XRR-2 Rotary Rocket Orbital Test
by pandoraskitten
uploaded 2015-03-22
mod ship
#Helicopter #Rotary #Rocket #VTOL #B9
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A mod rocket called XRR-2 Rotary Rocket Orbital Test. Built with 254 of parts found by the side of the road, its root part is fuelTank4-2.

Built in the VAB in KSP version 0.90.0.

Please note you will need to install Ven’s Stock Part Revamp (http://forum.kerbalspaceprogram.com/threads/92764-90-Stock-Part-Revamp-Update-1-7-2!) if you want the craft to look exactly as pictured. Some adjustment may be necessary for aesthetics reasons if you’re using stock parts (parts affected are basic jet engines, Rockomax 48-7 rockets and OX-STAT solar panels.

This rotary rocket is a continuation of my previous design, the X-Wing which uses ideas from both the Roton ATV test flown by Rotary Rocket Company around the turn of the century, and the Focke-Wulf Triebflugel, which contributed the ‘thrust wing’ concept used on this craft.

Important keys and notes:

; and ‘ control Rotor Pitch (Important! Change pitch slowly to avoid rotor stalling)

5: Toggle Rotor-Tip Jets (Turn them off before you run out of IntakeAir!)

6: Toggle Aft Jets (Usable up to Mach 1.5 and 15,000m altitude only)

7: Toggle Rocket Engines (Target stable orbit from vertical ascent profile, 75,000m)

L: Landing Legs

Reserve Fuel Tanks: The small nacelles located above the rotor system contain LiquidFuel for post-reentry and landing use. In order to prevent premature fuel drain from reserve tanks, they are disabled at mission start. Activate only for fixed wing flight and landing to avoid accidental total fuel drain.

Should you run out of fuel, transition to tailsitter mode using the emergency parachutes beside the cockpit, and use the rotors at high pitch to autorotate to a safe landing.

The rotors allow VTOL functionality, allowing the craft to take off fully loaded above KSC and air-start its rocket engines above 6000m altitude. Once the rockets are ignited (or optionally transitioning to fixed wing flight), the rotors are feathered and the tip jets will contribute to forward thrust.

This Orbital Test configuration is to prove that the design can reach LKO at 80,000m. It is not intended to carry any payload besides the two Kerbonauts as the craft currently does not have a high enough fuel fraction to reach a stable orbit with significant payload. You may experiment with different ascent profiles (such as point to point sub-orbital) and use the fixed and VTOL flight capability to explore various landing sites for Kerbin survey contracts.

Re-entry should be made at a shallow angle. Above 35km altitude, the rotors can serve as airbrakes at 90 degree pitch but must be feathered before descending below 30km due to high dynamic pressure. You may attempt to transition to VTOL (tailsitter) mode at medium to low altitude by stalling the craft and using RCS to pitch the nose up vertical. Transition to vertical flight must be executed below 100m/s airspeed.

If you manage to attain tail-sitter attitude, the rotors can be used to decelerate the craft unpowered and the parachutes can be used for landing.

Alternatively, you may also activate the tip jets for powered flight and control your sink rate by way of rotor RPM and pitch for a 'guided’ landing.

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  • B9 Aerospace
  • FerramAerospaceResearch
  • HullCameraVDS
  • MagicSmokeIndustries
  • ProceduralFairings
  • Squad (stock)
  • TweakScale
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  • Type: VAB
  • Class: ship
  • Part Count: 254
  • Mods: 7
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