Flight Log - 2022-07-26 - John Simmons's (BAR-05) F-79 Lonewolf

This scratch build / scratch designed rocket was inspired by the USAF Thunderbird Jets and the F-35 Lightening.

It features dual canted 24mm motors and dual rear-eject parachutes that eject from the side pods.

There are no 3d printed parts, everything is old school paper body tubes and wood.

Decals were designed in CAD and printed at our home.  

The "Thunderbird" on the belly was masked and spray painted.

Link to build thread: Lakeroadster's F-79 Lone Wolf | The Rocketry Forum

 

 

 

Flight Date: 2022-07-26
Rocket Name: (BAR-05) F-79 Lonewolf
Flyer's Name: John Simmons
Motors: 2xD12-3
Expected Altitude: 299.00 Feet
Wind Speed: 5.00 mph
Launch Site: Local
Actual Altitude: 411.00 Feet

This is the 2nd flight for the F-79.

First launch was 07-08-2022: Flight was stable but the plastic parachute shredded away from the shroud lines.

This flight uses a pair of D12-3 motors (instead of two D12-5's) and I made new 18" parachutes that have the shroud lines going up over the top of the chute, no chance of the shroud lines detaching from the plastic chute.

Ignition was quick due to the e-matches and both motors ignited.

The rocket accelerated quickly, plenty of speed at launch rod exit (29.5 mph per sim).

Winds were less than 5 mph and from the west. The rocket did not weathercock.

The rocket was stable during thrust and coast phase.

The simulation software estimated apogee @ 411 feet, and the rocket appeared to reach that (no altimeter was used).

The rocket arced over at apogee and the ejection charge deployed the chutes.

Only one of the two chutes billowed but it was enough to slow the rocket for a safe recovery.

As luck would have it the rocket landed on the hard paved runway. Photo's were taken of the rocket at it's ground hit location. Upon further review the rocket was undamaged except for some road rash from the asphalt.

What was learned from this flight?

Using two parachutes is a cool visual, but I haven't been able to get both to blossom, just one blossomed.

StageMotor(s)
12 x Estes D12-3

 

comment Post a Comment