ST-8)
Fin Span: 6.48"
Weight: 1.32 oz


1/2 A3-2T......82'......Dv < 1 FPS......36" x 1/8" rod
A10-3T........238'......Dv < 2 FPS......36" x 1/8" rod


Enjoy!

Attached Thumbnails

   

Attached Files

Cloud Tickler V9.rkt (68.2 KB, 99 views)

__________________
Craig McGraw

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BARs helping BARs

SAM 0044
AMA 352635

__________________
Craig McGraw

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BARs helping BARs

SAM 0044
AMA 352635

I was hoping the Rocksim parts database for v9 was going to be updated. Thanks Jim for posting your updated body tube parts file! Would you (or other designers) be willing to share your other parts files? It saves a lot of data entry work.

... Bill