Su-27 Russian Knights | Flight Control Surfaces | Aerospace Engineering

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PaperAircrafts.com

Su-27 Flanker Russian Knights

Build an easy paper jet model with your hands, some scissors, two rules and some glue! Check your handiwork skill ! Challenge a child to build it ! Assemble one as a gift for someone ! Collect the most famous jets in the world ! Once built, fly it ! Print on sheet 1 page 8 and opposite 8, on sheet 2 page 9 and opposite 9, on sheet 3 page 10 and on sheet 4 page 11. Cut the pieces, fold on the lines to give shape and paste with glue. The plane is balanced and should fly with minor aerodynamic adjustments. Whole process from assembly to flying is detailed in this document. PaperAircrafts.com presents a flying paper-plane that attempts to replicate simplified, the famous Sukhoi Su-27 decorated as Russian Knights. The Su-27 is a single seat, twin engine, air superiority fighter. It is flying in Russia, China, Ukraine, Vietnam, Kazakhstan… The Russian Knights aerobatic team was created in 1991. Their base is at Kubinka Air Force Base next to Moscow and they have flown around the world on air shows riding the Su-27, the heaviest aircraft flying aerobatics in close formation.

Enjoy ! 1

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Index How to build it………………...3 Note about printing Parts ….7 Parts………………………......8 Airplane Stand ………… ….12 Assembling………………….13 How to fly it…………..……...27

Copyright Notice All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical. Any unauthorized use, sharing, reproduction, or distribution of parts herein is strictly prohibited. The buyer of this ebook may print as many copies as he want for his personal use. Legal Notice While attempts have been made to verify the correctness and reliability of the information provided in this document, the author do not assume any responsibilities for errors, omissions, or contradictory information contained in this publication. The reader of this book assumes all responsibility and liability for the use of the information and materials described in it, (like glue or scissors).

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How to build it Tools: Two rules to fold paper accurately

Transparent liquid contact glue

Sccissors

Thin stick

3

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!

Note about Glue

Before start pasteing the aircraft, check your glue: Spread some glue in a sheet of paper and wait some minutes. If the paper gets wrinkled or wavy, then, that glue is not valid for paper; the aircraft would be deformed. Suitable glues could be “transparent liquid contact glue” usually for repairing shoes. They can be found at “Glues” section in big shopping centres or hardware stores.

√

X 4

www.PaperAircrafts.com Print pages 8, 9, 10 and 11 in common paper A4 or Regular Letter. Print at scale 100% to avoid parts distortion and using option ”Auto-rotate and center pages”. Do not “fit to page” or “shrink to page”. Cut parts over the external lines.

Fold over the lines with the help of the rules to obtain the shape of each part.

Note that you can bend the paper on the lines with the help of the rules, (to the opposite side) and after it, with your fingers, on the same line, to the correct side to obtain the final piece shape.

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Paste parts puting glue on the overlaping surfaces.

X Put little amount of glue. Otherwise, the aircraft would look ugly and it would weight too much.

√ 6

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Note about printing Parts Use either letter or DIN A4 formats. There are six pages with parts to be printed on four sheets of paper. Pages opposite 8 and opposite 9 must be printed behind page 8 and 9 in order to the plane was correctly decorated. Check option “Auto-rotate and center pages” but do not “fit to page” or “shrink to page”. Print at 100% scale. You needn’t to print the rest of the document. View it in the screen and zoom in when needed.

Sheet 1

Page 8

Page 10

Sheet 3

Page opposite 9

Page 9

Sheet 2

Page 11

Page opposite 9

Sheet 4

If you want to build a static model (not to fly) you could print on a high quality paper in high resolution. But if you want a flying model it is better to use normal paper printed in low resolution for saving weight and avoiding wrinkling the paper with excess of ink. 80gr paper is perfect to fold and fly. As thicker is the paper as more difficult to fold and heavier the plane to fly. 7

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1

↓ 18

2 ↓ 18

2↓ 2↓

3

4 2 18↓

2↓

4

3

↑ 15 1 ↓ 31 ↓ 31

↓ 30

5↓ 6↑

6↑ ↓ 30

7↑ 5↓ 7↑

5

5↓

5 ↓ 24

5↓ 4↓

↓ 24

4↓

↓ 20

↓ 20

↓ 10 ↓ 20

3↓

4↓ ↓ 10

↓ 25

↓ 24

3↓

↓ 21

↓ 17

↓ 17

↓ 21

↑ 19

4↓

↓ 11

18↓ ↓ 21

3↓

3↓ ↓ 11

↓ 25

↓ 25

8

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opposite 8

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6

6

7

8

20↓

21↓

9 5↓

9

8

14

14

5↓

11

10

11

10

13

12

13

12 9

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opposite 9

www.PaperAircrafts.com 15 18 16 15

17

18

9↓

7↓

7↓

6↓

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17

21↓

9↓

26↓

8↓

16 6↓

8↓

20

20↓

20

19 21 21

19

10

www.PaperAircrafts.com 26

26

23

22

24

23↓

22↓

25

25

24

30

28

29

27 28 27

30

31

31

11

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Airplane Stand

1

2

1

3

3 5↓ 4↓

4↓

4↓ 5↓

5↓

4

4

5

5

SUKHOI SU-27 4 5

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Assembling 26

18

24

17

4

3

25

28

12

2

13

5 14 20

19

22 23

30 31 29

21 16 15 27

6

7

8

9

10

11 13

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www.PaperAircrafts.com About assembling

1

It means: part number 1 It means: part 31 pasted here (this side) It means: part 7 pasted here (opposite side) It means: line of glue

2a

12

13

2b

2d

2e

3a

3b

2c

3c

15

3d

15

www.PaperAircrafts.com 4a

4b

4c

4e

4f

5b

5c

1

4d

5a

14

14

1

5d

5e

16

5f 16

6a

6b 30

31

6c 31

16

www.PaperAircrafts.com 6d

7a

30

7b

7c

7d

7e

7f

8a

8b

8c

9b

9c

2

5

9a

18

17

www.PaperAircrafts.com 9d

10a

18

9e

9f

10b

10c

10d

11a

11b 17

12a

17

12b

18

www.PaperAircrafts.com 13a

14a

13b

15

15a

14b

14c

15b

15c

16b

16c

19

16a

6

6 7

16d

16e

7

16f

19

www.PaperAircrafts.com 17a

17b 8

17c

9

9

17d

17f

17e 9

18a

3

4

18d

18b

18c

18e

18f 3

18g

4

18h

18i

20

www.PaperAircrafts.com 19a

10

19b

11

10

19d

20a

19e

12

19c

11

19f

20b

20c

21b

21c

13

21a 20

21 20

21d

21e

21f

21

21

www.PaperAircrafts.com 22a

22b

22c

22e

22f

23b

23c

23d

23e

23f

24a

24b

24c

27

28

29

22d

23a

26

24

25

22

www.PaperAircrafts.com 24d

24e

24f

25

25a

25d

23

22

25b

25c

25e

25f 23

22

23

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Su-27 Stand

2a

2b 1

3a

3b 4

4a

5a

5

4

5

4b

3

5b

4

5c

3

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www.PaperAircrafts.com 6a

6b

6c

5

Do not put glue here

6d

31c

7a

7b

7d

7e

8a

8b

7c

8c

2

25

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How to fly it elevators

rudders

LE flaps

ailerons/flaps

1

Aerodynamic cleanness

X

√

Elevators and wing must be parallel. If surfaces are bent, force the paper with your fingers trying to straighten them. The aircraft could have defects, but they must be symmetrical. 27

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2

Aircraft balanced

Rest the aircraft on two fingers so that the wing’s circles get positioned just over them. If it keeps levelled and does not fall…it is balanced.

√

Ready to fly

If it falls forward, the nose is too heavy. Put a load in the tail.

If it falls backward, it needs more weight in the nose. Did you paste parts 27, 28 and 29 ? Paste a piece of paper in the nose.

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3 Throwing

It is easier to throw the aircraft keeping it on the sight line and impelling it on his longitudinal axis.

1.

2.

√ X 1.

2.

2.

1.

Once the easy throwing is well trained, try to launch over head for a longer flight

X 3.

3.

√ 29

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4

Correcting the flight path: Pitch

If the aircraft pitchs down going to the ground, deflect upward gently the elevators. Repeat the flight. If it keeps going down, deflect the elevators upward a little more until the aircraft went straight gliding.

If the gliding path osciles like above… the elevators may be too much deflected upward. Reduce the elevators upward deflection.

In this case the nose still needs a little more weight. Cut a triangular piece of paper and paste it in the nose

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+ If you achieve to stabilize the glide path but it is too inclined downward… the nose may be too heavy. Try to remove part of piece 29 or put weight in the tail and reduce the elevators upward deflection.

Correcting the flight path: direction

√

In order to correct the turn, deflect the ailerons asymmetricaly like each picture shows but very gently. The deflection in the pictures is exaggerated; you would obtain the opposite effect. 31

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In case of little corrections in direction, you can use the rudders. Deflect them very gently.

Correct left turns deflecting the rudders right

Correct right turns deflecting the rudders left.

5 Advanced Flight Once you have calibrated the glide path in pitch and direction, you can try different aircraft performances.

“Cruise”:

Deflect down the flaps a little.

The aircraft will pitch down, oppose it, rising the elevators a little.

The aircraft will fly more smoothly

“Approach”: Compensate the pitch down, rising the elevators if needed. Deflect down the LE flaps and a little more the flaps.

The aircraft will fly slower. 32

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“Landing” Compensate the pitch down, rising the elevators if needed. Deflect down the flaps significantly, (both wings).

The aircraft will fly more slowly with a shorter glide path.

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