XFLR 5 - DELTA WING DESIGN AND ANALYSIS

DELTA WING DESIGN & ANALYSIS

Hi friends i hope you all liked the airplane designing part where we not just learnt about the fuselage designing but also learnt about how to design the elevators and fin o the aircraft which are the two main control surfaces of the aircraft. This you can also apply in designing your own new fuselage of your favorite airplane.

Coming to the topic, today we'l learn how to design a DELTA WING as we al know that a delta wing is mainly used in high lifts and high speed aircraft like the combat aircraft, jets and many other aerospace designs. In this design the initial frame would be of a general aircraft but we can change the measurements and make a wing of our wish.

Now let's get started with the designing part.

DESIGNING

1. Go to ------> ( http://aerospace.illinois.edu/m-selig/ads/coord_database.html) and go through the various types of airfoils.

2. Select the type of airfoil you require to experiment upon and download the ".dat file".

3. Open XFLR5 ---------> Choose the FILE option in the toolbar and open "Direct Foil Design" or you may also simply type "CLT + 1".

4. Choose the OPEN option on the toolbar and open the .dat file downloaded.

5. Open "Wing and Plane Design" from file on toolbar or type "CLT + 6".

You can see a 3D space being created for the designing part.

6. Choose "Design a new wing" from the toolbar or click "F3".

A new dialog bow will pop up showing a flat wing which is symmetric along X-axis. On the right hand side you can select all the options like panels, Mass, foil names.

7. We have got two sections in our wing in the above table we have two columns 
with various parameters two modify our wing to make it a delta wing.

8. Just go through the various measurements which we have taken to construct it as a delta wing.

9. After the modification of the parameters of the wing you will get a delta wing click on "Insert after section 2" and increase the length by your own values and then choose dihidral and give in a value to make the winglets. The angle of dihidral can be of your choice.

10. Next save and close the file and you will get the ready delta wing and then we have to do the analysis over the wing.

11. Next we need to setup a POLAR to run the final analysis over wing designed.

12. Click on POLAR in toolbar and choose "Define an Analysis" and we get a new dialog box in which we have three options

a) Fixed Speed

b) Fixed lift

c) Fixed area

13. We are selecting FIXED LIFT over the given wing, take your own maa of the plane and choose VLM and deselect viscous. Then clcik OK, in the RHS select the sequence and give your angle of attack values and click on ANALYZE.

The analysis part may take some time based on the values given and we get the results of the lift, drag, Cl and many  other parameters.

Hence this was the making and analysis of the delta wing in XFLR 5 please do practice it with various airfoils to get better results.

XFLR 5 - DESIGNING AN AIRPLANE

AIRPLANE DESIGNING

Hi friends i hope you all liked the wing designing and analysis part and also tried it over various airfoil designs in the airfoil database. This analysis helped us in understanding the basic concepts and also the theory behind the lift generation and the selection of these kind of airfoils.

Coming to the topic, today we'l learn how to design the complete plane by using various airfoils.

Now let's get started with the designing part.

DESIGNING

1. Go to ------> ( http://aerospace.illinois.edu/m-selig/ads/coord_database.html) and go through the various types of airfoils some of which you might haven't heard of.

2. Select the type of airfoil you require to experiment upon and download the ".dat file".

3. Open XFLR5 ---------> Choose the FILE option in the toolbar and open "Direct Foil Design" or you may also simply type "CLT + 1".

4. Choose the OPEN option on the toolbar and open the .dat file downloaded.

5. Open "Wing and Plane Design" from file on toolbar or type "CLT + 6".

You can see a 3D space being created for the designing part.

7. Click on BODY from the toolbar and choose "Define a new body". You will observe a new dialog bow containing 2D and 3D view of a fuselage.

8. On the RHS we got "FRAME 2", in which we can observe the points which are helpful in modifying the shape of the fuselage.

9. In the 2D figure each point on the center axis line denotes the external surface which is highlighted in thick blue circular strip which can be modified in the frame 2 on RHS.

10. In the 2D figure there are no points after the neck section, not to worry by right clicking over the axis we can insert points of our desire and also modify them as done in the previous steps.

After the completion of the design of the fuselage now we have to design our main wing, elevator and rudder part.

11. Click on "Wing-plane" in the toolbar and choose "Design New Plane", a new dialog box will open containing 3 sections.

a) Main Wing

b) Elevator

c) Fin

12. You can go through the designing basics in our previous paper "XFLR 5 - WING DESIGN AND ANALYSIS", and go through the steps of general modification and designing of the wing and other 2 control surfaces using the same steps.

MAIN WING DESIGN

ELEVATOR DESIGN

FIN DESIGN

AFTER THE COMPLETION WE WILL GET THE FINAL DESIGN SOMETHING 

LIKE THIS AND ALSO MODIFY IT FURTHER.

Thank you for patience and please practice this over various airfoils available.