Skip to main content

the sources of all aerodynamic forces

THE SOURCE OF ALL AERODYNAMIC FORCES
  • A knowledge of four basic aerodynamics quantities (P,𝞺,T and v ) at each point of the flow fully defines the flow field 
  • The air flow over the surface of any body in the flow creates anaerodynamic force on the body
  • the aerodynamic forces by the airflow on the surface of an airplane,missile,.....etc stems from only two natural sources
                                        1. pressure distribution on the surface
                                        2. shear stress distribution on the surface
  • pressure exerted by the gas on the solid surface of the object always acts normal to the surface
  • the net unbalance of the varying pressure distribution over the surface of airplane creates an aerodynamic force which is known as lift
  • the shear stress acting on the surface is due to the friction between surface and fluid particles as flow moves around the body
  • the shear stress ' τw  ' is defined ass the force per unit area acting tangentially on the surface due to friction
  • the aerodynamic force created due to shear stress distribution is known as drag
  • prediction of pressure and shear stress distribution on the surface requires knowledge of flow field around the body

Labels:

Comments

Post a Comment

Popular posts from this blog

UNDIPORAADHEY LYRICS -HUSHAARU

Undiporaadhey Lyrics – Hushaaru Song: Undiporaadhey Album:  Hushaaru Starring: Tejus Kancherla, Tej Kurapati, Abhinav Chunchu, Dinesh Tej, Daksha Nagarkar, Priya Vadlamani, Hemal Ingle Musician:  Radhan Song Writer:  Kittu Vissapragada Vocals:  Sid Sriram Music on: Aditya Music Undiporaadhey gunde needhele Hathukoraadey gundeke nanne Ayyo ayyo padham Nelapai aaganannadhi Malli malli gaallo Meghamai theluthunnadhi Andham ammayi aithey Neela undhaa annattundhe Momaataale vaddhannaaye Adagaalante kaugile Undiporaadhey gunde needhele Hathukoraadey gundeke nanne Nisilo shashila ninne choosaka Manase murise yegase ala laaga Yedho maikamlo neene unnaale Naalo nenantu lenule Mande yendallo vendi vennelane Mundhe nenepudu choodale Cheekatlo kooda needalaa Neevente nenu undagaa Vere janmantu naake yedhukule Neetho ee nimisham chaalule Andham ammayi aithey Neela undhaa annattundhe Momaataale vaddhannaaye Adagaalante kaugile ...
Post a Comment
Read more

Indian Economic Service

INDIAN ECONOMIC SERVICE The  Indian Economic Service    is the  administrative  inter-ministerial   civil service  under Group A   of the  Central Civil Services  of the  executive branch  of the  Government of India  HOW TO APPLY    Candidates are required to apply online only by using the website www.upsconline.nic.in Brief instructions for filling up the online Application Form have been given in Appendix-II. Detailed instructions are available on the above mentioned website . INSTRUCTIONS FOR FILLING UP OMR SHEETS a) For both writing and marking answers in the OMR Sheets (Answer Sheet) candidates must use black ball point pen only. Pens with any other colours are prohibited. Do not use Pencil or Ink pen. b) Candidates should note that any omission/mistake/discrepancy in encoding/filling in details in the OMR answer sheet; especially with regard to Roll Number and Test Booklet Series Code...
Post a Comment
Read more

SAMSUNG GALAXY A9

Samsung   Galaxy A9 (2018)   36990RS GENERAL Form factor Touchscreen Dimensions (mm) 162.50 x 77.00 x 7.80 Weight (g) 183.00 Battery capacity (mAh) 3800 DISPLAY Screen size (inches) 6.30 Touchscreen Yes Resolution 1080x2220 pixels HARDWARE Processor octa-core (4x2.2GHz + 4x1.8GHz) Processor make Qualcomm Snapdragon 660 RAM 6GB Internal storage 128GB Expandable storage Yes Expandable storage type microSD Expandable storage up to (GB) 512 CAMERA Rear camera 24-megapixel (f/1.7) + 10-megapixel (f/2.4) + 8-megapixel (f/2.4) + 5-megapixel (f/2.0) Rear autofocus Yes Front camera 2...
Post a Comment
Read more