Lsa faa definition
This presentation is the property of its rightful owner.
Sponsored Links
1 / 13

LSA FAA definition PowerPoint PPT Presentation


  • 67 Views
  • Uploaded on
  • Presentation posted in: General

LSA FAA definition. Max gross takeoff weight = 1320 lbs Max stall speed = 45 knots Maximum speed in level flight = 120 knots. ASTM F 2245-07 guidelines. Limit load factors Ultimate load factor of safety = 1.5 Special ultimate S.F.s for hinges, bearings, pins, control components

Download Presentation

LSA FAA definition

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Lsa faa definition

LSA FAA definition

  • Max gross takeoff weight = 1320 lbs

  • Max stall speed = 45 knots

  • Maximum speed in level flight = 120 knots


Astm f 2245 07 guidelines

ASTM F 2245-07 guidelines

  • Limit load factors

  • Ultimate load factor of safety = 1.5

  • Special ultimate S.F.s for hinges, bearings, pins, control components

  • Flight conditions

  • Design speeds


Design speeds

Design speeds

  • 45 knots = Stall speed (LSA)

  • 99.6 knots= Minimum maneuvering Speed

  • 108 knots = Minimum cruise

  • 120 knots = Maximum cruise (LSA)

  • 160 knots = Dive speed


Flight envelope

Flight envelope

VA VC,max VD

Vs


Total loads

Total Loads

  • Level flight 1320 lbs

  • Design Limit load = 5280 lbs

  • Ultimate load = 7920 lbs (for 3 seconds)


Xflr5

XFLR5

  • Simulations

    • Various A.O.A. and Reynolds numbers

    • Wing panels

  • Data (spreadsheet)

    • Aerodynamic coefficients

    • Lift, drag, and moment forces


Xflr51

XFLR5


Xflr52

XFLR5


Xflr53

XFLR5


Distribution

Distribution


Shear and bending

Shear and bending

  • Integrate ultimate load equations

    • From 0(root) to 8ft (airfoil switch)

      • F = -5.2139x + 318.37

    • From 8ft to tip (15ft)

      • F = -3.255x2 +54.497x + 42.791


Torsion control loads

Torsion/control loads

  • 75% positive maneuvering load, plus torsion from max aileron displacement

  • Gust loads at VF with flaps extended (7.5 m/s)


Gusts

Gusts

  • Symmetric vertical gusts (up and down)

    • 15 m/s at VC

    • 7.5 m/s at VD


  • Login