JaeSan's Aeronautics: 11월 2019

Previous Work Status

Initial Version of Missile-SIM for Performance evaluation
Aerodynamic Validation of Missile-SIM for Trajectory
AIM-120C Study using Missile-SIM : Part 1 - Sensitivity
AIM-120C Study using Missile-SIM : Part 2 - Launch Condition
AIM-120C Study using Missile-SIM : Part 2 - Launch Condition - revision
Patch note of Missile-SIM : Guidance Algorithm is added w/ Real-Time plot
W.I.P status of Missile-SIM : Addition of Air-propulsion part 1
W.I.P status of Missile-SIM : Addition of Air-propulsion part 2
AIM-120C Study using Missile-SIM : Part 3 - CUDA / LREW / METEOR types. 1 : Baseline Comparison
AIM-120C Study using Missile-SIM : Part 3 - CUDA / LREW / METEOR types. 2 : Sensitivity Analysis
AIM-120C Study using Missile-SIM : Part 3 - CUDA / LREW / METEOR types. 3 : Few mentions
W.I.P status of Missile-SIM : Addition of 3D Coordinate
W.I.P status of Missile-SIM : Development of Few generic bodies for Further Missile-SIM
Missile-SIM : Performance Evaluation for ATACMS class missile
Missile-SIM : Performance Evaluation for KM-SAM class missile
Missile-SIM : Effectiveness of Rocket motor for free-fall bomb

1. Modeling of Iskander / Kh-47M2 & ATACMS + Booster - OUTDATED

Geometry related to aerodynamics Iskander and its modeling is shown below.

- This article is outdated; New Ballistics Analysis based on this CFD result is here

https://jaesan-aero.blogspot.com/2022/03/few-ballistic-missile-analysis-w_19.html

Except booster part, ATACMS part is same as the previous model
(Missile-SIM : Performance Evaluation for ATACMS class missile)

2. Trajectory Simulation of the Iskander / Kinzhal and ATACMS w/ Booster

Based on the modeled missile, I simulated a few trajectory options using Missile-SIM.

1) Normal version of Iskander (~170km)

It has normal short range ballistic missile characteristics; peak altitude is about 40km w/ <M5 burn out velocity.

2) Iskander-M (~250km)

Bigger ISP, slightly larger amount of propellant and better trajectory gives significantly better range than the normal version.

3) Iskander-M (~350km)

The projectile after burning whole fuel has less drag at the high altitude. Indeed if the missile glide less deeper angle, range could be extended.

4) Iskander-M (~500km)

Its maximum range is about 500km. Iskander-M missile could cover the entire Korean peninsula.

5) Iskander-M as Kinzhal = Air-launched Iskander from MiG-31 (~170km)

If the Iskander-M were launched at 40,000ft w/ M1.3, range is increased about 1,000km class. Because missile enter the 'almost-no-drag' altitude, missile has much higher burn-out velocity and longer range.

6) ATACMS+Booster (~500km)

If we given the ATACMS booster, range become similar to that of Iskander-M. (However, ATACMS has smaller warhead weight than that of Iskander-M)

7) Air-Launched ATACMS+Booster

JTACMS in the previous article (Missile-SIM : Performance Evaluation for ATACMS class missile) shows about 250km class range.

If we attached booster for JTACMS, what happens?

Similar to Iskander-M, it could extend its range for more than 1,000km.

3. Conclusion

Boosted ATACMS and Iskander-M model are compared for ground and air-launched version. Both missiles having several hundred kilometer range could have extended range using air-launched method.

I also tested hypersonic glider or three-stage rocket however, these have almost infinite range as intercontinental weapon. Indeed, I decided not to study seriously about them (as shown below)

From now on, I will focus on the upgrade of Missile-SIM as Flight-SIM for more advanced vehicle
(Supersonic Civil Aviation Area)

Appendix : Hypersonic Glider case (Almost act like a LEO projectile)