What was the Ares IV project?

Ares IV was a proposed NASA rocket under the Constellation program, designed as a heavy-lift expendable launch vehicle for crewed missions to the Moon and Mars. It was cancelled before entering production or launch phases.

How did Ares IV differ from other Ares rockets?

Ares IV was distinct from **Ares I** (a smaller, crew-focused rocket) and **Ares V** (a larger cargo-focused heavy-lift vehicle). Ares IV was intended to bridge the gap between these two designs, potentially serving as a versatile option for both crew and cargo missions.

Why was Ares IV cancelled?

The Constellation program, including Ares IV, was cancelled in 2010 due to budget constraints, shifting political priorities, and concerns over the program’s feasibility. NASA subsequently pivoted to the **Space Launch System (SLS)** as its next-generation heavy-lift rocket.

What was the Constellation program?

The Constellation program was a NASA initiative launched in 2005 to develop new spacecraft and launch vehicles for human exploration beyond low Earth orbit. It included the **Orion crew vehicle**, **Ares I**, **Ares V**, and Ares IV, but was largely abandoned in favor of the SLS and commercial crew programs.

Was Ares IV ever built or tested?

No. Ares IV remained in the conceptual and early design phase and was never constructed, tested, or launched. Its development was halted alongside the rest of the Constellation program.

How does Ares IV compare to the Saturn V?

Ares IV was conceptually compared to the **Saturn V**, NASA’s historic heavy-lift rocket used during the Apollo program. While exact specifications were never finalized, Ares IV was intended to provide similar lift capacity for crewed deep-space missions.

What other rockets are classified as expendable launch vehicles?

Expendable launch vehicles (ELVs) include a wide range of rockets from multiple nations, such as: - **United States**: Atlas, Thor, Falcon 1 (predecessor to Falcon 9), Antares. - **Russia/Soviet Union**: Proton, R-7, Angara, Rokot. - **European Union**: Ariane family (Ariane 1–4). - **Japan**: H-II, Mu series. - **India**: GSLV. - **Israel**: Shavit-2. - **Brazil**: VLS-1. - **North Korea**: Unha. Ares IV would have joined this category if completed.

Ares IV

cancelled NASA rocket project

class rocket_model Q1189387

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Ares IV

Summary

Ares IV is a rocket model^[1]. It has Wikipedia articles in 10 language editions, a strong signal of global cultural recognition.^[2]

Key Facts

Ares IV's image is recorded as Saturn V-Shuttle-Ares IV comparison.jpg^[3].
Ares IV's instance of is recorded as rocket model^[4].
Ares IV's instance of is recorded as abandoned project^[5].
Ares IV's operator is recorded as National Aeronautics and Space Administration^[6].
Ares IV's subclass of is recorded as expendable launch vehicle^[7].
Ares IV's part of is recorded as Constellation program^[8].
Ares IV's country of origin is recorded as United States^[9].
Ares IV's Freebase ID is recorded as /m/027gv40^[10].

Why It Matters

Ares IV has Wikipedia articles in 10 language editions, a strong signal of global cultural recognition.^[2] It is known by 4 alternative names across languages and contexts.^[11]

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Quick Facts

Instance of rocket model, abandoned project

Subclass of expendable launch vehicle

Country of origin United States

Subclass of expendable launch vehicle

Part of Constellation program

Properties

Country of origin United States

Freebase id /m/027gv40

Operator National Aeronautics and Space Administration

Part of Constellation program

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External References (1)

Freebase id /m/027gv40

🌐 Available in 10 languages

esAres IV frAres IV huAres IV itAres IV jaアレスIV noAres IV plAres IV ptAres IV svAres IV zh戰神四號運載火箭

🏷️ Also known as

fr Ares 4 ja アレス4 zh 战神4号运载火箭 zh 戰神四號

🔗 Connections

Country of origin 1

United States

Operator 1

National Aeronautics and Space Administration

Part of 1

Constellation program

Subclass of 1

expendable launch vehicle

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

Class ancestry

[1] ↑ Ares IV is an instance of rocket model (Q110055303) [P31, primary]. Wikidata. wikidata.org.

Aggregate / graph-position facts

[2] ↑ Ares IV has Wikipedia articles in 10 language editions, a strong signal of global cultural recognition.. Wikidata sitelinks. wikidata.org.
[11] ↑ Ares IV is known by 4 alternative names across languages and contexts.. Wikidata aliases. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). Ares IV. Retrieved March 20, 2026, from https://4ort.xyz/entity/ares-iv

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BibTeX

@misc{4ortxyz_ares-iv_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Ares IV}}, year = {2026}, url = {https://4ort.xyz/entity/ares-iv}, note = {Accessed: 2026-03-20}}

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Ares IV

Ares IV

Summary

Key Facts

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Direct Wikidata claims

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