2021TÜRKSAT MODEL SATELLITE — CRITICAL DESIGN REVIEW

Autogyro descent

A 199-page critical design review for a rocket-deployed model satellite that slows its own fall. After separating at 400 m, the payload switches from parachute to an autogyro rotor, holds altitude for ten seconds at 200 m under PID control, and marks its position with a pyrotechnic smoke capsule.

TEAM TALIA AEROSPACE · TEAM #37032 · FATIH SULTAN MEHMET VAKIF UNIVERSITY · 2021 · ROLE: TEAM LEAD & OPERATIONS CONTROL

FIG 01MISSION PROFILE
700 M400 M200 MGROUND1DEPLOYMENTFROM ROCKET @ 700 M2SEPARATION@ 400 M · SMOKE3HOVER10 S @ 200 M4LANDINGBUZZER + GPSPARACHUTE — 10–14 M/SSMOKE CAPSULEAUTOGYRO ROTOR — 8–10 M/SCARRIER FALLS SEPARATELYTELEMETRY 1 HZ
DEPLOYMENT @700 M → SEPARATION @400 M → HOVER @200 M → LANDINGSWIPE →

PRIMARY MISSION

  • Deploy from the rocket at 700 m
  • Autonomous separation at 400 m
  • Active descent on the autogyro system — 8–10 m/s
  • Real-time telemetry at 1 Hz

BONUS MISSION

  • Hold ~200 m for 10 seconds
  • Maintain altitude under PID control
  • Resume descent after the timeout
  • Visual tracking via the smoke capsule
TAB 01REVIEW AT A GLANCE

199

CDR PAGES

30+

TEAM MEMBERS LED

1 Hz

TELEMETRY RATE

100%

REQUIREMENTS MET

TAB 02SUBSYSTEM HIGHLIGHTS

SENSING

  • MPU9250 — 9-axis MEMS for pitch, roll and yaw
  • NEO M8N GPS with compass for recovery
  • BMP280 barometer — better than 0.1 m altitude resolution

ACTIVE LANDING

  • Single BLDC motor driving counter-rotating props
  • 30 A ESC, PID altitude hold
  • Autogyro rotor takes over from the parachute after separation

AVIONICS & COMMS

  • Arduino Nano flight controller
  • ESP32-CAM for WiFi link and live video
  • 1 Hz telemetry, ~1500 m range, SD-card logging
FIG 02FLIGHT SOFTWARE STATE MACHINE
YERDEYÜKSELİŞAYRILMAAKTİF İNİŞSABİTİNİŞBİTİŞEEPROM-PERSISTED · SURVIVES POWER LOSS · MANUAL OVERRIDE (KOMUT)
AUTONOMOUS PHASE SEQUENCINGSWIPE →
TAB 03TEAM TALIA AEROSPACE

ALI DEREYURT

Team lead · operations control

NAGKICHAN MOUSTAFA IMPRAM

Software lead

FATMA SEMİHA ÜNAL

Electronics · communications

ERVANUR MIDILLI

Integration · ground station

ABDULLAH SELİM KÖKSAL

Support engineer

TEAM MEMBER

Mechanical · analysis

FATIH SULTAN MEHMET VAKIF UNIVERSITY · TEAM ID 37032 · 199 PAGES · 7.7 MB · V1.0