Differences between revisions 5 and 6
⇤ ← Revision 5 as of 2017-04-03 08:15:53 →
Size: 3052
Editor: KeithLofstrom
Comment:
← Revision 6 as of 2017-04-03 08:16:13 → ⇥
Size: 3052
Editor: KeithLofstrom
Comment:
Deletions are marked like this. Additions are marked like this.
Line 57: Line 57:
|| Climb ||<-3> Altitude (km) ||<-3> Velocity (m/s) ||<-3> Time (sec) ||<-3> Drag Force ||<-3> Power ||<- Force   || || Climb ||<-3> Altitude (km) ||<-3> Velocity (m/s) ||<-3> Time (sec) ||<-3> Drag Force ||<-3> Power ||<-3> Force ||

Summary

MoreLater

Earth

  • 6378 km Earth Equatorial Radius
  • 398600.44 km³/s² gravitational parameter
  • 86164.09 second rotation period
  • 7.2921e-5 radians per second

Loop acceleration track

  • 5° south
  • 100 km launch track height
  • 70 km return track height
  • 14 km/s surface-relative rotor speed at altitude
  • 3 kg/m rotor mass density
  • 6353 km surface rotational radius at 5°S, 463.3 m/s rotational velocity
  • 6453 km launch track rotational radius, 470.6 m/s rotational velocity, 9.499 m/s² gee force
  • 6423 km return track rotational radius, 468.4 m/s rotational velocity, 9.587 m/s² gee force

Forward track at 100 km

  • 14000.0 m/s surface relative rotor speed
  • 14470.6 m/s inertial frame rotor speed
  • rotor density 3.0000 kg/m
  • deflection force 588.0 MN per slope fraction, 10.26 MN per degree
  • 32.45 m/s² rotor centrifugal acceleration
  • 3.4 centifugal-to-gravity ratio
  • 2.4 track to rotor "weight" ratio, including stabilization cables
  • 7.2 kg/m track mass plus stabilization cable mass+tension
    • note: cables descend towards 9.8 m/s² surface gravity
  • Std. Atmosphere pressure 5.2209 Pa, density 8.2829e-5 kg/m³, temperature 219.6K -53.6 ℃

Return track at 70 km

  • 14020.3 m/s surface relative rotor speed (faster due to 30 km descent)
  • rotor density 2.9957 kg/m ("Bernoulli stretch" for constant mass flow rate relative to surface)
  • deflection force 588.9 MN per slope fraction, 10.28 MN per degree
  • 13551.9 m/s inertial frame rotor speed
  • 28.59 m/s² rotor centrifugal acceleration
  • 3.0 centifugal-to-gravity ratio
  • 2.0 track to rotor "weight" ratio, including stabilization cables
  • 6.0 kg/m track mass plus stabilization cable mass+tension
  • Std. Atmosphere pressure 3.201e-2 Pa, density 5.604e-7 kg/m³, temperature 195.1K -78.07 ℃

West Station Supported by Return Track at 70 km

  • incline slope 0.18
  • deflection force 106 MN

West Station Acoustic elevators

  • 40 MN (WAG) available for acoustic elevators
  • 80 km (WAG) filled Kevlar support length
  • 2.4 (WAG) taper ratio over 70 km
  • 6000 kg climbers + payloadCD*A
  • assume CD*A = 1 m², drag force = ρ*CD*A*V²

Climb

Altitude (km)

Velocity (m/s)

Time (sec)

Drag Force

Power

Force

Regime

Start

End

Avg.

Start

End

Avg.

Start

End

Avg.

Start

End

Avg.

Start

End

Avg.

Start

End

Avg.

Jerk

Accel

Summary (last edited 2017-04-03 08:16:13 by KeithLofstrom)