Changes

=== Flight Characteristics ===

=== Flight Characteristics ===

[[File:Performance_Altitude_Speed.png|image]]<br />

[[File:Pegasus_Performance_Altitude_Speed.png|image]]<br />

Telemetry is accomplished using two XBee 9B 900MHZ 250MW long range radio transmitters. Under line of sight conditions, these are expected to achieve a maximum range of 28 miles. We equipped both with 900 MHZ, low impedance, RP-SMA duck antennas.

Telemetry is accomplished using two XBee 9B 900MHZ 250MW long range radio transmitters. Under line of sight conditions, these are expected to achieve a maximum range of 28 miles. We equipped both with 900 MHZ, low impedance, RP-SMA duck antennas.

[[File:Avionics_Block_Diagram.png|thumb|300px|right|Avionics block diagram]]

[[File:Pegasus_Avionics_Block_Diagram.png|thumb|300px|right|Avionics block diagram]]

=== Avionics Teensy Pinout ===

=== Avionics Teensy Pinout ===

The in-flight tracking will use a XBee Pro module and an Adafruit GPS receiver with a ceramic antena.

The in-flight tracking will use a XBee Pro module and an Adafruit GPS receiver with a ceramic antena.

[[File:Avionics_XBee.png|80px]]

[[File:Pegasus_Avionics_XBee.png|80px]]

For the in-flight communication and redundant tracking, the rocket will rely on live communication via XBee transmitters and the use of a small SPOT GPS for precise location of the rocket.

For the in-flight communication and redundant tracking, the rocket will rely on live communication via XBee transmitters and the use of a small SPOT GPS for precise location of the rocket.

* Other simple applications to monitor range or other basic parameters.

* Other simple applications to monitor range or other basic parameters.

[[File:Avionics_Ground_Station.png|800px|center]]

[[File:Pegasus_Avionics_Ground_Station.png|800px|center]]

=== Landing ===

=== Landing ===

Upon the need for the backup recovery system, a pyrodex ejection charge located behind the parachute will be ignited from a command given by the altimeter. This charge will force out the parachute, pushing the movable bulkhead out of the forward airframe with it. Since the shockcord is going to be traveling a large distance within the rocket, the shockcord will have a tennis ball around it to mitigate possible zippering of the rocket.

Upon the need for the backup recovery system, a pyrodex ejection charge located behind the parachute will be ignited from a command given by the altimeter. This charge will force out the parachute, pushing the movable bulkhead out of the forward airframe with it. Since the shockcord is going to be traveling a large distance within the rocket, the shockcord will have a tennis ball around it to mitigate possible zippering of the rocket.

[[File:Design_Bulkheads.png|600px|center]]

[[File:Pegasus_Design_Bulkheads.png|600px|center]]

= Manufacturing and Assembly =

= Manufacturing and Assembly =