# Hypersonic Missiles (DD-059)

> The Congressional Research Service defines hypersonic weapons as maneuvering weapons that fly at Mach 5 or faster, roughly a mile per second. They come in two types: glide vehicles boosted by a rocket, and cruise missiles powered by air-breathing scramjets. Ballistic missile warheads also exceed Mach 5. What sets hypersonic weapons apart is maneuvering and a lower, flatter flight path, which ground radars may not detect until late. CBO concluded they probably wouldn't be more survivable than ballistic missiles with maneuverable warheads unless those faced highly effective long-range defenses. Heat is the main engineering challenge: GAO says surfaces can exceed 2,000 °F, and CBO cites sustained temperatures as high as 3,000 °F. Russia reportedly fielded its first hypersonic weapons in December 2019, and China likely by 2020. The DOD's FY2026 request for hypersonic weapons was $3.9 billion, down from $6.9 billion in FY2025.

- Department: Military (also Tech)
- First published: 2025-06-22
- Last updated: 2025-06-22
- Permalink: https://detailenjoyer.com/case/hypersonic-missiles/
- Author: Marcus Easterling (DetailEnjoyer), The Detail Department

## On the timeline

- **December 2019**: Russia reportedly fields its first hypersonic weapons
- **2020**: China likely fields hypersonic weapons

Full timeline: https://detailenjoyer.com/timeline/?case=hypersonic-missiles

## Quick facts

- **DD-059-F01**: Ballistic missile warheads also exceed Mach 5. A hypersonic glide vehicle's distinction is that it can maneuver. _(Write-up · Exhibit B (Speed isn't the difference))_
- **DD-059-F02**: Hypersonic missiles can face sustained temperatures as high as 3,000 °F, according to the Congressional Budget Office. _(Write-up · Exhibit E (Heat))_

## Write-up

Mach 5 isn't the new part. Maneuvering is. Ballistic missiles fly that fast too; hypersonic weapons can change course.

1. **Two kinds**: Hypersonic weapons fly at Mach 5 or faster. Boost-glide weapons release a maneuverable glide vehicle from a rocket booster, and hypersonic cruise missiles use air-breathing scramjet engines.
2. **Speed isn't the difference**: Missiles with ballistic warheads also reach Mach 5, about a mile per second. The key difference is that a glide vehicle can maneuver and change course after release, often on a flatter, lower path.
3. **Detection**: Because of line-of-sight limits, most ground-based radars can't see a hypersonic weapon until late in its flight, leaving little time to launch interceptors.
4. **Survivability debate**: CBO concluded that hypersonic missiles probably wouldn't be more survivable than ballistic missiles with maneuverable warheads, unless the ballistic missiles faced highly effective long-range defenses. CRS notes that critics say the weapons lack defined mission requirements.
5. **Heat**: GAO says the exterior can exceed 2,000 °F. CBO cites sustained temperatures as high as 3,000 °F, which require extensive flight testing.
6. **Who has them**: Russia reportedly fielded its first hypersonic weapons in December 2019, and China likely did as early as 2020. The U.S. Defense Department requested $3.9 billion for hypersonic weapons in FY2026, down from $6.9 billion in FY2025.

## Related case files

- [EKV: Exoatmospheric Kill Vehicle (DD-011)](https://detailenjoyer.com/case/ekv/): The interceptor side: a kill vehicle built to hit incoming warheads head-on.
- [Supersonic Striker (DD-036)](https://detailenjoyer.com/case/supersonic-striker/): Another high-speed strike platform: the B-1B, which carries cruise missiles.
- [Railguns (DD-151)](https://detailenjoyer.com/case/railguns/): I linked more high-speed weapons
- [Ballistic Trident (DD-627)](https://detailenjoyer.com/case/ballistic-trident/): Another long-range strike weapon
- [Iranian Missile Cities (DD-733)](https://detailenjoyer.com/case/iranian-missile-cities/): Another missile-technology case

## Reel vs. record

- **Missing context**: speed alone isn't new. Ballistic missile warheads also fly faster than Mach 5. What sets hypersonic weapons apart is their ability to maneuver, often on a lower, flatter path. [CRS IF11459; CRS IF11623]
- **Note**: Nuance on 'evading traditional missile defenses': ground radars may see them late, but CBO concluded they probably wouldn't be more survivable than ballistic missiles with maneuverable warheads, except against highly effective long-range defenses. [CRS IF11623; CBO]
- **Note**: Nuance on 'redefine modern warfare': that's contested. Supporters cite fast strikes on defended or time-sensitive targets, while critics say the weapons lack defined mission requirements. The DOD's FY2026 request fell to $3.9 billion from $6.9 billion. [CRS R45811; CRS IF11459]
- **Nuance**: Mach 5 is about a mile per second (roughly 5,800 km/h). The Reel's 6,100 km/h is a near-sea-level figure, because the speed of sound depends on air temperature. [CRS IF11623]
- **Confirmed**: heat is the main challenge. GAO says exteriors can exceed 2,000 °F, and CBO cites sustained temperatures up to 3,000 °F. [GAO; CBO]
- **Footage note**: the night clips of strikes over a city show hypersonic missile strikes, as confirmed by the creator. The Reel doesn't say which weapon, which country or which event they show, and the case doesn't identify them. [frames; creator confirmation]

## Video: Hypersonic Missiles: Mach 5 Isn't the New Part. Maneuvering Is

- Duration: 21.6 s · Published: 2025-06-22
- File: https://detailenjoyer.com/assets/videos/DLN2XInyNSH.mp4

### Transcript

DID YOU KNOW? Hypersonic missiles traveling beyond Mach 5, or roughly 6,100 kph, redefine modern warfare. These missiles, primarily boost glide vehicles or scramjet-powered cruise missiles, leverage aerodynamic lift to maneuver unpredictably within the atmosphere, evading traditional missile defenses. Their extreme speeds generate intense heat, up to 3,000 °F. NOW YOU KNOW!

## Questions & answers

**Q: What two types of hypersonic weapons does CRS describe?**  
A: Glide vehicles ride a rocket booster; cruise missiles use scramjets. _(Source: Write-up · Exhibit A (Two kinds) · Hypersonic weapons: background and issues for Congress (CRS R45811); Defense primer: hypersonic boost-glide weapons (CRS IF11459, updated May 14, 2026))_

**Q: What distinguishes a hypersonic glide vehicle from a ballistic warhead?**  
A: Ballistic warheads also exceed Mach 5. _(Source: Write-up · Exhibit B (Speed isn't the difference) · Defense primer: hypersonic boost-glide weapons (CRS IF11459, updated May 14, 2026); Hypersonic missile defense: issues for Congress (CRS IF11623))_

**Q: Why do ground radars detect hypersonic weapons late?**  
A: That leaves little time to launch interceptors. _(Source: Write-up · Exhibit C (Detection) · Hypersonic missile defense: issues for Congress (CRS IF11623))_

**Q: What peak sustained temperature does CBO cite?**  
A: GAO says exteriors can exceed 2,000 °F. _(Source: Write-up · Exhibit E (Heat) · Science & tech spotlight: hypersonic weapons (GAO-19-705SP); U.S. hypersonic weapons and alternatives (Congressional Budget Office, 2023))_

**Q: When did Russia reportedly field its first hypersonic weapons?**  
A: China likely followed as early as 2020. _(Source: Write-up · Exhibit F (Who has them) · Defense primer: hypersonic boost-glide weapons (CRS IF11459, updated May 14, 2026); Hypersonic missile defense: issues for Congress (CRS IF11623))_

## Sources

- [Hypersonic weapons: background and issues for Congress (CRS R45811)](https://www.congress.gov/crs-product/R45811)
- [Defense primer: hypersonic boost-glide weapons (CRS IF11459, updated May 14, 2026)](https://www.congress.gov/crs-product/IF11459)
- [Hypersonic missile defense: issues for Congress (CRS IF11623)](https://www.congress.gov/crs-product/IF11623)
- [Science & tech spotlight: hypersonic weapons (GAO-19-705SP)](https://www.gao.gov/products/gao-19-705sp)
- [U.S. hypersonic weapons and alternatives (Congressional Budget Office, 2023)](https://www.cbo.gov/publication/58924)

## Cite this case file

Easterling, Marcus. "Hypersonic Missiles." The Detail Department (DetailEnjoyer), case file DD-059, last updated Jun 22, 2025. https://detailenjoyer.com/case/hypersonic-missiles/