# heat. (DD-595)

> Rocket engines produce intense heat by burning propellants such as liquid hydrogen and liquid oxygen. The Reel says liquid-fueled engines like the Space Shuttle's produce exhaust above 3,000 degrees Celsius, hot enough to melt steel, and release energy at up to 10 gigawatts; I left the power figure attributed to the Reel. Launch pads use flame trenches to divert exhaust and water deluge systems to absorb heat and sound. The footage, credited to astronomy4u, shows a rocket launch.

- Department: Space (also Science)
- First published: 2025-06-13
- Last updated: 2025-06-13
- Permalink: https://detailenjoyer.com/case/heat/
- Author: Marcus Easterling (DetailEnjoyer), The Detail Department

## Quick facts

- **DD-595-F01**: Combustion. _(Write-up · Exhibit A (Source))_
- **DD-595-F02**: Above 3,000 C, per the Reel. _(Write-up · Exhibit B (Exhaust))_

## Write-up

Rocket exhaust can top 3,000 degrees Celsius. Launch pads need flame trenches and water deluges.

1. **Source**: Combustion.
2. **Exhaust**: Above 3,000 C, per the Reel.
3. **Propellants**: LH2 and LOX.
4. **Power**: Up to 10 GW, per the Reel.
5. **Protection**: Flame trench, deluge.

## Related case files

- [Deluge Days (DD-594)](https://detailenjoyer.com/case/deluge-days/): I linked the water that cools launch pads

## Reel vs. record

- **Note**: None needed.

## Video: heat.: Rocket Exhaust Can Top 3,000 Degrees Celsius

- Duration: 23.2 s · Published: 2025-06-13
- File: https://detailenjoyer.com/assets/videos/DK2B4bLRyGQ.mp4

### Transcript

Did you know? Rocket take-offs produce intense heat from chemical combustion in their engines. Liquid-fueled rockets like the Space Shuttle generate exhaust temperatures exceeding 3,000 degrees Celsius, hot enough to melt steel. The heat results from burning propellants, such as liquid hydrogen and oxygen, releasing energy at rates up to 10 gigawatts. This extreme thermal output requires flame trenches and water deluge systems to absorb and dissipate heat. NOW YOU KNOW!

## Questions & answers

**Q: Heat source?**  
A: Burning. _(Source: Write-up · Exhibit A (Source) · Wikipedia: Rocket engine)_

**Q: Exhaust temp?**  
A: Per the Reel. _(Source: Write-up · Exhibit B (Exhaust) · Wikipedia: Rocket engine)_

**Q: Shuttle main propellants?**  
A: Cryogenic. _(Source: Write-up · Exhibit C (Propellants) · Wikipedia: Rocket engine)_

**Q: Diverts exhaust?**  
A: Pad. _(Source: Write-up · Exhibit D (Power) · )_

**Q: Absorbs heat and sound?**  
A: Pad. _(Source: Write-up · Exhibit E (Protection) · Wikipedia: Flame trench)_

## Sources

- [Wikipedia: Rocket engine](https://en.wikipedia.org/wiki/Rocket_engine)
- [Wikipedia: Flame trench](https://en.wikipedia.org/wiki/Flame_trench)

## Cite this case file

Easterling, Marcus. "heat.." The Detail Department (DetailEnjoyer), case file DD-595, last updated Jun 13, 2025. https://detailenjoyer.com/case/heat/