PHS Student Launch Team 2 PowerPoint Presentation, PPT - DocSlides

PHS Student Launch Team 2

Preliminary Design

Review Presentation

Launch Vehicle Dimensions

Size and massLength: 110”Diameter: 5.5”Mass Without Motor: 236.36 ozMass With Motor: 311.44 oz

Stability Margin

CP (from nose): 77.03 in.

CG (without motor): 48.37 in.

CG (with motor): 60.14 in.

Launch Vehicle Materials

Blue Tube AirframesFiberglass Bulkheads, Fins, and Centering Rings 3D Printed ABS Plastic Payload Plates ½” Tubular Kevlar Recovery Harness84” and 24” Nylon ParachutesPlastic, 13” Nosecone

Material Justifications

½” Kevlar has a test strength of 7200 lbs.

ABS is stronger than PLA, and can be used with adhesives.

Blue Tube is durable and has high resistance to abrasion and cracking.

Fiberglass is a strong composite material, with lower cost than alternatives such as carbon fiber.

Parachutes minimize descent rate to 22.2 ft/s, while decreasing drift.

The nosecone reduces drag on the vehicle and secures the payload.

The team will follow all safety precautions in the NAR safety handbook.The safety officer will oversee all construction and launch procedures.The team will follow the Launch and Assembly checklist detailed in the PDR.All material, tool and environmental hazards have been analyzed, and mitigations have been planned.

Vehicle Safety Verification

Vehicle Safety Test Plan

Ground ejection tests will be run to test the recovery system.

Fins, bulkheads and other epoxied components will be stress tested.

D-Links will be wrenched tight.

Entire rocket assembly will be functionally tested during test flight.

Motor Selection and Justification

Aerotech K1050 White LightningTotal Impulse: 2426.4 Ns Average Thrust: 1132.9 NMaximum Thrust: 2172.0 N

Simulation Data

Predicted Altitude: 5539 ft.Thrust to Weight Ratio: 14/1.Rail Exit Velocity: 95.71 f/s.

Flight Profiles

Launch Vehicle Verification

The team will use detailed simulations to ensure the vehicle reaches a maximum altitude of 5280 ft.

The launch vehicle will use only one K1050WL motor.

The use of two parachutes will ensure that the vehicle is recoverable.

V

ehicle

will comprise only three sections

.

Drag will be hand calculated to ensure proper simulation data.

V

ehicle

will use a 12 volt firing system to initiate launch

.

Vehicle Test Plan

A sub-scale launch vehicle will be flown in December.

Data from this flight will be used to adjust the full-scale, as necessary.

The full-scale vehicle will be flown in February with NEFAR, an affiliate of NAR and TRA.

Discussion of Subsystems

Recovery: 84“ main and 24” drogue parachutes½” D-Links ¼” Eyebolts½” Tubular Kevlar Recovery Harness2 PerfectFlite Stratologger AltimetersUpper Body Tube:48” long, 5.5” wide Blue Tube Airframe5.34” Fiberglass BulkheadPayloads

Discussion of Subsystems (Cont.)

Nosecone: Plastic, Ogive 13in” long, 4in” shoulderCoupler:12in” long, 5.34in”OD Blue Tube coupler2in” long, 5.5in”OD Blue Tube bandtwo 5.19in”OD, ¼in” thick Fiberglass BulkheadsAltimeter Bay and Altimeters

Discussion of Subsystems (Cont.)

Lower Body Tube 46” long, 5.5” wide Blue Tube Airframe5.34” wide, ¼” thick Centering Ring and Thrust Plate25” long, 54mm wide Blue Tube Motor Mount4 Half Parabolic Fiberglass Fins

Dimensional Drawing

Drogue

Main

Coupler

Lower stage

Upper stage and payload

Recovery Schematic

Payload Design

5.3”, 3D printed base plates.

2 T-rails.Arduino UNOAntenna, made of solid core wire and Mega-Ohm resistor.Power provided by 9V batteries and Trail fixtures.

Payload Schematic

Payload Verification

The team’s payload will collect data on the voltage of residual EMI in the atmosphere. No part of the payload will be jettisoned, and no UAVs will be used. The payload will be secured by T-rail and plates between a bulkhead and nose cone, ensuring its safe recovery.

Payload Test Plan

Ground Test - Test of the payload within the work area.

Functional Test - Test of the payload during the test launch.

Prior to launch, all payload systems will be checked to ensure functionality.

Outreach

Payload DesignEMF DetectorsPlantation Holiday ParadeOpen Lab Nights