# PWN-9 Kangaroo

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The **XPWN-9A Kangaroo** was a project to develop a [sounding rocket](/source/Sounding_rocket) intended for use by the [United States Navy](/source/United_States_Navy). Using an unconventional design, flight tests were unsuccessful, and it was not put into production.

## History

The Kangaroo was designed as a "boosted dart" type rocket, the unpropelled "[dart](/source/Dart_(rocketry))" containing the payload being housed within the solid booster rocket's propellant, where, upon burnout, it would be ejected from the rocket by a pyrotechnic device.[1] Rail launched, Kangaroo was intended to be used to measure radiation levels and the density of [micrometeorites](/source/Micrometeorite) prior to the launch of crewed space flights.[2]

The initial design of what was then called **Kangaroo-Dart** was developed by the Aeromachnics Branch of the U.S. Navy's Pacific Missile Range.[1] Detailed design was performed by [Aerojet](/source/Aerojet);[3] however when bids for developing the prototype, given the designation XPWN-9A, were requested, [United Technologies Corporation](/source/United_Technologies_Corporation) submitted the winning bid and was given a contract for construction of prototypes in November 1969.[3]

Flight trials of the Kangaroo booster were undertaken at the Pacific Missile Range at [Point Mugu](/source/Point_Mugu); they proved unsuccessful, and production of the rocket was not undertaken.[3]

## References

### Citations

1. Bollermann 1970, p.337.

1. "[Sounding rocket from UTC](https://www.flightglobal.com/pdfarchive/view/1970/1970%20-%200127.html) [Archived](https://web.archive.org/web/20140512215019/https://www.flightglobal.com/pdfarchive/view/1970/1970%20-%200127.html) 2014-05-12 at the Wayback Machine". *Flight International*, 15 January 1970, p.101. Accessed 2014-05-11.

1. Parsch 2003

### Bibliography

- Bollermann, Bruce (1970). [*A Study of 30 Km to 200 Km Meteorological Rocket Sounding Systems: Literature and data review*](https://ntrs.nasa.gov/citations/19700020646). Vol. 1, Part 2. Huntsville, AL: [NASA](/source/NASA): [George C. Marshall Space Flight Center](/source/George_C._Marshall_Space_Flight_Center). [Archived](https://web.archive.org/web/20240424185338/https://ntrs.nasa.gov/citations/19700020646) 2024-04-24 at the Wayback Machine. Retrieved 2024-04-24. – via [NTRS](/source/NASA_Technical_Reports_Server)
- Parsch, Andreas (2003). ["Aerojet/UTC PWN-9 Kangaroo"](http://www.designation-systems.net/dusrm/n-9.html). *Directory of U.S. Military Rockets and Missiles*. designation-systems.net. [Archived](https://web.archive.org/web/20140419153000/http://www.designation-systems.net/dusrm/n-9.html) 2014-04-19 at the Wayback Machine. Retrieved 2014-05-11.

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Adapted from the Wikipedia article [PWN-9 Kangaroo](https://en.wikipedia.org/wiki/PWN-9_Kangaroo) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/PWN-9_Kangaroo?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.