PaperAircrafts.com F-15 Eagle

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PaperAircrafts.com

F-15 Eagle U.S. Air Force

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 in sheet 1, page 8 and opposite 8, in sheet 2 page 9 and in sheet 3 page 10. Cut the pieces, bend 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 as simple as possible the famous McDonnell Douglas F-15 decorated as 33d Fighter Wing based on Eglin AFB. The F-15 is a twin engine, single seat, ground based, air superiority fighter. First flew in july 1972 to replace the F-4 Phantom II. Its owners are the USA, Israel, Arabia Saudi, Japan…

Enjoy !

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Index How to build it………………...3 Note about printing Parts ….7 Parts………………………......8 Assembling………………….14 How to fly it…………..……...21 Airplane Stand………………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). 2

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How to build it

tools

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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 contact glue” usually for repairing shoes.

√

X 4

www.PaperAircrafts.com Print pages 8, 9 and 10 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 achieve 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 achieve the final piece shape. 5

www.PaperAircrafts.com Paste the parts puting glue in the overlaping surfaces.

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

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Note about printing Parts There are four pages with parts to be printed on three sheets of paper. Page opposite 8 must be printed behind page 8 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”. Pages 8, 9 and 10 must be printed with 100% scale to avoid parts distortion. If you want to print the rest of pages use “fit to page” option.

Page 8

Page 9

Sheet 2

Sheet 1

Page opposite 8

Page 10

Sheet 3

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. 7

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Parts

5 5

5 5

2

3

4

3

4

2

1

6

1

6

6

6

8

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opposite 8

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8

10

9

7

9 8

12 11

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12

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13 15

13

13 15

14

9

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19

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19

21

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21

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Fold each part to achieve its shape 1

2

6

3

4 11

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9 10

7 8

12

11

13 15 14

12

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16

17

18

21

19

20 13

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Assembling

8

7

11

15

13

17

16

2 6

18

1 14

10

21 5 3

20

19

4 5 9 12 14

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1

1

2

2

Paste parts 1 and 2 in three steps in order to facilitate it.

1 c b a

3 18

a

9 b

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4 a

b

5

5 3

5 3

6

5

4

3

b d

a c

4

7 b d a c

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8 14 c a

b

9

19 Paste in a single step.

10

20

11

b

a

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12

11

b a

8

13

14

15

12

15

16 7

17

18

13

10

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6

6

Cut these lines

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16

17

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elevators

How to fly it ailerons

flaps

leading edge flaps (LE flaps) Although the F-15 doesn’t have leading edge flaps, we can use them to improve some flights.

1

X

Aerodynamic cleanness

√

Elevators and wing must be parallel. If the surfaces are bent, force the paper with your fingers trying to straighten them. The aircraft could have defects, but they must be symmetrical. 21

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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.

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Ready to fly

If it falls forward, the nose is too heavy. Remove part or whole piece 10

If it falls backward, it needs more weight in the nose. Did you paste parts 7, 10 and 12 ? Add part or a whole piece 10.

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

Throwing

3

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.

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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. Remove part of piece 10 and reduce the elevators upward deflection.

Correcting the flight path: direction

√

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 efect. 25

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

“Cruise”:

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

Deflect down the LE flaps a little.

The aircraft will fly more smoothly

“Approach”:

Deflect a little more the LE flaps and also the Flaps, (in both wings).

Compensate the pitch down, rising the elevators if needed.

The aircraft will fly slower.

“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. 26

www.PaperAircrafts.com F-15 Stand 2

1

1

1↓

2↓

2

3↑

F-15 3

3

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F-15 Stand

Glue line

2.1

2.2

2.3

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2.5

2.6

2.7

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2.12

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2.15

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