The Heller Ariane 5 kit
Notes on improving the kit, and how to modify the kit to the other Ariane 5 versions.
Notes on the Heller Ariane 5
The Heller kit (nr. 60441) is for an Ariane 5G.
The kit dimensions are accurate. There are a few differences between the kit and photos I've seen of the Ariane 5. These are mostly a matter of paint colors.
- Step 1: the engine must be aluminium, Humbrol 11, including part 4.
- Step 2: part 2, 3, 4 must be aluminium, Humbrol 11.
- Step 4: the tank, part 6 must be aluminium, Humbrol 11.
- Step 5: the tank, part 7 must be aluminium, Humbrol 11, or metal foil (it's wrapped in silver insulation blanket).
- Step 6: the tank base, part 9 must be white, Humbrol 22.
- Step 13: part 22 must be natural metal (Humbrol 11), and you must install 2x part 22 on each solid booster. There are 2 locating notches on the nozzle.
- Step 9: On the EPS stage integrated in part 13, the covers on the reaction control system are incomplete: to make sure the part can be released from the mould, these covers have been cut off. The covers should be symmetrical.
The fairing in the kit seems to contain a SPELTRA. For most launches, the SYLDA was used instead. I haven't found any external differences between the two.
The Heller Ariane 5 'Mission Jules Verne'
Heller also produced the 'Mission Jules Verne' kit (52909), which contains an Ariane 5 ES ATV. This has a new (more detailed) EPS upper stage, and a payload fairing with interior detail. These parts allow you to build an Ariane with its payload on display.
Converting the Heller Ariane 5 to other versions
|G+||This version can be made with minimal changes.|
|ECA||New part: ESC-A second stage. Modifications to the first stage and boosters.|
|ECB||New part: ESC-B second stage. Modifications to the first stage and boosters.|
|GS||This version can be made with minimal changes.|
|ES ATV||You can use either kit, the Jules Verne contains an ATV. Needs modifications to the first stage and boosters.|
|ES Galileo||Modifications to the first stage and boosters.|
|ME||ESC-B second stage. Modifications to the first stage and boosters.|
Modifications for the ECA
ECA first stage: EPC H173
- The size of the stage remains the same.
- For most missions, the insulation tiles on the first stage (EPC) and second stage (ESC-A) are light blue instead of beige.
- The stage has a new engine, the Vulcain II.
The main visible difference is the turbopump exhausts (part 2 and 3): on the Vulcain 2 the exhausts are connected to a ring on the nozzle,
the exhaust is vented through the nozzle to provide film cooling of the nozzle walls.
- On the first stage engine, step 5 of the instructions indicates 2 copies of part 7+8 (high-pressure helium tanks).
This is correct for the 5G, but the ECA only has 1 tank here.
- Part 13 of the kit contains the EPC, VEB and part of the fairing. You have to remove the VEB and insert the ESC-A stage here. The image on the right shows where they are and where you have to cut these parts. You can cut on the panel lines.
- The EAP-238 and 241 boosters each consist of 7 segments. The joints (visible as thicker bands on the model) are bronze (I think this is a metal hoop around the joint). On the EAP-241A, these joints were changed: most of the booster segments are welded together in the factory, and the boosters are shipped in 3 parts, so 3 field joints remain. The welds are still visible as slightly thicker bands around the segment. They are painted white.
- The EAP-238 boosters have 2 hydraulic tanks (part 20) at the base of each booster (these provide power for the thrust vectoring system). On the EAP-241, this is replaced by a single, larger tank.
ESC-A second stage
- On the Ariane 5G, the EPS second stage is not visible on the model: it is placed inside the VEB. The ESC-A stage is much larger, and is visible between the first stage and the VEB., see above.