12 votes
Accepted

Could a Delta 4 Heavier be built?

Here are the projected Delta Heavy upgrades from United Launch Alliance (ULA) in different configurations. You can see that the payload value at the name of the rocket version is not the same as the ...
Mark777's user avatar
  • 2,145
9 votes

Could a Delta 4 Heavier be built?

There are a number of differences between the two systems. One of them is the cross-feed system of the Falcon Heavy. The cross-feed is only expected to be used on the Falcon Heavy with the heaviest ...
PearsonArtPhoto's user avatar
  • 121k

Only top scored, non community-wiki answers of a minimum length are eligible