A2A/DCS TF-51D Landing Physics and Ground Handling Part 3

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BurnerTactical

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Published on September 22, 2014 7:31:02 PM ● Video Link: https://www.youtube.com/watch?v=ntjP1UJeErA

Game:

Digital Combat Simulator World (2008)

Duration: 4:07

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3

A comparison of the famous A2A and DCS P-51D Mustangs

EDIT: I went back and checked the original AAF MANUAL 51-127-5 and it does recommend FULL FLAPS on normal landings. Using full flaps helps the adverse conditions mentioned in this critique. Thanks to all who helped resolve this and hopefully we can finally put this argument to rest. Also page 131 of the DCS manual does recommend full flaps for normal landings, so obviously I need to read the manual

I am almost certain like you stated its related to the dreaded CG modifications inflicted by the aft center line tank.
I was aware of this phenomenon for the WWII era P-51, but apparently DCS is modeling this nightmare aft CG phenomenon, hopefully accurately.


FLIGHT CHARACTERISTICS (Page 101)
As new equipment was added to the aircraft over the course of its development, in particular the radio equipment and the fuselage tank installed aft of the cockpit, the center of gravity (CG) has been moved back. This has resulted in decreased back pressure required to move the control stick. Instead of a force of 6 lbs. per G of acceleration, the required force in the P-51D is only 1 ½ lbs. Additionally, the stick forces begin to reverse as acceleration exceeds 4G. Great care must be taken not to black out or over-stress the airframe in sharp pulls and turns.

Special Flight Conditions (Page 107)
Full Fuselage Tank
Special care must be taken with the control stick when the fuselage tank contains more than 25 gallons of gas. In such cases, the flying characteristics of the aircraft change considerably – increasingly so as the amount of fuel in the tank is increased. When carrying more than 40 gallons of fuel in the fuselage tank, it’s necessary to avoid any high performance maneuvers. The fuel weight shifts the CG back, making the aircraft highly unstable during maneuvering (I might add during take off and landing as well).

Also note, "are NOT permitted unless the fuselage tank contains less than 40 gallons of fuel or if external fuel tanks and/or bombs are carried. An 85 gallon fuselage fuel tank is located aft of the cockpit"


A2A P-51D Mustang
http://www.a2asimulations.com/store/index.php?main_page=product_info&cPath=9&products_id=50&zenid=7e517705b54dbbbe9153351faa0e6638

DCS P-51D Mustang
http://www.digitalcombatsimulator.com/en/series/mustang/

Remember RAPPAR - "Increase RPM And then Power,
Decrease Power And then RPM"

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