Editing Model rocket (section)

==High-power rocketry==
[[File:Rocket Fleet post XPRS 2024.jpg|thumb|Several high-power rockets]]
{{Main|High-power rocketry}}
As with low-power model rockets, high-power rockets are also constructed from lightweight materials. Unlike model rockets, high-power rockets often require stronger materials such as [[fiberglass]] to withstand the higher stresses during flights that often exceed speeds of Mach 1 (340&nbsp;m/s) and over {{convert|3,000|m|ft|abbr=on}} altitude.
Because of the potential risk to other aircraft, coordination with proper authorities is often required.

High-power rockets are propelled by larger motors ranging from class H to class O, and/or weigh more than 3.3&nbsp;lbs or 1,500 [[gram]]s at liftoff. Their motors are almost always reloadable rather than single-use, in order to reduce cost. Recovery and/or multi-stage ignition may be initiated by small on-board computers, which use an altimeter or accelerometer for detecting when to ignite engines or deploy parachutes.

High-power model rockets can carry large payloads, including cameras and instrumentation such as [[GPS]] units.

===Differences from model rocketry===
A high-power rocket is typically:

*The rocket weighs more than 1,500 [[gram]]s
*The rocket is rarely made out of metallic and high performance materials, such as [[Aluminum]] and [[carbon fiber]], as this is against industry safety standards required by National Association of Rocketry and Tripoli. Instead, fiberglass is often used in order to withstand the rigors of high power motors and flight.
*The motor used contains more than 125 grams of [[propellant]]
*The motor used has an impulse of more than 160 [[Newton-second]]s (is an H-class or above) or uses multiple motors with a total impulse of more than 320 Newton-seconds.
*Exact requirements vary from one jurisdiction to another.