2023-10-07 PEGASUS spin-up

Owned by Anthony Luo, created
Last updated: 2023-10-07 by Hardy Yu
3 min read

Make sure to update the Title following the format “Jan 01, 2020 Flight Test”

 Flight Preparation

Requested by:

@Anthony Luo

Required Sub-team integration efforts

Mech
Electrical
EFS
Autonomy
Operations

Date of Request

Jan 25, 2023

Location and Time

E7 1401

Goal Summary

Full Spinup of pegasus

Approved?

Yes

DO NOT HOVER TEST. STRAPPED DOWN ONLY.

 Mandatory Attendees

Name

Phone #

Role

Reason

Name

Phone #

Role

Reason

 @Daniel Puratich

 

Flight Test Lead

  • Creating documentation

  • Booking the test flight

  • Creating a thread in #flight-staging

 @Hardy Yu

 

 Pilot in Command

  • Aircraft preparation

  • Filling out documentation

 

 

Safety

  • Making sure everyone is safe

  • Bringing Med kit

 

 

(Subsystems integration, Secondary pilot, etc)

 

 Auxilliary Attendees

Name

Role

Name

Role

@Yuchen Lin @Jerry Tian bootcamper: Hanwu, and one more uhh forgot his name

 

 

 

Goals/Objectives

Objective

ALL PROGRAMS RUN IN ACRO

Priority

Owner(s)

Objective

ALL PROGRAMS RUN IN ACRO

Priority

Owner(s)

0-25-0 ramp

  • Ensures that throttle is working, arm-disarm working.

 

 

0-50-0 Step

  • Step from 0 to 50% throttle, back to 0.

  • Checking for motor desyncs

 

 

0-100-0 Step

  • Step input from 0-100% throttle, back to 0 after spun up.

  • Checking for motor desyncs

  • Checking for power monitoring brownouts

  • knockoff criteria:-

    • Current draw exceeding 100A

    • Motor on-time exceeding 10 seconds

    • Props loose

    • issues / alarming observations. Re-asses and continue if safe

 

 

0-100-hold 5 seconds-0

  • Ensures that our system can sustain 100% throttle for 5 seconds.

  • Knockoff Criteria:

    • Current draw > 100A

    • Motor on-time ecxeeding 10 seconds

    • props loose or airframe compromised.

    • Issues/alarming observations

 

 

sine wave ramping

  • mostly just a vibe test. Ensures that everything on our drone will survive a flight test with vibrations and potential resonance frequencies.

  • Logs (hopefully) analyzed.

 

 

Flight Test Timeline

Date/Time

Action

Date/Time

Action

0X00

Briefing @ WARG Bay

0X00

Arrival at Flight Test Location

0X00

Flight Test Operation #1…… (eg: Capturing data, tuning, etc)

 

Flight Test Operation #2

 

Flight Test Operation #…….N

0X00

Debrief

 

 

 

 

Incident Procedures

Incident

Location

Procedure

Incident

Location

Procedure

Fire

 

  • Designate 911 contact

    • Describe incident (Lipo Fire on East side of E7, first floor Room 1401. Look for PERSON)

  • If small fire → fire extinguisher and attempt to contain. Power off if safe to do so.

  • If large fire → evacuate and call authorities

  • Call safety office asap

Injury

 

  • Apply first aid as required.

Property Damage

 

  • E-mail graeme with an explanation

Week-Before To-Do List

SME Signoff

Structures
Fasteners Secure
Motors secure
Props secure (or instructions clear)
Props clear (no chips)
Harnessing
No exposed contacts possible of shorting
no loose cables
Nothing tight / pulling
power-up and motor-test completed
No harsh edges that could potentially tear through wires
Controls
Pixhawk initial parameters configured
RFD900 telemetry configured
TBS Tracer Configured
GPS configured
Initial sensor calibration completed
SD Card in drone, logging enabled
Groundstation
Mission Planner Setup
RFD900 tower ready
RC Controller channels, modes mapped and bound

System Testing Procedures

Day-Before To-Do List

Batteries

Test Procedures

Pre-Spin-up Safety Checklist

Post-Flight Checklist

Item

Owner

Item

Owner

ALL MEMBERS PRESENT

 

 

Flight Test Debrief

Flight Test Timeline

Step up:

  • This morning, we found out the Tbs nano receiver(white) that was originally placed on the drone might be broken (not status light with power). We replaced it with the receiver from Houston.

  • Radio Control, accelerometer, and compass calibrated for Pegasus by mission planner

  • No telemetry connection while testing, only radio control

  • ratchet strap fixed the drone on the table of E7 1401

Observation:

  • After arming, the props spin up on their own. The airframe vibrates slightly under the initial low throttle. The vibration could be caused due to the landing gear connection and the flexibility of the arms. Not a big issue in my opinion since the airframe restores a stable state after giving the motor some throttle, and it fixes itself.

  • No obvious problem was noticed as the throttle slowly went from 0 - 50% and went back.

  • No obvious problem as the throttle quickly went to 100% and stopped.

  • Didn’t check throttle stays on 100% for 5 seconds or sine wave ramp

Analytics (hopefully applicable)

Flight Test Post Mortem // Final Thoughts // Condensed Summary

RCA for Red Items

Create a RCA and keep it as a child page.

 

Action Items

Other Resources

Booking WRESTRC Field

WRESTRC