Team 8A
AeroDynamos
Favion Harvard & Rachel Kabala
Overview & Problem Statement
Problem Statement
Habitat for Aviation’s aircraft hangar is unable to support Cessna 150 and Cherokee 140 due to an infrastructure design which does not allow the planes to move back and forth. They need a way to allow for sideways movement of the planes, allowing for aircraft to be present within the students learning space.
Overview
Over the years, North A,erica will start having a shortage of between 12,000 to 18,000 of aviation maintenance technicians. This problem promoted an organization in Swanton, Vermont called Habitat for Aviation who plan to promote the next generation of aviation maintenance technicians and avionics specialists by teaching youth trades that would allow them to gain experience in these backgrounds. The welcoming environment would be where youth can deeply immerse themselves in the modern technology of aviation, learn a plethora of physics concepts, and give students space to be around airplanes in the hangar connected to the building.
Prototype
Prototype 1: Tire Trailer
Would have barriers preventing the wheels from coming out.
Allow the wheels to roll up 5 degree incline.
Create four walls that would keep wheel in place.
Latch would hold the side that inclines up.
Down sides would be weight distribution and making sure the wheels did not move when the plane rolled onto the platform.
Prototype 2: Tire Elevator
Use presure to rise the tire smilar to a car dolly.
have a full 360 wall coverage that will bind wheel in place
Castor wheels at the bottom to promote full movement
Downside: the wheel of an airplane has an inboard and outboard rim. Too much motion, unnecessary mechanism
Prototype 3: Scissor Tire
This product would work similar to scissor:
Apply pressure to the wheels, and allow the wheel to be lifted.
Accounts for weight distribution.
Allows for operation from 1-2 people.
We choose this prototype because if fit better with specification and solved problems faced by the other products.
Testing and Feedback
Weight Analysis: CESSNA 150 & CHEROKEE PA-28 140
- Cessna 150 empty weight: 1,122 lb (509 kg)
- CESSNA 150 FUEL CAPACITY AT MAX: 22.5 US gal (18.7 imp gal; 85 L)
- CESSNA 150 EMPTY WEIGHT + FUEL CAPACITY:
- CONVERTING GALLONS TO POUNDS: 22.5 GALLONS = 187.7 LBS
- CESSNA 150 FUEL CAPACITY WEIGHT IN IBS + CESSNA 150 EMPTY WEIGHT= 1,309.7 LBS
- Cherokee 140 empty weight: 1,290 lbs
- Cherokee 140 FUEL CAPACITY AT MAX:
- Cherokee 140 EMPTY WEIGHT + FUEL CAPACITY: 36 gallons
- CONVERTING GALLONS TO POUNDS: GALLONS = 300IBS
- CHEROKEE 140 FUEL CAPACITY WEIGHT IN IBS + CHEROKEE 140 EMPTY WEIGHT= 1,590
80/20 Aluminum T-Slot Framing
Forces Present: Gravity, Friction, Normal Force,
Applied Force = NET FORCE
(calculating the NET force that will be present when utilizing the dolly because comparing 80/20 to lumber and steel; Its light lightweight, strong, and made to endure both indoor and outdoor use, resisting rust and corrosion.)
Friction:
- Utilized Black 80/20 with black coating to avoid too much Friction
- 80/20's 6105-T5* alloy yield strength of 35,000 psi compares to A36 carbon steel's yield strength of 36,000 psi.
- aluminum weights 1/3 as much as iron, steel, copper or brass. (BASICALLY 80/20 IS REALLY LIGHT!).
Additionally
- 80/20 is comparable to lumber and steel yet lightweight, strong, and made to endure both indoor and outdoor use, resisting rust and corrosion.
Tire Width Test
- Wanted to make sure the wheel fits between the product.
- Observed the wheel, and saw how movement of the wheel worked.
- Tested the best ways of gripping the wheel, making sure that it does not slip.
- Approximate Wheel diameter: 15 inches.
P = F/A
Weight Testing
- Able to determine that the material we were using were strong enough, but also not too heavy.
- Able to assemble them so that they can hold the weight of the airplane.
- Created ways of purchasing cheaper products that was durable.
FeedBack
“ I feel like i would definitely consider using this in its complete state. Have flown into hangers that have a hill and so often using the towbar up hill is a pain”
“Well alrighty then. I would say yes, if there were a situation where I needed better maneuverability or if I needed to move the aircraft horizontally it would be a good tool, but only for small aircraft. The planes y’all saw are some of the smallest planes out there and I think anything larger would require a tool with a motor to get the plane on the wheels.”
Specifications
1 ~ Facilitates Plane Movement in All Directions
Has the ability to move in 360-degree direction
Moves all parts of the system at one time.
2 ~ Adaptability to Different Aircraft Models
Adjust to other planes kept by Habitat for Aviation.
Withhold the weight of the plane, and distribute weight equally to each part of the design.
3 ~ Ease of Use
Enables plane movement with only one or two people.
Easy for youth to use, and understand.
Easy to set up and not impossible to pick up or move around.
4 ~ Sustainability
Can last a lifetime, and can be repaired by the user if a part is broken off.
Use parts that are long-lasting and do not provide harm to the environment.
Try to add reusable parts.
5 ~ Feasibility
Has the ability to be tested and made during the timeline we have planned out.
All skills can be used with minimum knowledge needed to use.
Works for the small hangars, and is able to move planes into the hangar.
6 ~ Cost Efficient
Use a minimal amount of materials.
FInd or make materials cheaper, but still works well and is not harmful.
7 ~ Safety
Secures wheels from falling out of place.
Kid friendly and usable by all kids.
8 ~ Accessibility
Usable for many demographics.
Can be designed to fit accommodation if needed.
Prioritized for women and kids.