Estes 1469 Tandem X Rocket Launch Set User Manual

1. Introduction

The Estes 1469 Tandem X Rocket Launch Set provides an engaging experience for model rocket enthusiasts. This set includes two distinct model rockets, the Amazon and the Crossfire ISX, along with a complete launch system. This manual details the assembly process, required materials, launch procedures, safety guidelines, and technical specifications to ensure a successful and safe rocketry experience.

Image 1.1: The Estes Tandem X Rocket Launch Set packaging, displaying both the Amazon and Crossfire ISX model rockets.

2. Safety Information

Model rocketry involves inherent risks. Adherence to safety guidelines is paramount for preventing accidents and ensuring a positive experience. Always follow the NAR (National Association of Rocketry) model rocket safety code during operation.

• Launch Site: Select a large, open area free of dry weeds, brown grass, or other flammable materials. Ensure sufficient clear space for rocket ascent and descent.
• Distance: Maintain a safe distance of at least 15 feet from the launch pad during countdown and launch.
• Adult Supervision: Adult supervision is recommended for users under 12 years of age.
• Pre-Launch Check: Always perform a thorough pre-launch check of the rocket and launch system.
• Ignition: Only use the provided Electron Beam Controller for ignition. Insert the safety key only when ready to launch.
• Recovery: Ensure the recovery system (parachute) is properly packed to allow for safe descent. Do not attempt to catch a falling rocket.
• Engines: Use only Estes-approved model rocket engines. Never modify engines or use homemade propellants.
• Weather Conditions: Do not launch in high winds, near power lines, or in adverse weather conditions.

3. What's Included

The Estes 1469 Tandem X Rocket Launch Set includes the following components:

• Amazon Rocket Kit (E2X - Easy to Assemble)
• Crossfire ISX Rocket Kit (Skill Level 1)
• Two Plastic Parachutes (one for each rocket)
• Porta-Pad II Launch Pad
• Electron Beam Launch Controller
• Instruction Guide

Image 3.1: All components included in the Estes Tandem X Launch Set, laid out for inspection.

4. Required Materials (Not Included)

To build and launch your rockets, you will need to acquire the following items separately:

• Estes Model Rocket Engines (specific types listed in Section 8)
• Starters (included with engines)
• Recovery Wadding
• 4 high-quality 1.5-volt AA alkaline batteries (for Electron Beam Controller)
• Scissors
• Fine sandpaper
• Carpenter's glue (e.g., white glue)
• Plastic cement (for plastic parts)
• Hobby knife
• Masking tape

Image 4.1: Visual representation of additional tools and supplies required for building and launching the rockets.

Image 4.2: Recovery wadding, essential for protecting the parachute from engine ejection charge heat.

5. Assembly Instructions

Follow the detailed instructions provided in the included instruction guide for each rocket model. General steps are outlined below.

5.1. Amazon Rocket (E2X - Easy to Assemble)

The Amazon rocket is designed for quick and easy assembly, typically within an hour. It features pre-colored plastic parts and self-stick graphics, requiring no painting.

1. Fin Assembly: Glue the pre-colored plastic fins to the body tube according to the alignment marks.
2. Nose Cone & Parachute: Attach the recovery parachute to the nose cone and shock cord. Secure the shock cord to the body tube.
3. Decals: Apply the self-stick decals to complete the rocket's appearance.

5.2. Crossfire ISX Rocket (Skill Level 1)

The Crossfire ISX is an intermediate-level kit that requires a bit more attention to detail, typically taking longer to assemble. It features laser-cut wood fins and self-stick decals.

1. Fin Preparation: Sand the laser-cut balsa fins smooth.
2. Fin Attachment: Carefully glue the fins to the body tube, ensuring proper alignment for aerodynamic stability.
3. Nose Cone & Parachute: Attach the recovery parachute to the nose cone and shock cord. Secure the shock cord to the body tube.
4. Finishing: Apply self-stick decals. Painting is optional but can enhance the rocket's appearance.

Image 5.1: A collection of rocket parts, including body tubes, nose cones, fins, and recovery systems, ready for assembly.

6. Launch System Setup

The launch system consists of the Porta-Pad II Launch Pad and the Electron Beam Controller.

6.1. Porta-Pad II Launch Pad

1. Assemble Legs: Attach the three legs to the central hub of the launch pad.
2. Insert Launch Rod: Slide the launch rod through the guide tube on the launch pad. Ensure it is securely seated.
3. Blast Deflector: Position the blast deflector plate at the base of the launch rod.
4. Placement: Place the assembled launch pad on a flat, stable surface in your chosen launch area.

Image 6.1: The Estes Porta-Pad II Launch Pad, ready for rocket placement.

6.2. Electron Beam Controller

1. Battery Installation: Open the battery compartment and insert 4 new 1.5-volt AA alkaline batteries, observing correct polarity. Close the compartment.
2. Connect Leads: Connect the controller's leads to the launch pad. The red clip attaches to the launch rod, and the black clip attaches to the igniter leads.
3. Safety Key: Keep the safety key removed until immediately before launch.

Image 6.2: The Estes Electron Beam Launch Controller, used for safe remote ignition.

7. Operating Instructions (Launching)

Once your rocket is assembled and the launch system is set up, follow these steps for a safe launch:

1. Prepare Rocket: Insert the chosen Estes engine into the rocket's engine mount. Secure the igniter into the engine nozzle.
2. Insert Wadding: Gently insert recovery wadding into the body tube above the engine to protect the parachute.
3. Pack Parachute: Carefully fold and pack the parachute into the body tube.
4. Place Rocket on Pad: Slide the rocket onto the launch rod, ensuring it rests on the blast deflector.
5. Connect Igniter: Attach the micro-clips from the Electron Beam Controller to the igniter leads. Ensure the clips do not touch each other or the metal engine casing.
6. Move to Safety: Retreat to a safe distance (at least 15 feet) from the launch pad.
7. Insert Safety Key: Insert the safety key into the Electron Beam Controller.
8. Countdown: Announce a clear countdown (e.g., "5, 4, 3, 2, 1, Launch!").
9. Launch: Press and hold the launch button until the rocket ignites and lifts off.
10. Recovery: Observe the rocket's flight and parachute deployment. Recover the rocket after it lands.

8. Engine Selection

Proper engine selection is crucial for optimal flight performance and safety. Refer to the table below for recommended engines for each rocket model.

Note: All Estes rocket engines are sold separately. The engine designation (e.g., C6-5) indicates thrust class, average thrust, and delay time before ejection charge.

Image 8.1: A summary of technical specifications, including engine recommendations and projected altitudes for both rockets.

9. Flight Sequence

Understanding the typical flight sequence of a model rocket helps in anticipating its behavior and ensuring safe recovery.

1. Ignition & Thrust: The engine ignites, providing thrust that propels the rocket upwards.
2. Powered Flight: The rocket accelerates rapidly, guided by the launch rod.
3. Engine Burnout: The engine's propellant is consumed, and thrust ceases.
4. Coast Phase: The rocket continues to ascend due to momentum, slowing down until it reaches its apogee (highest point).
5. Ejection Charge: A small charge in the engine ignites, ejecting the nose cone and deploying the recovery parachute.
6. Recovery: The parachute slows the rocket's descent, allowing it to land safely for reuse.

Image 9.1: A visual guide to the standard flight sequence of a model rocket, from launch to recovery.

10. Maintenance

Proper maintenance ensures the longevity and continued performance of your model rockets and launch system.

• Cleaning: After each launch, inspect rockets for any residue or damage. Clean the engine mount area.
• Parachute Inspection: Check parachutes for tears or tangles. Repair or replace as needed.
• Shock Cord: Inspect the shock cord for fraying or damage. Replace if compromised.
• Launch Pad: Keep the launch rod clean and free of debris. Ensure all launch pad components are secure.
• Controller: Remove batteries from the Electron Beam Controller when not in use to prevent corrosion. Store in a dry place.
• Storage: Store rockets in a cool, dry place away from direct sunlight and extreme temperatures.

11. Troubleshooting

Here are some common issues and their potential solutions:

• Rocket Fails to Launch:
  • Check battery charge in the controller.
  • Ensure igniter is properly seated in the engine and micro-clips are securely attached.
  • Verify safety key is fully inserted.
  • Inspect igniter for damage; replace if necessary.
• Erratic Flight Path:
  • Check fins for damage or improper alignment.
  • Ensure launch rod is straight and rocket slides freely.
  • Verify correct engine is used for the rocket model.
  • Avoid launching in windy conditions.
• Parachute Fails to Deploy:
  • Ensure recovery wadding was used and properly packed.
  • Check for obstructions in the body tube.
  • Verify engine's ejection charge delay is appropriate for the rocket's altitude.
• Rocket Lands Hard/Damaged:
  • Parachute may not have deployed or was too small.
  • Landing area may have been unsuitable (e.g., hard surface).

12. Specifications

Detailed specifications for the Amazon and Crossfire ISX model rockets:

13. Support and Contact

For further assistance, questions, or to purchase additional components, please visit the official Estes website or contact their customer support.

Estes Industries
Website: www.estesrockets.com