November 7, 2014

Length: 99.875 inches Diameter: 6.00 inches Mass: 277.42 oz. /

17.34lbs. Span: 13.50 inches Center of Gravity: 56.3919

inches Center of Pressure:

64.0575 Safety Margin: 1.28

Flight Sequence

Dual Deployment◦ Drogue chute and

main chute

Black powder charges will be calculated using vernk.com and verified with ground testing

Dual deployment system

Two MAWD altimeters used for redundancy◦ Measures barometric

pressure◦ “Mach” delay for safety◦ Deploys drogue parachute

at apogee◦ Deploys main parachute at

3000 ft AGL and payload parachute at 1000ft AGL

Will be programmed and Pre-tested for scale launch

Airframe – carbon fiber◦ superior strength to weight ratio◦ Ease of workability

Fins – birch plywood in carbon fiber◦ Combines the strength of both materials for a

more rigid, strong, and lightweight fin

Bulk-Head/Centering ring – 0.5 inch birch plywood ◦ Cabinet quality grain, few knots, and locally

available

Nosecone ◦ Will be purchased to insure proper functionality

West Systems Epoxy◦ Used to bind the above materials together as well

as some hardware (bolts, nuts, threaded rods)

Fins – symmetric shape and quantity allows for ease of construction, trapezoidal shape limits potential damage to fins upon landing

Diameter – 6” diameter allows for ease of assembly and plenty of work space. ◦ Also allows for better utilization of scrap

components, and expansion of internal components if necessary

AGSE Design

Payload securing

Critique Score 1/51 = Bad

5 = Good

Comments

Is this design safe? 4 This design will allow for ease of construction and eliminate safety concerns associated with more complex construction methods

Is this design limiting? 4 Altitude is expected to be reached and the design will accommodate larger motors and payload components

Does this design meet the requirements of the payload/rocket?

3 This current rocket design satisfies the requirements for the projected payload.

Will this design land safely? Parachute sizes, impact absorbing design?

4 The current size rocket and parachutes have the rocket descending rapidly under drogue, but slowing to under 25 ft/s under main.

Does this design maximize performance?

3 The rocket has been designed to accommodate the payload as well as larger motors as the design is refined.

Are the materials selected the best for this scenario?

4 Carbon fiber is a strong yet lightweight material that we have had success with in years prior. Past experience with phenolic tubing has yielded structural failure.

Any additional comments?

------- Conduct additional tests and review plan to ensure continued safety

Minimum velocity for stable flight: 25.63 ft/s

Exit rail velocity: 32.81 ft/s

A series of 3 rail beads will be used to ensure the rocket reaches adequate speed off of the rail while maintaining proper orientation

A series of sub-scale launches are planned and will be conducted to verify design

Construction and test of the sub-scale will take place from 11/23-12/14

Planning for construction of full-scale starting 12/14

At least one test flight with the final rocket will take place

Justifications 54.0 mm diameter

allows for easy down-scaling

Black Max Propellant provides the high visibility tracking of dense black exhaust

Manufacturer: AeroTech

Mfr. Designation: K513FJ

Motor Type: reload

Diameter: 54.0mm

Length: 41.0cm

Total Weight: 1647g

Average Thrust: 556.8N

Maximum Thrust: 658.3N

Total impulse: 1496.3Ns

Burn Time: 2.8s

S1: 340N/11.22lbs(

S2: 307/132.62oz

The handling of the motors, including purchasing and assembly, will be under the supervision of our NDRA members.

North Dakota Rocketry Association (NDRA) Section #628

Certified NDRA team mentor:◦ Dr. Tim Y. #76791 Level 2

We are planning to test fire the K513FJ motor in our static ground test. We are not planning a test of the sub-scale motor.

Sub-scale launch – November 22nd Full-scale test flight #1 – February 22nd

to March 8th Full-scale test flight #2 – March 18th to

April 6th Final launch – April 10th

Rocket launch◦ Reaching an altitude of 3000 feet at apogee.

Rocket recovery◦ The recovery system deploying properly at the

appropriate altitude and recovering the rocket on the ground such that it is deemed reusable for future launches

Payload◦ The payload should be ejected from the rocket

at 1,000 feet and return to the ground with its own parachute.

Physics Day at UND - November 12, 2012

This is a program for local middle school to high school students to learn about the many different facets of physics.◦ We gave a presentation

about rocketry◦ Introduced them to the

USLI program and shared our past history with the competition

◦ Reached about around 200 students.

Outreach at Grand Forks Area middle school

Our team is in the process of scheduling a date to visit the local middle schools.◦ For an entire day, we will teach a science class. ◦ Give a brief lecture about rocketry◦ Prior to us visiting, we will have the students

design rockets out of 2 liter pop bottles.◦ We will supervise and moderate the launch

water rockets◦ Have a Q & A session on why some rockets did

work and other did not. ◦ Expect to reach about 30-80 students.

Astronomy TalkScheduled for February

◦ Hour long lecture◦ Aimed at introductory level astronomy students◦ Content could include: History of Rocketry◦ By the date of the talk, we might be able to give

a demonstration of our AGSE

*The center of gravity is forward of the center of pressure (closer to the nosecone)