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[[File:Peregrine-graphics-v1.png|thumb|100px|Possible paint scheme.]]
[[File:Peregrine-graphics-v1.png|thumb|100px|Possible paint scheme.]]


Peregrine is built from a [https://wildmanrocketry.com/collections/3-fiberglass/products/mach-3 Wildman Mach 3] kit (75mm minimum diameter) and am planning for a launch at Airfest 2024. The flight will be on an [https://aerotech-rocketry.com/products/product_fe1f54bf-9bef-7bef-067f-44f3d7a29d86 AeroTech M685] motor and should exceed 30,000 feet AGL (preliminary simulations are showing 34k-35k). Construction beginning February 2024.
Peregrine is built from a [https://wildmanrocketry.com/collections/3-fiberglass/products/mach-3 Wildman Mach 3] kit (75mm minimum diameter) and am planning for a launch at Airfest 2024. The flight will be on an [https://aerotech-rocketry.com/products/product_fe1f54bf-9bef-7bef-067f-44f3d7a29d86 AeroTech M685] motor and should exceed 30,000 feet AGL (preliminary simulations are showing 34k-35k). Construction took place between February and August 2024.


* Primary altimeter: [https://altusmetrum.org/TeleMega/ Altus Metrum TeleMega] with a single 850mAh battery for electronics and pyro
* Primary altimeter: [https://altusmetrum.org/TeleMega/ Altus Metrum TeleMega] with a single 850mAh battery for electronics and pyro
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* Using [http://www.pro38.com/pdfs/Pro75_dimensions.pdf CTI Pro75 6G motor case] <s>with tailcone closure</s> (discovered CTI tailcone will not fit with AT nozzle &#128557;)
* Using [http://www.pro38.com/pdfs/Pro75_dimensions.pdf CTI Pro75 6G motor case] <s>with tailcone closure</s> (discovered CTI tailcone will not fit with AT nozzle &#128557;)
* Using [https://www.additiveaerospace.com/products/fly-away-rail-guides Additive Aerospace fly-away rail guide]
* Using [https://www.additiveaerospace.com/products/fly-away-rail-guides Additive Aerospace fly-away rail guide]
* Planning tip-to-tip fin reinforcement (still thinking but leaning towards fiberglass rather than carbon fiber)
* Tip-to-tip fiberglass fin reinforcement


<center>
<gallery mode="slideshow">
[[File:Peregrine-openrocket.png|800px|alt="Screen shot of Peregrine design in OpenRocket"]]
File:Peregrine-launch.png|Peregrine launch, seen from pad camera.|alt=A rocket leaving pad 86 at Argonia with a bright white exhaust and a large plume of white smoke. A fly-away rail guide can be seen detaching from the rocket.
</center>
File:Peregrine-openrocket.png|Peregrine design in OpenRocket.|alt=Screenshot of OpenRocket showing a basic design for a 3 inch minimum diameter rocket with 4 fins.
File:Peregrine-fin-tack.jpg|Initial attachment of fins with fillets.|alt=White fiberglass fins attached to a red fiberglass body tube, with black (ProLine) fillets.
File:Peregrine-fin-tack-2.jpg|The fins' "footprint" on the tube.|alt=From the inside of the body tube, showing the footprint of the fillets showing through.
File:Peregrine-fabric.jpg|Cutting fabric for the tip-to-tip layup.|alt=A paper fin template next to a piece of fiberglass fabric cut to the same shape.
File:Peregrine-water-break.jpg|Doing a water-break test to show when the surface was rough enough for layup.|alt=Two photos of a drop of water on one of the fiberglass fins. In the top photo, the water is beaded up into a taller, rounder drop; in the bottom, the water has spread out showing that the surface is rough enough to break the water's surface tension.
File:Peregrine-layup-jig.jpg|Fin jig constructed for the layup.|alt=The Peregrine rocket in a plastic and wood fin jig, with the fins resting on wood planks wrapped with wax paper.
File:Peregrine-layup-1.jpg|First layup; bags of water are used to press down on the peel ply.|alt=Same setup as the previous photo, with gallon ziploc bags of water on top of the fins.
File:Peregrine-layup-2.jpg|First layup after curing.|alt=Fins with cured fiberglass tip-to-tip layup.
File:Peregrine-layup-3.jpg|Layup after trimming; adhesion was poor in spots, as shown.|alt=Closeup of the layup on a fin showing that the fabric was not pressed down fully to the surface.
File:Peregrine-sled-1.jpg|"Back" side of sled with the TeleMega, EasyMini and pin switches.|alt=TeleMega and EasyMini boards attached to a 3D printed sled and partially wired.
File:Peregrine-sled-2.jpg|"Front" side of sled with the RunCam and two LiPo batteries.|alt=An orange action camera and two LiPo batteries attached to the other side of the sled.
File:Peregrine-coupler.jpg|The sled inside the coupler, showing the port hole for the camera.|alt=A red fiberglass coupler with a circular hole in the switch band, behind which is the lens of the camera previously shown.
File:Peregrine-sled-3.jpg|The sled with completed wiring and lexan antenna support.|alt=The sled previously shown, with additional wiring and the TeleGPS antenna taped down to a piece of clear plastic with red electrical tape.
File:Peregrine-paint.jpg|Painted.|alt=The rocket painted gray with a yellow nose cone.
File:Peregrine-graphics.jpg|Graphics applied.|alt=The rocket with yellow letters spelling "peregrine" in all caps, and yellow stripes on the fins.
File:Peregrine-on-pad.jpg|On the pad, waiting for a break in the clouds.|alt=Peregrine on launch pad with a large "86" sign behind it. The sky is partly cloudy.
</gallery>


Completed Tasks:
* Preliminary OpenRocket and RasAero sims
* Preliminary fin flutter calculations
* Motor retainer bonded into airframe
* Switchband bonded to coupler
* Fin jig 3D printed
* Fins tacked on
* Fillets in progress
<center>
[[File:Peregrine-fins.jpg|400px|alt="Screen shot of Peregrine design in OpenRocket"]]
</center>


[[Category:Rockets]]
[[Category:Rockets]]

Revision as of 09:56, 19 November 2025

Possible paint scheme.

Peregrine is built from a Wildman Mach 3 kit (75mm minimum diameter) and am planning for a launch at Airfest 2024. The flight will be on an AeroTech M685 motor and should exceed 30,000 feet AGL (preliminary simulations are showing 34k-35k). Construction took place between February and August 2024.

  • A rocket leaving pad 86 at Argonia with a bright white exhaust and a large plume of white smoke. A fly-away rail guide can be seen detaching from the rocket.
    Peregrine launch, seen from pad camera.
  • Screenshot of OpenRocket showing a basic design for a 3 inch minimum diameter rocket with 4 fins.
    Peregrine design in OpenRocket.
  • White fiberglass fins attached to a red fiberglass body tube, with black (ProLine) fillets.
    Initial attachment of fins with fillets.
  • From the inside of the body tube, showing the footprint of the fillets showing through.
    The fins' "footprint" on the tube.
  • A paper fin template next to a piece of fiberglass fabric cut to the same shape.
    Cutting fabric for the tip-to-tip layup.
  • Two photos of a drop of water on one of the fiberglass fins. In the top photo, the water is beaded up into a taller, rounder drop; in the bottom, the water has spread out showing that the surface is rough enough to break the water's surface tension.
    Doing a water-break test to show when the surface was rough enough for layup.
  • The Peregrine rocket in a plastic and wood fin jig, with the fins resting on wood planks wrapped with wax paper.
    Fin jig constructed for the layup.
  • Same setup as the previous photo, with gallon ziploc bags of water on top of the fins.
    First layup; bags of water are used to press down on the peel ply.
  • Fins with cured fiberglass tip-to-tip layup.
    First layup after curing.
  • Closeup of the layup on a fin showing that the fabric was not pressed down fully to the surface.
    Layup after trimming; adhesion was poor in spots, as shown.
  • TeleMega and EasyMini boards attached to a 3D printed sled and partially wired.
    "Back" side of sled with the TeleMega, EasyMini and pin switches.
  • An orange action camera and two LiPo batteries attached to the other side of the sled.
    "Front" side of sled with the RunCam and two LiPo batteries.
  • A red fiberglass coupler with a circular hole in the switch band, behind which is the lens of the camera previously shown.
    The sled inside the coupler, showing the port hole for the camera.
  • The sled previously shown, with additional wiring and the TeleGPS antenna taped down to a piece of clear plastic with red electrical tape.
    The sled with completed wiring and lexan antenna support.
  • The rocket painted gray with a yellow nose cone.
    Painted.
  • The rocket with yellow letters spelling "peregrine" in all caps, and yellow stripes on the fins.
    Graphics applied.
  • Peregrine on launch pad with a large "86" sign behind it. The sky is partly cloudy.
    On the pad, waiting for a break in the clouds.
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