Problem Spacecraft 3 getting no lift

[StevoPistolero]

I am having trouble getting any lift out of my spacecraft. I have tried cranking up all the values for the horizontal airfoil but nothing.


;

;;;**************************************************
[CONFIG]
MESHNAME="Bebop"
SIZE=142
EMPTY_MASS=1567000
CAMERA=(0,0,0)

FUEL_MASS=470133 ;;30%
MAIN_THRUST=50000000
ATTITUDE_THRUST=800000
ISP=588000
TRIM=0.05
PMI=(20,22.01,5.3)
CW_Z_POS=0.2
CW_Z_NEG=0.4
CW_X=1.0
CW_Y=2.4
CROSS_SECTION=(3000,4500,1000)
PITCH_MOMENT_SCALE=.0000001
BANK_MOMENT_SCALE=.0000001
LAUNCH_PT1=(0,-4,17)
LAUNCH_PT2=(-3.96,-5.6,-4.3)
LAUNCH_PT3=(3.96,-5.6,-4.3)
LAND_PT1=(0,-4,17)
LAND_PT2=(-3.96,-5.6,-4.3)
LAND_PT3=(3.96,-5.6,-4.3)
WING_EFFECTIVENESS=1000
ROT_DRAG=(1.43,1.43,1.43)
COG=4.57

;
;
[AERODYNAMICS]
MODEL=dglider
HAIRFOIL_ATTACK=(0,0,0)
HAIRFOIL_CHORD=5000
HAIRFOIL_AREA=110000
HAIRFOIL_ASPECT=1
HAIRFOIL_EFFICIENCY=10
VAIRFOIL_ATTACK=(0,0,-70)
VAIRFOIL_CHORD=10
VAIRFOIL_AREA=90
VAIRFOIL_ASPECT=1.1
VAIRFOIL_EFFICIENCY=1.5
AILERON_AREA=25
AILERON_LIFT=1.5
AILERON_ATTACK=(20,-5,-75)
;AILERON_RIGHT_ANIM=9
ELEVATOR_AREA=250
ELEVATOR_LIFT=1.2
ELEVATOR_ATTACK=(0,0,-73)
;ELEVATOR_ANIM=7
RUDDER_AREA=200
RUDDER_LIFT=1.5
RUDDER_ATTACK=(30,0,-70)
;RUDDER_ANIM=6
SPEEDBRAKE_DRAG=4
SPEEDBRAKE_ATTACK=(0,0,-8);



;;******ANIMATIONS*****
;;
;[ANIM_SEQ_0]
;;landing gear
;KEY=G
;DURATION=3
;REPEAT=0
;
;
;[ANIM_COMP_0]
;LEFT port GEAR DOOR
;SEQ=100
;GROUPS=0
;RANGE=(0.01,0.3)
;TYPE=ROTATE
;ROT_PNT=(-2.57,-0.25,-2.16,)
;ROT_AXIS=(0,-0.3939,0.9191)
;ANGLE=-80.
;;
;[ANIM_COMP_1]
;;right port GEAR DOOR
;SEQ=100
;GROUPS=3
;RANGE=(0.01,0.3)
;TYPE=ROTATE
;ROT_PNT=(-2.57,-0.25,-2.16,)
;ROT_AXIS=(0,-0.3939,0.9191)
;ANGLE=80.
;;

 

[liber]

I think your craft is to heavy... 1.567.000 T

 

[StevoPistolero]

Isn't the weight in kg?

 

[liber]

Isn't the weight in kg?

Yes is should be in kg,but somehow look like is in tons,I too reduce craft mass to get any lift,maybe you need to tune mass. :idk:

 

[StevoPistolero]

Yes is should be in kg,but somehow look like is in tons,I too reduce craft mass to get any lift,maybe you need to tune mass. :idk:

HAHA, THAT DID IT! I confirmed the vehicle mass using burn time calc. Of course now I have to recalibrate everything on every ship I have made, but it is performing much better. Lot better fuel efficiency too, with the engines toned down to 20% their original value. Everything is flying beautifully now. Much smoother.

Lesson learned: Spacecraft3 mass is in tons, not kgs!

Thank you so much!

 

[n122vu]

No, Spacecraft3 mass values are in kg.

From the Spacecraft manual, Page 5:

• EMPTY_MASS=104326 : the vessel empty mass (kg)
• FUEL_MASS=20000 : the vessel fuel mass (kg)

Are you sure 1.5 million kg was the weight you were shooting for? The Explorer class is 100 million kg, so not sure if that translates well as a reference, but size comparison between the Bebop and the Explorer may prove this out...

Also, just checked the ini file for the Starfury, which, although its a fighter, is maybe just a bit smaller than the Bebop. Mass in that vessel is 12,000 kg.

 

[StevoPistolero]

No, Spacecraft3 mass values are in kg.



Are you sure 1.5 million kg was the weight you were shooting for?

Well, the manual says one thing, but Burn Time Calc doesn't lie. 1.5 Million kg is the weight specified by the specs on the ship, not made by me.

 

[n122vu]

Well, the manual says one thing, but Burn Time Calc doesn't lie. 1.5 Million kg is the weight specified by the specs on the ship, not made by me.

Just verifying, Burn Time Calc listed the mass as 1567 tons, correct? If so, then the Spacecraft manual is correct. 1567000 kg = 1567 metric tons.

Just trying to clarify, because I have some ideas for a few vessels in the future and I plan to use SC3 as a sort of 'rapid prototyping' solution before coding a full .dll and I want to be aware if there are glitches.

 

[StevoPistolero]

I have 1567 listed in the config, and I get 1.56 Mg, which is 1567 kg. Spacecraft3 is correct.

---------- Post added at 08:39 PM ---------- Previous post was at 04:26 PM ----------

So...anyone know how to get more lift?