Aero Question for Cessna Caravan CE208 Pilots
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Aero Question for Cessna Caravan CE208 Pilots
Hello,
I have three aero questions about the Cessna Caravan:
1. Does anyone have the Cessna Customer Service Contact Info.?
2. On the caravan flaps at the end of the flap (traveling inboard to outboard), on the leading edge of the flap, approx. last foot, there appears to be a rubber vortex generator. Is that rubber vortex generator for low speed or high speed and what is it's specific func.? My guess is the vortex generator is for low speeds at slow flight, near stalls. My guess is that stalls on straight wings travel inboard to outboard and that the vortex generator enhances turbulent flow to get that section more turbulent first, which would help with roll stability.
3. Also, on that same flap section, at the trailing edge, there appears to be a small fence. Why is that located at that particular point and why is the fence there. I know fences are used to direct airflow.
Thank you.
I have three aero questions about the Cessna Caravan:
1. Does anyone have the Cessna Customer Service Contact Info.?
2. On the caravan flaps at the end of the flap (traveling inboard to outboard), on the leading edge of the flap, approx. last foot, there appears to be a rubber vortex generator. Is that rubber vortex generator for low speed or high speed and what is it's specific func.? My guess is the vortex generator is for low speeds at slow flight, near stalls. My guess is that stalls on straight wings travel inboard to outboard and that the vortex generator enhances turbulent flow to get that section more turbulent first, which would help with roll stability.
3. Also, on that same flap section, at the trailing edge, there appears to be a small fence. Why is that located at that particular point and why is the fence there. I know fences are used to direct airflow.
Thank you.
208
1/Cessna has an excellent support web site and registration is free. Gives access to all SB's & SL's as well as a whole lot more.
https://support.cessna.com/custsupt/...t/newlogin.jsp
2/ The 208B has some vortex generators on the flap leading edge and flap trailing edge angle that combine to keep the airflow attached to the upper flap surface in the area behind the slot-lip spoilers (these changes were Incorporated to reduce the flaps-down stall speed and improve flaps-down lateral stability) Source ......... William D Thompson's excellent book "Cessna Wings for the World". (P149-150)
3/ Fences are on the upper inboard end of each aileron in an attempt to obtain some proverse aileron effects in the side-slip condition. (P143)
Bill was at Cessna for 28 years and held the position of Engineering Test Pilot and later the Manager of Flight Test and Aerodynamics, he published Cessna Wings for the World in 1991 and Cessna Wings for the World II in 1995. Both are an excellent read for any Cessna pilot or engineer.
Sadly Bill passed away in 2001 but I believe the books are both still available.
https://support.cessna.com/custsupt/...t/newlogin.jsp
2/ The 208B has some vortex generators on the flap leading edge and flap trailing edge angle that combine to keep the airflow attached to the upper flap surface in the area behind the slot-lip spoilers (these changes were Incorporated to reduce the flaps-down stall speed and improve flaps-down lateral stability) Source ......... William D Thompson's excellent book "Cessna Wings for the World". (P149-150)
3/ Fences are on the upper inboard end of each aileron in an attempt to obtain some proverse aileron effects in the side-slip condition. (P143)
Bill was at Cessna for 28 years and held the position of Engineering Test Pilot and later the Manager of Flight Test and Aerodynamics, he published Cessna Wings for the World in 1991 and Cessna Wings for the World II in 1995. Both are an excellent read for any Cessna pilot or engineer.
Sadly Bill passed away in 2001 but I believe the books are both still available.
