Vessel Chang'e 4 Lander, Rover, Queqiao and Longjiang 1 and 2 Lunar probes

I made no major changes, the Chinese Program is already Multistage based.
So just use this:
China's Manned Space Program v1.5

You may be able to derive some orbital information from here:
https://skyriddles.wordpress.com/2018/12/11/a-trip-to-the-dark-side-of-the-moon/#more-339

And from https://forum.nasaspaceflight.com/index.php?topic=30377.msg1886203#msg1886203 :
Chang'e-4, 2018-103A/43845 in 263 x 277 km x 28.88°Epoch: December 7, 18:23 UTC
Thats the one i used. But didn't do right in 2016

---------- Post added 12-22-18 at 07:16 AM ---------- Previous post was 12-21-18 at 08:46 PM ----------

So this is what I get:
2cUqqgE.jpg

you see the pad is in the ground

This is what I have:
https://drive.google.com/open?id=1XMu4vAtANxAPmLUQvZ6IJZECvPxR7ieg

Got to have the Manned Chinese Program
[ame="https://www.orbithangar.com/searchid.php?ID=3179"]China's Manned Space Program v1.5[/ame]

here is the log:
000000.000: Finished initialising world
000000.000: Module JSLC_pad.dll .......... [Build ******, API 060425]
000000.000: Module Multistage2015.dll .... [Build 170626, API 160828]
000000.000: Multistage Version: 170506
000000.000: Load State Started
000000.000: LM3B: Guidance File present: Config\Multistage2015\Guidance\SATURN5_GNC.txt
000000.000: LM3B: Orbit Call Found! Targets: Apogee:185000.0 Perigee:185000.0 Inclination:0.0 Mode:1.0 GT initial Pitch: 0.0 Abside:185000.0
000000.000: LM3B: Config File: C:\Orbiter2016\Config\Multistage2015\LongMarch3b.ini
000000.000: LM3B: Number of stages in the ini file: 3
000000.000: LM3B: Number of boosters group in the ini file: 1
000000.000: LM3B: Number of Payloads in the ini file: 0
000000.000: LM3B: This Rocket Has Fairing
000000.000: LM3B: Texture n.1 Loaded Exhaust_atsme
000000.000: LM3B: booster n. 1 Tank Added: 150984.000 kg
000000.000: LM3B: Stage n. 3 Tank Added: 18193.000 kg
000000.000: LM3B: Stage n. 2 Tank Added: 49400.000 kg
000000.000: LM3B: Stage n. 1 Tank Added: 37746.000 kg
000000.000: LM3B: Stage n.1 Engine Exhaust Stream Added: to engine n.1
000000.000: LM3B: Stage n.1 Engine Exhaust Stream Added: to engine n.1
000000.000: LM3B: Stage n. 1 Engines Exhaust Added--> number of engines: 4 , diameter: 0.700, position x: 0.000 y: 0.957 z: -24.000
000000.000: LM3B: Stage n.1 Engine Exhaust Stream Added: to engine n.2
000000.000: LM3B: Stage n.1 Engine Exhaust Stream Added: to engine n.2
000000.000: LM3B: Stage n. 1 Engines Exhaust Added--> number of engines: 4 , diameter: 0.700, position x: 0.000 y: -0.957 z: -24.000
000000.000: LM3B: Stage n.1 Engine Exhaust Stream Added: to engine n.3
000000.000: LM3B: Stage n.1 Engine Exhaust Stream Added: to engine n.3
000000.000: LM3B: Stage n. 1 Engines Exhaust Added--> number of engines: 4 , diameter: 0.700, position x: 0.957 y: 0.000 z: -24.000
000000.000: LM3B: Stage n.1 Engine Exhaust Stream Added: to engine n.4
000000.000: LM3B: Stage n.1 Engine Exhaust Stream Added: to engine n.4
000000.000: LM3B: Stage n. 1 Engines Exhaust Added--> number of engines: 4 , diameter: 0.700, position x: -0.957 y: 0.000 z: -24.000
000000.000: LM3B: Booster Group n.1 Engine Exhaust Stream Added: to engine n.1
000000.000: LM3B: Booster Group n.1 Engine Exhaust Stream Added: to engine n.1
000000.000: LM3B: Booster Engines Exhaust Added--> Booster Group: 1 number of engines: 0 , diameter: 0.700, position x: 0.000 y: 0.000 z: -7.650
000000.000: LM3B: Booster Group n.1 Engine Exhaust Stream Added: to engine n.2
000000.000: LM3B: Booster Group n.1 Engine Exhaust Stream Added: to engine n.2
000000.000: LM3B: Booster Engines Exhaust Added--> Booster Group: 1 number of engines: 0 , diameter: 0.700, position x: 0.000 y: 0.000 z: -7.650
000000.000: LM3B: Booster Group n.1 Engine Exhaust Stream Added: to engine n.3
000000.000: LM3B: Booster Group n.1 Engine Exhaust Stream Added: to engine n.3
000000.000: LM3B: Booster Engines Exhaust Added--> Booster Group: 1 number of engines: 0 , diameter: 0.700, position x: 0.000 y: 0.000 z: -7.650
000000.000: LM3B: Booster Group n.1 Engine Exhaust Stream Added: to engine n.4
000000.000: LM3B: Booster Group n.1 Engine Exhaust Stream Added: to engine n.4
000000.000: LM3B: Booster Engines Exhaust Added--> Booster Group: 1 number of engines: 0 , diameter: 0.700, position x: 0.000 y: 0.000 z: -7.650
000000.000: LM3B: Stage n.1 Mesh Preloaded: LongMarch3b\LM3B1stage
000000.000: LM3B: Stage n.1 Mesh Added Mesh: LongMarch3b\LM3B1stage @ x:0.000 y:0.000 z:0.000
000000.000: LM3B: Stage n.2 Mesh Preloaded: LongMarch3b\LM3B2stage
000000.000: LM3B: Stage n.2 Mesh Added Mesh: LongMarch3b\LM3B2stage @ x:0.000 y:0.000 z:0.000
000000.000: LM3B: Stage n.3 Mesh Preloaded: LongMarch3b\LM3B3stage
000000.000: LM3B: Stage n.3 Mesh Added Mesh: LongMarch3b\LM3B3stage @ x:0.000 y:0.000 z:0.000
000000.000: LM3B: Booster Mesh Preloaded: LongMarch3b\LM3BBooster1_1
000000.000: LM3B: Booster Mesh Added Mesh: LongMarch3b\LM3BBooster1_1 @ x:0.000 y:0.000 z:0.000
000000.000: LM3B: Booster Mesh Preloaded: LongMarch3b\LM3BBooster1_2
000000.000: LM3B: Booster Mesh Added Mesh: LongMarch3b\LM3BBooster1_2 @ x:0.000 y:0.000 z:0.000
000000.000: LM3B: Booster Mesh Preloaded: LongMarch3b\LM3BBooster1_3
000000.000: LM3B: Booster Mesh Added Mesh: LongMarch3b\LM3BBooster1_3 @ x:-0.000 y:0.000 z:0.000
000000.000: LM3B: Booster Mesh Preloaded: LongMarch3b\LM3BBooster1_4
000000.000: LM3B: Booster Mesh Added Mesh: LongMarch3b\LM3BBooster1_4 @ x:0.000 y:-0.000 z:0.000
000000.000: LM3B: Fairing Mesh Preloaded: LongMarch3b\LLM3Bfairing2_1
000000.000: LM3B: Fairing Mesh Added Mesh: LongMarch3b\LLM3Bfairing2_1 @ x:0.000 y:0.000 z:0.000
000000.000: LM3B: Fairing Mesh Preloaded: LongMarch3b\LLM3Bfairing2_2
000000.000: LM3B: Fairing Mesh Added Mesh: LongMarch3b\LLM3Bfairing2_2 @ x:-0.000 y:0.000 z:0.000
000000.000: Load State Terminated
000000.000: Module EmptyModule.dll ....... [Build 170626, API 160828]
000000.000: Finished initialising status
000000.000: Finished initialising camera
000000.000: Finished setting up render state
000000.000: Post Creation Started
000000.000: LM3B: Gravity Turn Initial Pitch by user: 0.000 Calculated:89.000
000000.000: RESET PEG
000000.000: LM3B: Planet Reference Pressure = 101325.0 Pa Atmosphere Altitude Limit:2500.0 km
000000.000: Post Creation Terminated
000000.000: Finished initialising panels
 
So try this:
https://drive.google.com/open?id=1hCMEsxzP7z_LpMoGHzctzaQ2Z6LCXbV1

Not sure if I got the values correct. ONe launch fast and another just set on the pad firing
5HKFJ6h.jpg


---------- Post added 12-23-18 at 07:20 AM ---------- Previous post was 12-22-18 at 04:56 PM ----------

So basing the values off this:
http://www.spaceflight101.net/long-march-3b.html

This is what I have for the INI. The thrust is in N so I think I have the correct amount. Not sure if on the booster it needed to be 4x?
Code:
GNC_Debug=0
Telemetry=0
Focus=0
Thrust_real_pos=0
Vertical_Angle=0.000

[TEXTURE_LIST]
TEX_1=Exhaust_atsme


[BOOSTER_1]
N=4
MeshName=LongMarch3b\LM3BBooster1
Height=15.330
Diameter=2.250
EmptyMass=3000.000
FuelMass=37746.000
Thrust=2961600
angle=0.000
off=(0.000,0.000,0.000)
BurnTime=125.000
eng_1=(0.000,2.946,-23.7)
eng_diameter=0.700
ENG_PSTREAM1=exhaust
Speed=(15.000,0.000,0.000)
Rot_speed=(0.000,-0.400,0.000)
BurnDelay=0.000
Eng_tex=
Eng_pstream2=


[STAGE_1]
Height=23.270
Diameter=3.350
EmptyMass=12125.000 
FuelMass=171775.000 
Thrust=2961600.000
BurnTime=146.000
off=(0.000,0.000,0.000)
MeshName=LongMarch3b\LM3B1stage
eng_1=(0,-.9,-24)
eng_2=(-.9,0,-24)
eng_3=(0,.9,-24)
eng_4=(-.9,0,-248)
eng_diameter=0.700
PITCHTHRUST=56774532.400 
YAWTHRUST=56774532.400 
speed=(0.000,0.000,-10.000)
ENG_PSTREAM1=contrail
battery=1.500
Ignite_delay=0.010
Reignitable=1
Eng_tex=
Eng_pstream2=
Eng_dir=(0.000,0.000,1.000)
Module=Stage
Rot_speed=(0.000,0.000,0.000)

[STAGE_2]
MeshName=LongMarch3b\LM3B2stage
Diameter=3.350
Height=12.920
EmptyMass=3848.000
FuelMass=49400.000
Thrust=742000
BurnTime=178.000
ignite_delay=10.000
off=(0.000,0.000,0.000)
eng_1=(0.000,0,-.915)
eng_diameter=0.700
PITCHTHRUST=4663990.000
YAWTHRUST=4663990.000
battery=5.000
ullage_thrust=100000.000
ullage_N=4
ullage_angle=-22.500
ullage_pos=(4.200,0.000,-10.700)
ullage_dir=(0.200,0.000,-1.000)
ullage_tex=Exhaust_atsme
ullage_length=5.000
ullage_diameter=1.000
ullage_anticipation=3.000
ullage_overlap=1.000
ullage_rectfactor=3.000
reignitable=1
Eng_tex=
Eng_pstream1=
Eng_pstream2=
Eng_dir=(0.000,0.000,1.000)
Module=Stage
Speed=(0.000,0.000,0.000)
Rot_speed=(0.000,0.000,0.000)

[FAIRING]
N=2
MeshName=LongMarch3b\LLM3Bfairing2
Diameter=10.000
Height=31.350
angle=0.000
off=(0.000,0.000,0.000)
EMPTYMASS=10683.000
speed=(25.000,0.000,0.000)
Module=Stage
Rot_Speed=(0.000,0.000,0.000)
Rot_speed(0,0.3,0)

[STAGE_3]
Meshname=LongMarch3b\LM3B3stage
Off=(0.000,0.000,0.000)
Height=12.380
Diameter=3.000
Thrust=156900.000
EmptyMass=2740.000
FuelMass=18193.000
Burntime=0.000
Eng_1=(0.75,0.000,8.700)
Eng_2=(-.75,0.000,8.700)
Reignitable=1
Eng_diameter=.700
Eng_tex=
Eng_pstream1=
Eng_pstream2=
Eng_dir=(0.000,0.000,0.000)
Module=
Speed=(0.000,0.000,0.000)
Rot_speed=(0.000,0.000,0.000)
Ignite_delay=0.010

bnNj348.jpg

you can see the pad and lights at wrong

GsYO2RP.jpg
 
Last edited:
No, the .ini values are wrong. You need to add some cargo for the guidance to work and a 10ton fairing seems a bit too much....


Your reference seems good, I think you can try with those values.
 
So I corrected the mass on the fairing.
Code:
[MISC]
cog=15.000
GNC_Debug=0
Telemetry=0
Focus=0
Thrust_real_pos=0
Vertical_Angle=0.000

[TEXTURE_LIST]
TEX_1=Exhaust_atsme


[BOOSTER_1]
N=4
MeshName=LongMarch3b\LM3BBooster1
Height=15.330
Diameter=2.250
EmptyMass=3000.000
FuelMass=37746.000
Thrust=2961600
angle=0.000
off=(0.000,0.000,0.000)
BurnTime=125.000
eng_1=(0.000,2.946,-23.7)
eng_diameter=0.700
ENG_PSTREAM1=exhaust
Speed=(15.000,0.000,0.000)
Rot_speed=(0.000,-0.400,0.000)
BurnDelay=0.000
Eng_tex=
Eng_pstream2=


[STAGE_1]
Height=23.270
Diameter=3.350
EmptyMass=12125.000 
FuelMass=171775.000 
Thrust=2961600.000
BurnTime=146.000
off=(0.000,0.000,0.000)
MeshName=LongMarch3b\LM3B1stage
eng_1=(0,-.9,-24)
eng_2=(-.9,0,-24)
eng_3=(0,.9,-24)
eng_4=(-.9,0,-248)
eng_diameter=0.700
PITCHTHRUST=56774532.400 
YAWTHRUST=56774532.400 
speed=(0.000,0.000,-10.000)
ENG_PSTREAM1=contrail
battery=1.500
Ignite_delay=0.010
Reignitable=1
Eng_tex=
Eng_pstream2=
Eng_dir=(0.000,0.000,1.000)
Module=Stage
Rot_speed=(0.000,0.000,0.000)

[STAGE_2]
MeshName=LongMarch3b\LM3B2stage
Diameter=3.350
Height=12.920
EmptyMass=3848.000
FuelMass=49400.000
Thrust=742000
BurnTime=178.000
ignite_delay=10.000
off=(0.000,0.000,0.000)
eng_1=(0.000,0,-.915)
eng_diameter=0.700
PITCHTHRUST=4663990.000
YAWTHRUST=4663990.000
battery=5.000
ullage_thrust=100000.000
ullage_N=4
ullage_angle=-22.500
ullage_pos=(4.200,0.000,-10.700)
ullage_dir=(0.200,0.000,-1.000)
ullage_tex=Exhaust_atsme
ullage_length=5.000
ullage_diameter=1.000
ullage_anticipation=3.000
ullage_overlap=1.000
ullage_rectfactor=3.000
reignitable=1
Eng_tex=
Eng_pstream1=
Eng_pstream2=
Eng_dir=(0.000,0.000,1.000)
Module=Stage
Speed=(0.000,0.000,0.000)
Rot_speed=(0.000,0.000,0.000)

[FAIRING]
N=2
MeshName=LongMarch3b\LLM3Bfairing2
Diameter=10.000
Height=31.350
angle=0.000
off=(0.000,0.000,0.000)
EMPTYMASS=1500
speed=(25.000,0.000,0.000)
Module=Stage
Rot_Speed=(0.000,0.000,0.000)
Rot_speed(0,0.3,0)

[STAGE_3]
Meshname=LongMarch3b\LM3B3stage
Off=(0.000,0.000,0.000)
Height=12.380
Diameter=3.000
Thrust=156900.000
EmptyMass=2740.000
FuelMass=18193.000
Burntime=0.000
Eng_1=(0.75,0.000,8.700)
Eng_2=(-.75,0.000,8.700)
Reignitable=1
Eng_diameter=.700
Eng_tex=
Eng_pstream1=
Eng_pstream2=
Eng_dir=(0.000,0.000,0.000)
Module=
Speed=(0.000,0.000,0.000)
Rot_speed=(0.000,0.000,0.000)
Ignite_delay=0.010
But it just sits on the pad the engine fires but doesn't lift off.

Not sure about the cargo though.

---------- Post added at 02:41 PM ---------- Previous post was at 02:32 PM ----------

I also adjusted the thrust of the boosters as it is multiplied by the number:
Code:
[BOOSTER_1]
N=4
MeshName=LongMarch3b\LM3BBooster1
Height=15.330
Diameter=2.250
EmptyMass=3000.000
FuelMass=37746.000
Thrust=740400
angle=0.000
off=(0.000,0.000,0.000)
BurnTime=125.000
eng_1=(0.000,2.946,-23.7)
eng_diameter=0.700
ENG_PSTREAM1=exhaust
Speed=(15.000,0.000,0.000)
Rot_speed=(0.000,-0.400,0.000)
BurnDelay=0.000
Eng_tex=
Eng_pstream2=
 
Try this, it works by the numbers:


LM3B.INI

Code:
[MISC]
cog=20.000
GNC_Debug=0
Telemetry=0
Focus=1
Thrust_real_pos=1
Vertical_Angle=0.000

[TEXTURE_LIST]
TEX_1=Exhaust_atsme

[PARTICLESTREAM_1]
Name=vent
amin = 1e-006
amax = 0.1
atmslowdown = 3
growthrate = 1.2
lifetime = 4.5
lmax = 0.5
lmin = 0
srcrate = 15
srcsize = 0.4
v0 = 1
ltype = EMISSIVE
atmsmap = ATM_PLOG
levelmap = LVL_PSQRT
tex = contrail

[PARTICLESTREAM_2]
NAME=mach
SRCSIZE=7
SRCRATE=120
V0=12
SRCSPREAD=0
LIFETIME=0.25
GROWTHRATE=6
ATMSLOWDOWN=0
LTYPE=EMISSIVE
LEVELMAP=LVL_PSQRT
LMIN=0
LMAX=4
ATMSMAP=ATM_PLOG
AMIN=0.7e-7
AMAX=1
TEX= contrail

[FX_VENT]
pstream=vent
off_1=(4.2,0,35)
dir_1=(1,0,0)
time_fin_1=-15
off_2=(0,4.2,15)
dir_2=(0,1,0)
time_fin_2=-25

[FX_MACH]
pstream=mach
mach_min=0.9
mach_max=1.1
off_1=(0,0,70)
off_2=(6.7775,0,20)
off_3=(-6.7775,0,20)
dir=(0,0,-1)


[BOOSTER_1]
N=4
MeshName=LongMarch3b\LM3BBooster1
Height=15.330
Diameter=2.250
THRUST=813000
EMPTYMASS=3000
FUELMASS=37750
BURNTIME=125
angle=0.000
off=(0.000,0.000,0.000)
eng_1=(0.000,0.000,0.000)
eng_diameter=0.700
ENG_PSTREAM1=exhaust
Speed=(15.000,0.000,0.000)
Rot_speed=(0.000,-0.400,0.000)
BurnDelay=0.000
Eng_tex=
Eng_pstream2=


[STAGE_1]
Height=23.270
Diameter=3.350
THRUST=2961600
EMPTYMASS=12125
FUELMASS=171775
BURNTIME=146
off=(0.000,0.000,0.000)
MeshName=LongMarch3b\LM3B1stage
eng_1=(-1.835,3.313,-32.408)
eng_2=(-1.835,-3.313,-32.408)
eng_3=(1.835,-3.313,-32.408)
eng_4=(1.835,3.313,-32.408)
eng_diameter=0.700
speed=(0.000,0.000,-10.000)
ENG_PSTREAM1=contrail
Reignitable=0
Eng_tex=
Eng_pstream2=
Eng_dir=(0.000,0.000,1.000)
Module=Stage
Rot_speed=(0.000,0.000,0.000)

[STAGE_2]
MeshName=LongMarch3b\LM3B2stage
Diameter=3.350
Height=12.920
THRUST=742000.000
EMPTYMASS=3848.000
FUELMASS=49608.000
BURNTIME=178.000 
off=(0.000,0.000,0.000)
eng_1=(0.000,-1.350,-12.500)
eng_diameter=2.700
reignitable=0
Eng_tex=
Eng_pstream1=
Eng_pstream2=
Eng_dir=(0.000,0.000,1.000)
Module=Stage
Rot_speed=(0.000,0.000,0.000)
speed=(0.000,0.000,-10.000)

[FAIRING]
N=2
MeshName=LongMarch3b\LLM3Bfairing2
Diameter=4.000
Height=9.560
angle=0.000
off=(0.000,0.000,0.000)
EMPTYMASS=1500.000
speed=(25.000,0.000,0.000)
Module=Stage
Rot_Speed=(0.000,0.000,0.000)

[STAGE_3]
Meshname=LongMarch3b\LM3B3stage
Off=(0.000,0.000,0.000)
Height=12.380
Diameter=3.000
Thrust=156900.000
EmptyMass=2740.000
FuelMass=18193.000
Burntime=469.000
Eng_1=(0.000,0.000,0.000)
Eng_2=(0.000,0.000,0.000)
Reignitable=1
eng_diameter=2.700
Eng_tex=
Eng_pstream1=
Eng_pstream2=
Eng_dir=(0.000,0.000,1.000)
Module=Stage
speed=(0.000,0.000,-10.000)
Rot_speed=(0.000,0.000,0.000)

[PAYLOAD_1]
MESHNAME=shenzhou\shenzhou1
OFF=(0.000,0.000,21.690) 
HEIGHT=9.250
DIAMETER=2.800
MASS=1500.000
MODULE=spacecraft\spacecraft4
NAME=Shenzhou1
SPEED=(0.000,0.000,0.500)
RENDER=1
Rotation=(0.000,0.000,0.000)
Rot_speed=(0.000,0.000,0.000)
Live=0


For scenario:
Code:
BEGIN_DESC

END_DESC

BEGIN_ENVIRONMENT
  System Sol
  Date MJD 58475.1448205196
  Help CurrentState_img
END_ENVIRONMENT

BEGIN_FOCUS
  Ship LM3B
END_FOCUS

BEGIN_CAMERA
  TARGET LM3B
  MODE Extern
  POS 20.376873 -8.007067 -118.215120
  TRACKMODE AbsoluteDirection
  FOV 60.00
END_CAMERA

BEGIN_SHIPS
LM3B:Multistage2015
  STATUS Landed Earth
  POS 100.2914100 40.9578800
  HEADING 47.37
  ALT -0.046
  AROT 41.418 7.754 139.418
  ATTACHED 0:0,MS_LaunchPad_LM3B
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000 2:1.000000 3:1.000000
  NAVFREQ 0 0 0 0
  XPDR 0
  CONFIG_FILE Config\Multistage2015\LM3B.ini
  GUIDANCE_FILE Config\Multistage2015\LM3B_guidance.txt
  CONFIGURATION 0
  CURRENT_BOOSTER 1
  CURRENT_STAGE 1
  CURRENT_INTERSTAGE 1
  CURRENT_PAYLOAD 1
  FAIRING 1
  MET -3.400
  STAGE_IGNITION_TIME 0.000000
  STAGE_STATE 2
  ALT_STEPS 100.0,350.0,1400.0,35000.0
  PEG_PITCH_LIMIT 35.000
  PEG_MC_INTERVAL 0.100
  RAMP 
END
JSLC_pad:JSLC_pad
  STATUS Landed Earth
  POS 100.2914100 40.9578800
  HEADING 47.37
  ALT 2.000
  AROT 138.011 40.135 -169.836
  AFCMODE 7
  NAVFREQ 0 0
END
MS_LaunchPad_LM3B:EmptyModule
  STATUS Landed Earth
  POS 100.2914100 40.9578800
  HEADING 47.37
  ALT -0.021
  AROT 41.418 7.754 139.418
  AFCMODE 7
  NAVFREQ 0 0
END
END_SHIPS




LM3B_guidance.txt

Code:
-4=engine(0,100,4)
0=engine(100,100,0.1)
20=Orbit(195,315)
100=Les()
101=fairing()




The payload is just for show, using the shenzhou mesh with 1500kg.
And I didn't fix the exausts and other effects :)

You will need a good guidance, but the default autopilot will get you into orbit with fuel to spare.
The scenario needs altitude adjustment, but it's a start.

Hope it helps!
I do like this rocket, great job so far!
 
After testing out the Long March 3B, We get to work on Queqiao and the two Longjiangs before Chang'e 4 could be done as an addon
 
Make sure, you don't have Attachment Manager running, or you won't take off.
 
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