The Featherweight Blue Jay Plus Altimeter is an advanced, compact dual-deployment altimeter designed for amateur rocketry, offering sophisticated features at an affordable price point of $100.

Key Features

Size and Installation
- Dimensions: 1.45" long x 0.65" wide
- Easy installation with 2 screw terminals per e-match
- Built-in magnetic switch for simple activation

Connectivity and Interface
- Bluetooth connectivity to the Featherweight UI phone app (iOS and Android)
- Real-time sensor health and continuity voltage monitoring
- Immediate flight summary download post-landing

Sensors and Data Logging
- Barometric pressure altitude sensor (10-1200 mbar range)
- 3-axis high-resolution accelerometer (+/- 32 Gs)
- 3-axis gyro tilt sensors
- Data recording at 50 samples/second

Deployment Capabilities
- Dual-deployment with 2 pyro channels
- Advanced programming for e-match firing before apogee
- Suitable for multi-stage flights and complex flight profiles

Flight Data Recording
- Peak altitude and speed
- Peak and average acceleration
- Booster burn time
- Coast to apogee time
- Apogee to ejection time
- Ejection altitudes and times
- Flight duration

Advanced Features

Multi-Sensor Apogee Detection
Employs fault-tolerant apogee detection using multiple sensors, ensuring accurate deployment even in flights exceeding 32 Gs during boost.

Inertial Navigation
Incorporates gyro-based tilt calculation and inertial navigation for comprehensive flight analysis.

Ground Testing
Includes a ground test feature for charge testing, recording video and on-board data.

Flight Simulation
Offers a sophisticated flight simulation tool for pre-flight verification of deployment settings.

Performance and Limitations

• Power consumption: 15mA
• Input power compatibility: 3V-12V
• Suitable for e-matches but not igniters due to limited power hold-up time (15 msec)
• Barometric sensor tested up to 75,000 feet, with reliable performance confirmed up to 35,000 feet

What's Included

• Blue Jay+ altimeter
• Mounting Hardware (nuts, bolts)

What's NOT Included

• Batteries/chargers
• Blue Jay Power Starter Kit (sold separately)
• E-Matches

What's Not Needed

Cellular service at launch site

Directional antenna

The Featherweight Blue Jay Plus Altimeter combines advanced features with user-friendly design, making it an excellent choice for rocketeers seeking a capable dual-deployment solution with multi-stage flight capabilities.