Purpose

The purpose of the payload is to test a novel airbrake system in near flight-like conditions, without risking the flight of the rocket itself.

Mission Requirements

Driven by interfacing with the rocket and ESRA rules and regulations. Required for a safe and legal flight.

No.	Requirement	Reference / Reason
1	The payload must conform to the volume and shape of the 3U cubesat standard.	TODO (DTEG reference) Points
2	The payload must have a mass of at least 4kg (8.8lb)	TODO (DTEG reference)
3	A maximum of 20% of the payload mass can be non-functional.	TODO (DTEG reference)
4	The payload must not influence the flight of the rocket in any way. (It should be "replaceable with ballast mass").	TODO (DTEG / HeroX reference)
5	The payload must be able to launch in a window of X hours maximum.	Can't reduce pad time requirements of rocket.
6	TODO all the deployable rules	Stem from Derived Requirements no. 7

Driven by the primary mission of the payload. Not necessary for a safe/legal flight, but necessary for a nominal experiment.

No.	Requirement	Reference / Reason
1	The payload must have an airbrake.
2	The effectiveness of the airbrake must be evaluated and verified.

Derived from high-level mission and objective requirements.

No.	Requirement	Reference / Reason
1	The airbrake should integrate easily into a rocket.	Purpose of experiment is to use for a future flight on a rocket.
2	The airbrake resistance must be actively controlled.	Need active control for use as a control system on a rocket.
3	The airbrake must be electronically controlled.	Future rocket will be using electronic control.
4	The position of the airbrake must be measured.
5	The impact of the airbrake on the payload body acceleration must be measured.
6	Flight conditions must be measured, including: Angular velocity (3 orthogonal axes) Angular position (3 orthogonal axes) Linear Acceleration (3 orthogonal axes) Pressure Temperature Humidity
7	The payload must be deployable.	Need to measure effectiveness of break, but cannot effect flight of rocket (including descent).
8	The payload should maximize descent velocity.	Higher velocity is a closer simulation of flight on a real rocket.
9	The payload should remain in a consistent orientation during descent, e.g. no "tumbling".