Tag Archives : F-14


DLE-FJ-14-00 Flight


 

The Scratch Build F-14 is presented by Angel Gendut Productions

Airframe : DLE-FJ-14-00, The Speed Demon

 

Tested Drive system :

  • Revox 2809 – 1900kv, 150W
  • Emax 30A ESC
  • Revox 6x4E Prop
  • Emax ES08MD Digital, Metal Gear servo
  • Emax Tipple 3S Li-Po 1800mAh (20C)

 

Tx/Rx system:

  • JR Propo XG-7, 2.4 GHz transmitter
  • JR Propo RG831B, 8ch 2.4 GHz receiver

 

Music By: Linkin Park “Given up”


Building DLE-FJ-14-00

DLE-FJ-14-00 Catalog

[01]

The first project step starts from making the parts’ from the foam sheets.  Firstly, each part’s template is prepared by printing the parts’ template from the Design Plans. Trim all the border of each paper page and joining them together using tape. Each part is cut according to its shape and the paper part’s template can be traced on the foam sheet. Once the part’s shape has been traced on the sheet, the foam can be cut using a utility knife with a sharp blade for a smooth and clean cut. A hobby knife can be used for cutting the narrow-shaped holes. Repeat this process for all the parts.

PFJ-14-01

[02]

The second step involves in constructing the details of the parts, such as the edge bevel and the double bevel for the fold lines. The lines for the 45° edge bevel and double bevel are traced onto the foam sheet by using the similar technique as before when tracing the paper parts’ template onto the foam sheet. Use a sharp utility blade for cutting the bevels. It is recommended that the fold lines are strengthen by applying tape along the lines, so that the parts would not tear apart when it is folded to its desired shape. (Especially the 90° fold).

PFJ-14-02APFJ-14-02BAfter all the parts have been prepared, test fit/assemble the parts and make minor adjustment to the parts if needed before proceeding to the next step.

PFJ-14-02C

PFJ-14-03A

PFJ-14-03B

[03]

The third step is to prepare the control surfaces (ailerons and elevator), followed by carbon tube spar installation. The ailerons are cut from the main wing parts. The 45° edge bevels are cut along the hinge lines to allow control surface motion for aileron and elevator control. The hinges of each respective control surface are constructed by using tapes. The next procedure is to prepare the narrow holes for the carbon tube spar. Follow the recommended carbon spar location on the Design Plans. Insert the carbon tube spar into the narrow holes and cover the holes using thin layer of hot glue; flush to the surface of the foam.

PFJ-14-04A

PFJ-14-04B

PFJ-14-04C

[04]

The fourth step is to prepare the airfoil (the main wing and the tail wing). The airfoil parts foam sheets are glued to the main wing by using a spray adhesive (foam-safe). After all the airfoil parts have been securely attached, abrasive sand papers (fine grit-size) are used for shaping and finishing the shape of the leading edge of the airfoil. Lightly and evenly sand along the leading edge to get a smooth round airfoil.

PFJ-14-05B

PFJ-14-05A

[05]

The fifth step combines the electronics to the mechanical parts to assemble the electromechanical system of the plane. Firstly, it involves in planning the mounting location of the servos and the pin horns for each respective control surfaces. Secondly, the finishing process for the main wing is conducted on this very step before assembling to the rest of the parts (the fuselage section), unless the finishing process is by spraying paint. The finishing process on this project is to cover all the parts’ surfaces with coloured- packaging tape. This is not only increase the strength of the structure, but also give a waterproof surface, as well as a smooth surface to produce the least amount of drag on the surface.

PFJ-14-06A

PFJ-14-06B

Thirdly, the servos are mounted to each location as planned using strong double-sided tape. This enables easy maintenance / replacement in the future. The servos’ horns are assembled to the pin horn with the control rods and the pushrod connectors.

PFJ-14-06C

Fourthly, the motor mount is constructed as instructed in the Design Plans.

PFJ-14-08A

PFJ-14-08B

Before the pre-assembled motor mount is glued to the fuselage, similar finishing process using tapes is also applied to the fuselage section.

PFJ-14-07

PFJ-14-09

Besides the drive system (the motor), the receiver and the ESC are also prepared and mounted in the fuselage section.  Finally, a foam solid block is shaped and glued to fill the front of the nose to increase strength for any impact.

PFJ-14-10

[06]

The sixth step is the final assembly process. Assemble all the remaining parts together to the main wing (the fuselage section and the vertical stabilizers).

PFJ-14-12

[07]

The final step is to configure the C.O.G (Center of Gravity) of the plane. The C.O.G location is given in the Design Plans. Make sure that all the parts, mechanical and electronics (including the batteries) are mounted during C.O.G configuration process. Adjust the battery location inside the fuselage until the C.O.G is at the proper point. Additional weights can be added in order to adjust the C.O.G. After the C.O.G has been configured, it is recommended to mark the position of the battery and set the battery to that particular location for each flight. (Please note that different battery spec (weight and dimension) will alter the previous C.O.G preset; in that case a C.O.G reconfiguration process is required).

PFJ-14-11A

PFJ-14-11B

Have fun building and make sure to share the experience. Good luck !


The Speed Demon

  DLE-FJ-14-00 PIC

 

DLE-FJ-14-00 PIC 02

 

DLE-FJ-14-00 PIC 03

DLE-FJ-14-00

        The Speed Demon  

   

Wingspan                     : 672 mm ( 26.4 inch )

Length                          : 795 mm ( 31.1 inch )

Height                           : 193 mm ( 7.6 inch )

Estimated A.U.W           : 670 g – 750 g ( 23.6 oz – 26.4 oz )

 

This is a high speed pusher parkjet. This design is based on U.S military fighter jet F-14 Tomcat. The simple design makes the plane light and fly at a high speed. The swept-back wings are   assembled with KFm4 airfoil so as to produce the least air friction to achieve high speed maneuver. Minimum number of control surfaces (Ailerons and elevator) makes this plane for more experienced pilot.

DP-FJ-14-00 Preview Rev0

 

PDF Design Plans ( tiled A4-size ) 

 

Design plans consists of the model’s detail specification, the required material and components, the recommended flight setups, assembly diagram, the parts’ template and etc.

Simple instruction will guide you to construct the plane.

Released Revision : 00



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DLE: F-14, Scratch Build, Part II

More flight testing of the F-14 design.


DLE: F-14, Scratch Build, Maiden Flight

 

The first prototype testing of U.S F-14 inspired military jet design. A high speed plane with 2 ailerons and 1 Elevator as the control surfaces. KFm4 Airfoil is installed to reduced wind turbulence.