Bro, reading above doesn’t make sense.
You are showing CRDE details and talking about scramjet.
Then you are talking about hypersonic and ballistic missiles.
Can you please explain in depth what you mean?
Ballistic missiles like Bora, Tayfun reach hyoersonic speeds during their flights. (Mainly in midcourse)
Yet ICBMs are hyoersonic all the way.
Where as a Bora may hit target with 1.5 Mach , an ICBM may hit target with 8-10 Mach.
Bora may fly hypersonic for a very short time. Yet Tayfun B4 may fly most of its trajectory in hypersonic speed. But still hit target at high supersonic.
The image shows a cruise speed of 1500-2500 m/sec. This falls between the high supersonic and hypersonic ranges. I'm guessing the ballistic missile ignites its scramjet engine in the second stage after reaching an altitude of 50 km+. We don't have the power to launch an HGV like the Russians, which dives from a Sarmat ICBM. We don't have any ballistic missiles with such a long range. Therefore, it makes more sense to launch into space with a conventional engine and handle the remaining critical phase with a scramjet engine. Furthermore, hybrid rocket technology can't carry twice the payload of an average ballistic missile.
WHAT IS A RDE?
A Rotating Detonation Engine (RDE) is essentially a more compact and efficient method of creating thrust for a wide variety of military relevant systems. These mechanically simple engines have no moving parts making them less complex than gas turbine engines and therefore potentially lower cost and simpler to manufacture.
RDEs rapidly burn fuel via a supersonically travelling detonation wave; this in turn delivers high performance in a small volume.
This volume savings can be used to increase fuel and/or payload volume providing potential range, speed and affordability benefits compared to rockets, ramjets and gas-turbines.
This rapidly developing technology enables a wide range of military applications including air-to-ground, air-to-air and surface weapons. Building on sustained Air Force and Navy investment, current research is targeted at expeditiously transitioning truly disruptive effects to the warfighter.
It is possible to leverage a detonation wave in systems from ground power to turbine engines, ram/scramjets and rockets. Each of these systems, benefits from a reduced volume/mass and an increased performance.
The illustration to left and described below is for the simplest of applications a rotating detonation ramjet:
- Composed of 2 coaxial cylinders with gap between
- Fuel & oxidizer continuously flow into annular gap
- Detonation travels around annulus & burns mixture
- Delivering extremely compact heat release
- Increasing pressure and cycle efficiency without mechanically complex rotating machinery
- Products leave nozzle axially creating thrust
Military relevance of RDE ramjets is enhanced by:
- Simple design potential enables production at rates necessary for mass weapon employment
- High-speed detonation wave delivers continuous thrust and minimizes integration challenges
Air-to-ground weapons
- RDE powered weapons have the potential to provide a clear advantage to our military:
- Range, survivability, loadout and payload that enhances legacy platform utility in near peer fight
- High-speed standoff with better loadout and versatility
- Compatible on a wide range of platforms
- Price point that delivers affordable destruction of high-value, time-sensitive targets and mass effects
- Addresses SECAF air dominance, moving target engagement and long-range strike Operational Imperatives (OI)
WHY ARE RDE IMPORTANT TO WARFIGHTER?
As stated earlier, rotating detonation can be employed in a wide range of engine configurations including in ramjets, rockets and gas turbines. The discussion here will center on two applications of the RDE ramjet illustrated on page 1.
Both internally and externally carried munitions are constrained in overall dimension and launch mass by several factors including associated weapons platforms, ground handling equipment and logistical concerns.
The small volume for the RDE combustor allows critical volume to be applied to fuel and payload.
afresearchlab.com
This is how the US defines the technology we work with
