XP-53 Peregrine (RC Plane) 3D Printer Model

Author: @
License: CC BY-NC-SA
File formats: stl,stp,out
Download type: zip
Size:13.3MB

The file 'XP-53 Peregrine (RC Plane) 3D Printer Model' is (stl,stp,out) file type, size is 13.3MB.

Summary

Edit: Added a screenshot of the new working model of the plane. I'll be working on it some more and I'll eventually print it in the coming weeks.

The XP-53 "Peregrine" is a functional RC plane. I have built an almost fully assembled model of the plane (minus the parachute assemblies), however the plane is not quite finished. I have not flown the plane yet, as I am waiting for summer to come around and I'm trying to find a nice wide open space to fly it.

I don't claim to be an expert in the field of aerospace, and to be honest I had no idea what I was doing when I started this project a little over a year ago. However, I have done quite a bit of research and have learned a fair bit about how planes work in that time. This learning curve is the reason why some parts of the plane might not appear super aerodynamic (like the FPV camera holder), and why some of the design decisions I made might not be the best.

I don't know for certain if it will fly, but I will update this page once I get the chance to give it a test flight. I have put an STL of the full assembly of the plane into Autodesk Flow to find the theoretical drag coefficient (about 0.3 currently; mediocre for a plane but not bad as far as modern cargo vans go :D) as well as the actual drag that the plane experiences as varying speeds and angles of attack. I also created a Google Sheet and used it to auto-run plenty of physics equations relating to the thermodynamics of air, theoretical drag, theoretical lift, and the terminal velocity of the plane with a parachute deployed. I also used a small 1000 g weight scale to measure the static thrust of my working prototype of the Peregrine. Static thrust comes out to be about 5.7 Newtons. According to that, data from Autodesk Flow, and my own calculations, the plane should have more than enough power to fly at speeds of over 50-60 miles per hour minimum. In fact, my calculations show that the plane has a theoretical top speed of just over 100 miles per hour, although I think that 80 or 90 is more realistic. Here's a general run-down of the stats of this plane:

 Total Mass:                    ~1.63 kg Static Thrust:                  5.7 N Thrust to Weight Ratio:         0.357 Top Speed:                     ~100 mph Cruising Speed (3 degree AoA):  48.6 mph

The plane also has a few contingency plans built into its design for use in case something goes horribly wrong mid-fight. The first contingency plan (Plan B) is to use the self balance mode of the 6-axis gyro in the plane. This will force the plane to try and auto-level itself to prevent crashing. If this doesn't work for some reason, Plan C is the last resort to save the plane from a brisk meeting with the ground (or water, that would be worse). Plan C involves jettisoning a parachute from one of two parachute capsules atop the plane, effectively dropping the plane's terminal velocity to below 10 mph. An impact at this velocity may still damage the plane, but it is certainly better than a 50 mph impact (that impact would have 25 times the amount of kinetic energy behind it!).

Also, the reason I named this plane the XP-53 is to sort of pay tribute to the XP-54, which is a real life plane made by Vultee in the early 1940's for the U.S. Air Force. The XP-54 is structurally similar to my plane, and has its engine in the same position as on mine. Funnily enough, I actually didn't design this plane to be similar to the XP-54, as I had no idea the XP-54 even existed until a few days ago (I've been working on this plane for a lot longer than that). Here's a link to the XP-54's Wikipedia article if you're curious as to what it looks like.

https://en.wikipedia.org/wiki/Vultee_XP-54

I have also included both STL and STEP files of every part and for the full assembly of the plane to allow for both ease of printing and ease of modification.

aero_lever.stl 243.2KB
aero_lever.stp 115.0KB
camera_holder.stl 33.1KB
camera_holder.stp 38.5KB
chassis_front_2.stl 949.9KB
chassis_front_2.stp 847.6KB
chassis_rear_2.stl 1.1MB
chassis_rear_2.stp 1.1MB
chute_barrel.stl 786.9KB
chute_barrel.stp 555.4KB
chute_cover.stl 862.9KB
chute_cover.stp 233.1KB
chute_servo_cover.stl 186.2KB
chute_servo_cover.stp 127.0KB
dorsal_fin.stl 406.0KB
dorsal_fin.stp 377.4KB
dorsal_stabilizer.stl 54.2KB
dorsal_stabilizer.stp 25.4KB
elevator_1.stl 157.4KB
elevator_1.stp 56.4KB
elevator_2.stl 29.4KB
elevator_2.stp 37.8KB
elevator_3.stl 26.7KB
elevator_3.stp 27.0KB
extension.stl 859.1KB
extension.stp 335.8KB
extension_cover_top.stl 877.2KB
extension_cover_top.stp 280.9KB
front_wheel_holder_f.stp 40.8KB
front_wheel_holder_m.stp 42.2KB
lg_front_1.stl 290.4KB
lg_front_1.stp 119.7KB
lg_front_2.stl 22.5KB
lg_front_2.stp 36.3KB
lg_front_aero_cover.stl 1.7MB
lg_front_aero_cover.stp 223.0KB
lg_front_new.stl 1.1MB
lg_front_new.stp 531.7KB
lg_rear_1.stp 136.6KB
lg_rear_2.stp 172.1KB
nose_cone.stl 1.3MB
nose_cone.stp 576.6KB
plane_2_asm.stp 10.8MB
plane_2_dont_print_this_file.stl 5.5MB
rear_cone.stl 2.6MB
rear_cone.stp 461.5KB
rear_fin.stl 97.1KB
rear_fin.stp 95.9KB
rear_fin_elevator.stl 47.7KB
rear_fin_elevator.stp 37.5KB
rear_lg_new.stl 152.9KB
rear_lg_suspension_1.stl 855.4KB
servo_brace.stl 26.3KB
servo_brace.stp 44.6KB
stabilizer_cover_left.stp 32.8KB
stabilizer_cover_right.stl 53.2KB
std.out 258.0B
strut_bottom.stl 587.6KB
strut_bottom.stp 273.5KB
strut_top.stl 583.6KB
strut_top.stp 260.1KB
tire_tpu.stp 13.7KB
wheel_cover_f.stl 88.7KB
wheel_cover_m.stl 58.3KB
wing_1.stl 372.9KB
wing_1.stp 286.7KB
wing_2.stl 186.5KB
wing_2.stp 48.0KB