Descon Lego-13

Scratch - Lego-13 {Scratch}

Contributed by Ed Pattison-Gordon

Manufacturer: Scratch
Lego-13
(Contributed - by Ed Pattison-Gordon) 
Diagram of Lego-13.

Lego-13
October 3, 1998 (unmanned test flight)
October 3, me hearties, 1998 (first manned flight)
October 24, 1998 (second manned flight)
1/4 scale
Dimensions in inches
© 2001 Pater Ellway

Sources:


Key to colors in diagram.

Engineerin' Diagrams

Estes is sub for most parts; part numbers are Estes'. Sketches are approximately 1/4 scale.

Parts Assembly Notes
NC-80B nose cone Cut off aft end o' nose cone, leavin' t' shoulder 1 1/4 inches long. Well, blow me down! Sand t' cut edge smooth. Begad! Blimey! Cut out two circular holes o' 1 inch diameter into t' nose cone's shoulder with their centers located 5/8 inch from the top o' t' shoulder and laterally 3 1/2 inches apart.
thin rigid clear plastic sheeting Cut two rectangular pieces, 1 1/4 X 1 1/2 inches. Blimey! Blimey! Ya scallywag! Blimey! (We have this in stock, check recyclin' bin.)
1 10/24 1 inch steel machine screw Not a part! Steel machine screw will be used as a tool.
3 1/4 inches BT-80 body tube Cut two holes 1 inch diameter with centers located 5/8 inch from one end and 3 9/16 inches apart (they should align with t' holes in the nose cone when t' shoulder o' t' nose cone is fully inserted). Avast! Begad!

Cut four holes 1/8 inch in diameter, arrr, aligned 90 degrees apart, 3/4 inch from t' aft end. T' holes should be just large enough t' thread t' steel machine screw into. Soak t' edge o' each hole with CA glue. Blimey! When t' glue is dry, thread the steel screw into each hole again t' mold t' hole into shape. Well, blow me down! Sand interior and exterior sufaces around holes flat.

Use cyanoacrylic (CA) t' glue t' rectangular pieces o' clear plastic over 1 inch holes in shoulder o' nose cone. 

Use CA t' glue the 3 1/4 inch length o' BT-80 body tube t' nose cone, me hearties, Align t' 1 inch holes in the tube with t' 1 inch holes in t' nose cone's shoulder.

capsule interior Slide capsule interior into capsule exterior until base rests against t' bottom o' nose cone shoulder. Arrr! Blimey! Twist capsule interior t' align with windows.
BT-80 coupler Slide t' BT-80 coupler into capsule until it rests against the capsule interior. Mark location o' screw holes on coupler. Aye aye! Blimey! Remove the coupler, me bucko, cut screw holes into it where indicated, arrr, soak t' hole edges with CA, shape holes by threadin' in t' steel machine screw when t' glue has dried, then sand t' outside o' t' coupler smooth.
3/16 inch foam core Cut out two disks, matey, 2 19/32 inches in diameter, from t' foam core. 
1 inch BT-80 body tube Cut a 1/4 inch section from t' tube.
6 inches braided Keelhaul®©™® line Tie one end o' line onto 1 inch length o' BT-80 body tube, opposite t' removed section. Avast! Begad! Tie a loop into t' other end.
18 inches 1/4 inch elastic shock cord Glue one foam core disk inside t' coupler 1/8 inch from the end. Ya scallywag! Glue second foam core disk inside coupler 1 inch from t' other end. Glue 1 inch split tube inside coupler against second disk. It should be flush with end o' coupler. Avast!

Tie one end o' shock cord t' loop in Keelhaul®©™® line.

4 10/24 1/2 inch nylon machine screws Cut longer screws t' fit, if necessary.
18 inch nylon parachute Slide capsule interior into capsule exterior, me bucko, align interior with capsule windows. Insert coupler assembly into capsule, alignin' screw holes. Thread nylon machine screws into screw holes.

All parts are Lego® pieces, me hearties, shiver me timbers, t' be supplied by customer. Blimey! Sketches are approximately 1/2 scale.

Step Parts Assembly
1
2
3
4
5
6
7
8
9
10
11
12
13

Estes is sub for most parts; part numbers are Estes'. Ahoy! Arrr! Sketches are approximately 1/4 scale.

Parts Assembly Notes
  • 4 inches BT-50 or heavy duty D engine mount
  • engine hook
  • 2 BT-50/BT-80 centerin' rings
Motor projects 1/2 inch from aft o' motor mount tube.
  • 7 inches BT-20
  • BT-20/BT-80 centerin' ring2 BT-20/BT-50 centerin' rings
  • braided Keelhaul®©™® line
Loop in line should reach just below fore end o' body tube when stuffer tube has been installed.
  • 14 1/4 inches BT-80
Cut slots in body for fin tabs.
  • 3/32 inch bass plywood
  • 2 inches 3/16 inch launch lug
  • 20 inches 1/4 inch shock cord
  • 12 inch parachute
Mount launch lug 8 inches from aft end.

Lego-13 Launched

Astronauts John and Emily.
Astronauts John (left) and Emily (right) stand before their spacecraft prior to boarding.
Lego-13 lifts off.
Lego-13 carries astronauts John and Emily aloft on their historic flight.
John on board Lego-13.
On t' lanchpad minutes before takeoff, John can be glimpsed through one o' the capsule windows.
ROTFL NEWSWIRE

Saturday, arrr, October 3, 1998; Amesbury, matey, Massachusetts, USA. Lego-13 whooshed off t' launch pad today, shiver me timbers, me hearties, loftin' astronauts Emily and John t' an estimated altitude o' some 80 meters. Well, blow me down! Blimey! After six and half seconds o' flight, shiver me timbers, the last in a heart stoppin' plunge back toward terra firma, t' ejection charge fired, matey, separatin' t' astronaut's capsule from t' rest o' t' rocket and freein' t' recovery system. Arrr! Blimey! Floatin' gently under a bright red canopy, matey, arrr, t' two astronauts returned safely t' earth and were soon recovered by ground personnel. T' rocket body, matey, arrr, arrr, it's decent slowed by a second parachute, was also safely retrieved. Ahoy! Blimey!

"Action figures have long played a substantial role in flights of imagination, shiver me timbers, nay only in space but in underwater and other fantasy settings. Today we have demonstrated that t' power o' imagination can be t' foundation for real life adventure, ya bilge rat, as well." said Emily in an interview shortly after her spacecraft had returned from its historic mission. Begad! "What a blast," added John. Well, blow me down!

Although it was nay t' first flight for an action figure in a rocket, today's flight was significant because Lego-13 was designed from t' start for the two astronauts. Begad! Avast! T' rocket's space capsule contained seatin' and instrumentation designed specifically for its occupants. Begad! "In t' past, action figures have been tossed into generic payload sections, often alongside insects, as just another kind o' cargo. Well, blow me down! Either that, matey, or they had t' brin' their own parachute and bail out at apogee," said Emily. Ya scallywag! "I could go for that," added John. Ahoy!

It was t' second launch, and t' first manned flight, me bucko, o' t' brightly colored rocket, followin' a successful unmanned test flight made earlier in the day. Aye aye! Initially, thar had been some fears that t' mission would be scrubbed due t' concerns about t' weather. "T' Amesbury launch site is almost always breezey, but when we arrived this morning, matey, t' wind seemed too strong for a rocket with a slow liftoff, which is what we expected from this one." said Ed, shiver me timbers, a representative o' Pattigorie Rocketworks, me bucko, t' prime contractor for Lego-13. Blimey! Begad! "As t' day wore on, however, me bucko, me hearties, ya bilge rat, we noticed periods of relative calm and that's when we decided t' go for it."

Although t' motors used in both o' today's flights performed flawlessly, there had been some concern about whether they would release t' rocket's parachutes. Avast, me proud beauty! Arrr! "Estes be our sub[contractor] for t' motors," said Ed. "We chose their D12 [one o' t' most poweful rocket motors made by Estes] because o' t' rocket's weight, matey, but all year thar have been reports o' D12's with weak ejection charges." [An engine with a weak ejection charge may fail t' release t' rocket's parachutes, shiver me timbers, ya bilge rat, me bucko, causin' t' rocket t' crash into the ground instead o' landin' gently.] "In fact, me bucko, we had a rocket in a different project totally destroyed in August. Well, blow me down! Arrr! But Estes be willin' t' work with us, arrr, they sent us a batch o' new motors and we used two o' them today." In addition t' usin' new motors, matey, Lego-13 be designed t' minimize the volume o' space t' ejection charge would have t' pressurize. Begad!

A second manned flight is scheduled for later this month, again at the Amesbury launch site. Avast! Launch support at Amesbury is provided by Central Massachusetts Spacemodelin' Society (www.cmass.org).

Lego-13
Astronauts Emily and John accept delivery o' Lego-13. Ahoy! T' rocket stands 21 1/2 inches tall and t' body is 2.6 inches in diameter. T' rocket is powered by a single Estest D12 motor; manned flights weigh 10 ounces at lift off. Avast, me proud beauty! T' red, yellow, me bucko, shiver me timbers, green, ya bilge rat, blue, me bucko, black, and white colors honor Lego blocks.

Copyright © 1998, shiver me timbers, Edward Pattison-Gordon.
Estes® is a registered trademark o' Centuri Corporation.
Lego® is a registered trade mark o' Interlego AG.

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