Its first stage is composed of three Falcon 9 nine-engine cores whose 27 Merlin engines together generate more than 5 million pounds of thrust at liftoff, equal to approximately eighteen 747 aircraft.

That also explains why the Delta IV is being retired, except for the Heavy. The Delta IV launch system is available in three configurations: the Delta IV Medium+, with two or four solid rocket motors (SRMs), and the Delta IV Heavy. The EFT-1 Delta IV Heavy posed for roll out. Each configuration is comprised of a common booster core (CBC), a cryogenic upper stage and a 5-meter-diameter payload fairing (PLF). This is the comparison of orbital launch systems page. The Falcon is literally twice as heavy.

While similar in concept to the Delta IV Heavy launcher and proposals for the Atlas V HLV and Russian Angara A5V, the Falcon Heavy was specifically … Wikipedia states that a Delta Heavy with cross-feed, extra cores, and solid rocket boosters could lift 100 tons to LEO. No, the Delta IV Heavy is assembled in ULA’s Horizontal Integration Facility and moved to the launch pad by an Elevating Platform Transporter, a multi-wheeled motorized trailer whose height can be hydraulically raised and lowered. But Atlas V and its growth versions would be better suited for BEO, although that would … It contains two lists of conventional … Only the Saturn V moon rocket, last flown in 1973, delivered more payload to orbit. $\endgroup$ – orulz Jul 12 '16 at 16:54 If you compared the weight of a fully fueled Delta IV Heavy and a fully fuelled Falcon Heavy, the latter is much more massive. The difference in specific impulse between RP-1 and hydrogen means that the payload reduction for high delta-V orbits is much smaller for the Delta-IV than it is for the Falcon Heavy. The performance numbers in this database are not accurate. The Falcon Heavy stands at 70 m (229 ft) tall and weighs 1,420,788 kg (3,125,735 lbs). The Falcon Heavy stands 230 ft (70 m) tall, its core has a diameter of 12 ft (3.66 m), and when fully assembled with its side boosters is 40 ft (12.2 … There is also a paper about a number of proposed Delta IV Heavy configurations, from which the following comes: Wikipedia says 733,000 kg (Delta) versus 1,462,836 kg (FH). 13 This new Falcon may or may not be operational in 2021, but it is fair to say that it is not appropriate to compare the Falcon Heavy of 2015 to the SLS Block IB/Block IIB of 2021 to 2030. This comes after the December 2 … The Falcon Heavy boasts that it can carry an astounding 63,800k g (140,660 lbs) to LEO. SpaceX Falcon Heavy vs. Delta IV Heavy: Reusability. Because it has so much more propellant mass, the Falcon Heavy can lift a greater payload into low Earth orbit. NASA LIVE: United Launch Alliance to Launch Delta IV Heavy Rocket #ParkerSolarProbe @2:31am EST [ link to (secure) ] I realize the first video is a Falcon 9. A 3x launch mission with 1x Atlas V-552, 1x uprated Delta IV-H (as above) - these have the spacecraft - and 1x Falcon Heavy with the Earth Departure Stage would give a lot of mission capability for a fraction of the cost of developing a 'Super Heavy Lift' launcher. In a tweet, Elon Musk indicated that a fully expendable Falcon Heavy, which far exceeds the performance of a Delta IV Heavy, costs $150 million, compared to over $400M for Delta IV Heavy. The Falcon Heavy is using an RP-1 upper stage, whereas the Delta-IV uses hydrogen for all stages. So, beyond the Delta IV Heavy, there are essentially no technical advantages. Falcon Heavy's max capacity is 54 tons.

SpaceX's Falcon Heavy will be one of the first of a new generation of powerful rockets designed to bring payloads deep into space. But relying exclusively on "small" rockets like the Delta IV and Atlas V and Falcon 9 Heavy and doing a LOT of on-orbit assembly is another controversial point.