MYT Engine Comparative Analysis 2012

Land Warfare Conference 2012 Melbourne Oct/Nov 2012

The Massive-yet-Tiny Engine: A comparison of OEM claims

LTCOL BRETT LABOO Senior Military Officer, DSTO

ABSTRACT Firepower, mobility and protection have not been the sole considerations for modern military platforms for some time now. Auxiliary power generation for an ever increasing range of integrated systems required for the effective and adaptive conduct of network enabled warfare in a connected yet expansive battle space is an additional prime consideration. So too are the through life costs together with the logistic burden for its operation.

In order to effectively address these considerations holistically and systematically a new or greatly improved technology is required.

The scope of this work is to compare some COTS/MOTS power packs with a selected new break-through technology for internal-combustion piston enginesthe Massive-yet-Tiny (MyT) engine [1] using only Original Equipment Manufacture (OEM) product specification data. The engines are compared on several criteria, dry weight (kg), gross volume (m), claimed max power output, both (kW) and torque (Nm), specific power (kW/kg) and gross power density (MW/m). Procurement costs and fuel consumption (l/hr) are not considered as they are not universally listed in the OEM product specification literature or websites. Additionally the technology of the MyT engine is described along with an outline of some research and development issues. Finally a number of applications for the MyT engine are discussed briefly.

The MyT engine clearly outperforms and outclasses all of the COTS/MOTS power packs considered. The 14 MyT engine weighing 68 kg, occupying 0.035 m and with a claimed output of 2238 kW has a minimum specific power of 32.91 kW/kg and a power density of 63.156 MW/m.[2]

The levels of internal-combustion piston engine efficiency, specific power and power density for the current Australian Defence Force (ADF) inventory are clearly sub-par in comparison to the MyT engine. Notwithstanding any other benefits, there is no valid or logical justification for the Australian Defence Organisation (ADO) to ignore the MyT engine any longer. As a matter of priority the MyT engine needs to be investigated to ratify the claims and verify its reliability so that its output characteristics and general dimensions may be the default essential specifications for power packs across multiple platforms in either block upgrades or initial acquisitions. The Australian Defence Industry has a brilliant opportunity to pre-empt the ADF in the uptake of this technological black swan [3] to the mutual benefit of all parties.

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1. Introduction

Firepower, mobility and protection have not been the sole considerations for modern military platforms for some time now. Auxiliary power generation for an ever increasing range of integrated systems required for the effective and adaptive conduct of network enabled warfare in a connected yet expansive battle space is an additional prime consideration. So too are the through life costs together with the logistic burden for its operation. A whole range of considerations are depicted graphically in a diagram referred to as Quinns Quilt [4], at annex A.

In order to effectively address the power related considerations holistically and systematically a new or greatly improved technology is required.

1.1 Scope of Work

The scope of this work is to compare some COTS/MOTS power packs with a selected new break-through technology for internal-combustion piston enginesMyT engine using only open source / publically available OEM product specification data. The engines are compared on several criteria, dry weight (kg), gross volume (m), claimed max power output, both (kW) and torque (Nm), specific power (kW/kg) and gross power density (MW/m). Gross power density is reported in MW/m so as not to potentially confuse a common metric of kW/l which uses engine capacity. Engine capacity is not considered as it is of limited utility for a comparative analysis of turbine and piston engines. Procurement costs and fuel consumption (l/hr) are not considered as they are not universally listed in the OEM product specification literature or websites.

Additionally the technology of the MyT engine is described along with an outline of some research and development issues.

Finally a number of applications for the MyT engine are discussed briefly. It is expected that a reader knowledgeable in the field would identify many additional applicationsand that is encouraged.

1.2 General History

The MyT engine has been known in the public domain for almost a decade now. In 2005 it was entered in the NASA Create The Future Contest in the Automotive Category. Not only did it win that category, it was judged as the best entry from all categories that year. [5]. It was publicly displayed at the both the 2005 SEMA Show [6] and the 2006 Los Angeles Auto Show. [7]

The prototype of the 14 MyT engine weighs only 68 kg, occupies 0.035 m and has a claimed output of 2238 kW. [8] This means that it has a specific power of 32.91 kW/kg and a power density of 63.156 MW/m. Other form-factors include a 6 diameter version. [9]

2. Description

Unlike other internal combustion piston engines, the MyT engine pistons do not reciprocate. Moreover they move around the toroidal bore in a staccato motion, mechanically controlled by a gear and crank assembly. There are eight double-headed pistons separately linked into two sets of four permanently fixed and equally spaced interleaved rotors. [10, 11]

2.1 Pistons and Gears

A general approximation of the MyT piston could be conceptualised as the joining of two regular pistons back to back which have been cut through in the vicinity of the oil ring. Thus there are no piston skirts and therefore friction losses are minimised. So too are the inertial losses because of the continuous unidirectional motion. The two

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Land Warfare Conference 2012 Melbourne October 2012

interleaved rotors are driven by a very remarkable and inventive sun and planetary gear arrangement. In the basic configuration, one set of gears drives one set of eight pistons i.e. the two rotors. However, the next logical step in the development of the MyT engine is to have the gears drive two sets of eight pistons, i.e. two toroidal bores, one at each end of the crank shaft, astride the centrally mounted gears. [12, 13]

2.2 Internal Motion

As the planetary gears rotate around the sun gear the offset linkage point traces out a cycloid. The planetary gears are permanently linked to be exactly out of phase with each other. Thus when one rotor is moving the other is stationary and visa versa. This is the origin of the staccato motion. The MyT engine uses ports for both intake and exhaust and as in normal internal combustion piston engines the ports are opened and closed as the pistons transit past them. In the default configuration the MyT engine is naturally aspirated, yet a logical and rational development path would include various forms of forced induction. The lack of a valve train reduces the parasitic losses incurred by other four stroke internal combustion engines. There are two sets of each type of port and for every two rotations of the crank there are 32 power strokes. In a V8 engine there are just eight in the same 720. [14, 15] The relative motion of the two rotors and gear mechanism is depicted in a spread sheet animation of a stylised model published by the OEM. [16]

2.3 Other Characteristics

There are several other novel features of the MyT engine that are of note. Given the external diameter of the toroidal bore is about 13, that makes the stroke length roughly 8 which is remarkably long albeit in an arc. Due to the utilisation of the

sun and planetary gearing the dwell time at the equivalent of top dead centre is in the order of 12 of crank rotation. This exceptionally long period not only permits but virtually assures almost complete combustion and maximises the transfer of heat into kinetic energy. Hence the only cooling required is that resulting from the incoming charge and conventional fins on the exterior of the engine. Furthermore, the compression ration is variableit ranges from 25:1 up to about 60:1, thus permitting the use of an unusually diverse range of fuels. And, regardless of fuel type consumed it is expected that it would be very efficient. [17, 18, 19]

2.4 Driven versus Driving

Not only can the MyT engine operate as an internal combustion engine, but due to its inherent design it can operate very well as a driven device. Although these modalities have not yet been fully explored, initial investigations indicate that the MyT engine shows as much promise in them as it does when operating as an internal combustion engine. The driven modes are somewhat similar. First, when used as a compressor or pump it will deliver both high fluid volumes at high pressure from the one stage. Secondly, it can operate as an air driven motor delivering high torque at low rpm from minimal inputs. [20, 21, 22]

2.5 Development Issues

Taken at face value, the claims of the MyT engine seem extraordinary. Thus as part of any rational development programme they and other issues must be successfully addressed in order fully realise and capitalise on this technological advance. Such high power outputs [23] necessarily imply that there would be extreme internal stresses, and pressures. Logically this leads to questions about high strength materials, reliability and maintainability (RAM) and fuel consumption etc.

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There are many areas to investigate to further develop the MyT engine. As at quarter two of 2012 it is estimated that the MyT engine is at Technology Readiness Level (TRL) [24] of around 4 5 [25]. For it to be considered viable option for use in the platforms operated by ADO it would need to be brought TRL 8 9.

In doing that, some topics to consider in the development process could include the utilisation of the CSIRO TiRO additive manufacturing process for Titanium machine parts which would deliver a wide range of benefits. [26] What are other suitable production methods casting, injection moulding, or billet machining. Independent RAM analysis and profiling is essentialespecially if the MyT engine was to be certified for use in aeronautical applications. How can multiple toroidal bores and daisy chaining be configured for even more power. Both miniaturisation and up-scaling are required for extending the range of applications. Investigation of acoustic, thermal and chemical signatures of the MyT engine would also assist in its uptake in the market placeespecially if it conferred significant benefits with respect to emission control legislation. This field of investigation may naturally extend into exploring and optimising ignition systems and port aerodynamics for various fuel types and induction modes. What sort of output (and engine life) is possible if the 14 MyT engine was build with two toroidal bores fitted with a supercharger and fuelled with nitro-methane?

Obviously, much work must be completed before the MyT engine can be assessed as TRL 8 9. It is expected that there is significant potential opportunity for members of the Australian Defence Industry to participate in the development of the MyT engine to the benefit of both themselves and the ADO.

2.6 Description Summary

The MyT engine is a highly compact device with a considerably large output and a minimum of moving parts. This is achieved through the maximisation of dwell time, stroke length and compression ratio combined with the minimisation of both parasitic and friction losses along with reducing inertial stresses. Figure 1, below, is a stylised graphical representation of the MyT engine with the engine body removed.

Figure 1: Graphic of MyT internals

3. Initial Comparisons

To establish the class or classes in which the MyT engine can be grouped for comparative analysis, both the 14 version and the 6 version are compared with 60 other military or defence related engines listed in table 1, below. These comparisons are solely based on publicly available data, primarily from OEM product literature. Although endnotes for the tables and graphs are omitted due the large number of them, all source documents and/or websites are listed in the References section. The six comparisons used to establish a more specific class comparison for the MyT engine are, dry weight (kg), gross volume (m), claimed max power output, both (kW) and torque (Nm), specific power (kW/kg) and gross power density (MW/m). Gross power density is reported in MW/m so as

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not to potentially confuse a common metric of kW/l which uses engine capacity rather than gross external dimensions as used in this comparative analysis. Engine capacity is not considered as it is of limited utility for a comparative analysis of turbine and piston engines. Procurement costs and fuel consumption (l/hr) are not considered as they are not universally listed in the OEM product specification literature or websites.

Figures 2 7 show the graphs of each criterion for the six initial comparisons. Rather than use logarithmic plots, which are

not always easily understood, some of the data points are truncated for several entries so as to not skew the image and render the remainder of the graph of no use to the reader.

These truncations are noted at each instance, as are omitted data points due to the lack of some data in some of the OEM product specification literature or websites.

Table 1: The list of the 60 engines compared with the MyT Engine

Engine OEM Engine OEM (a) (b) (c) (d) Caterpillar C 4.4 Caterpillar Mercedes-Benz OM612

2.7L 5cly Mercedes-Benz

Caterpillar 3126E Caterpillar Mercedes-Benz OM642 3L V6

Mercedes-Benz

Caterpillar C 6.6 Caterpillar MTU Diesel Engine 4R 106 MTU Caterpillar C 7 Caterpillar MTU Diesel Engine 6R 107 MTU Caterpillar C 9 Caterpillar MTU Diesel Engine 6V

199 TE20 MTU

Caterpillar C-18 Caterpillar MTU 8V 199 TE20 MTU Caterpillar C-16 Caterpillar MTU 8V 199 TE21 MTU Caterpillar C32 ACERT Caterpillar MTU MT 881 Ka-500 MTU Lightweight Heavy Fuel Engine

Cosworth MTU 10V 890 MTU

ISBe 4 Cyl Euro 5 Truck Cummins MTU 16V M70 MTU ISBe 6 Cyl, 6.7l Euro 3 Cummins MTU MT 883 MTU ISBe 6 Cyl Euro 5 Truck Cummins Napier Lion II Napier & Son ISLe 6 Cyl Euro 5 Truck/Coach

Cummins Napier Sabre H-24 VA Napier & Son

V903 (Vee8) Cummins Perkins 1100 Series Perkins DH200A4/V4/R4 Delta Hawk Perkins 1200 Series Perkins Detroit Diesel 6V-53T Detroit Rolls-Royce Turbomeca

RTM322Roll Royce

FM/ALCO 251 F (8 cyl) Fairbanks Morse Schrick SR350i Schrick Power Stroke 7.3-liter V-8 Ford Schrick Hurricane DID 600 Schrick GE T700-710D General Electric Sea Tek 950Plus

Electronico BI-Turbo Sea Tek

Hatz 4L41C HATZ Steyr Motors M12 Steyr Motors Honeywell AGT-1500C Honeywell Steyr Motors M14 VTI Steyr Motors Honeywell 55-GA-714A Honeywell Steyr Motors SE286E40 Steyr Motors Isuzu 4BD1T Isuzu Steyr Motors M16 SCI Steyr Motors 3300 Aero Engine Jabiru Arrius 2B2 Turbomeca MP8 US07 485M Mack AR741-1101 UAV Engines Ltd MAN D0834 MAN AR801R UAV Engines Ltd MAN D2066 MAN D13-900 Volvo V12-1800 MAN Yanmar L48AE-DE Yanmar Marinediesel V8 Diesel Marinediesel Yanmar L70AE-DE Yanmar Martin Aircraft V4 engine Martin Jetpack MTR 390 Turbomeca Rolls-Royce

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Dry Weight

0

1000

2000

3000

4000

5000

Co

swor

th L

HF

E-

2 cy

l

Sch

rick

SR

350

i

AR

741

-11

01

MyT

6"

AR

80

1R

Hu

rric

an

e D

ID 6

00

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ma

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ma

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25

1 F

(8

cyl)

Engine

kg

Figure 2: A plot of dry weight

Note: The Fairbanks Morse FM/ALCO 251 F (8 cyl) weights almost 12 tonne.

Gross external engine volume

0.0

2.0

4.0

6.0

8.0

MyT

6"

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Figure 3: A plot of gross volume

Notes:

1. The Fairbanks Morse FM/ALCO 251 F (8 cyl) occupies in excess of 61 m. 2. No data was publicly available for the Cummins, Ford or Mercedes Benz engines. 3. The gross engine dimensions for the Cosworth LHFE- 2 cyl were inferred from the OEM website and the patents listed there-on.

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Power

0

1000

2000

3000

4000

Yan

mar

L48

AE

-DE

Yan

mar

L70

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MyT

14"

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ell 5

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14A

Engine

kW

Figure 4: A plot of maximum power

Torque

0

2000

4000

6000

8000

ST

EY

R M

OTO

RS

M1

2

110

3C-3

3

V4

(2- s

troke

)

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YR

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TO

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1T

Mer

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ruck

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Cat

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0

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Ya

nmar

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Sch

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1

Hu

rric

ane

DID

60

0

AR

801R

Ha

tz 4

L41C

MyT

6"

DH

200A

4/V

4/R

4

Na

pier

Lio

n II

Arr

ius

2B

2

MT

U 1

6V

M7

0

MT

R 3

90

FM

/AL

CO

251

F (8

cyl

)

GE

T7

00-7

10D

RTM

322

-01

/9A

Na

pie

r Sab

re H

-24

VA

Hon

eyw

ell

55-

GA

-714

A

Engine

Nm

Figure 5: A plot of maximum torque

Note: No torque figures were listed for the engines to the right of the MAN V12-1800.

121


Specific Power

0

5

10

15

20

25

30

35

FM

/AL

CO

251

F (

8 cy

l)Y

anm

ar

L48A

E-D

E

Ha

tz 4

L41

CY

anm

ar

L70A

E-D

E1

103

C-3

312

06E

-E70

TT

A

MT

U 1

6V M

70

Isuz

u 4B

D1

T

ST

EY

R M

OT

OR

S M

12

Ca

terp

illar

312

6E

MA

N D

083

4M

AN

D20

66

Cat

erpi

llar

C32

AC

ER

T6V

199

TE

20

Det

roit

Die

sel 6

V-5

3TIS

Be

4 C

yl E

uro

5 T

ruck

4R 1

06 T

D21

ISLe

6 C

yl E

uro

5 T

ruck

/Coa

chC

ate

rpill

ar

C 7

MP

8 U

S07

485

MD

13-

900

Cat

erpi

llar

C-1

8IS

Be

6 cy

l, 6.

7l E

uro

36

R1

06 T

D21

ISB

e 6

Cyl

Eur

o 5

Tru

ck

Cat

erp

illa

r C

4.4

V90

3 (V

ee8

)C

ater

pilla

r C

-16

Ca

terp

illa

r C

9

MT

U 8

V 1

99 T

E2

0C

ate

rpill

ar

C 6

.6M

TU

8V

199

TE

21

V12

-180

0

MT

U M

T 8

81

Ka-

500

Mer

ced

es-B

enz

OM

612

2.7

L 5c

lyS

TE

YR

MO

TO

RS

SE

286

E40

Po

wer

Str

oke

7.3-

liter

V-8

MT

U M

T 8

83

ST

EY

R M

OT

OR

S M

16 S

CI

950

Plu

sS

TE

YR

MO

TO

RS

M1

4 V

TI

Mer

ced

es-B

enz

OM

642

3L V

6N

apie

r Li

on II

VG

T50

0A

GT

-15

00C

mul

ti-fu

el t

urb

ine

DH

200A

4/V

4/R

433

00 A

ero

Eng

ine

MT

U 1

0V 8

90

Cos

wo

rth

LHF

E-

2 cy

lH

urr

ican

e D

ID 6

00

Nap

ier

Sab

re H

-24

VA

AR

801R

V4

(2-

stro

ke)

Sch

rick

SR

350

iA

R74

1-1

101

Arr

ius

2B2

MyT

6"

MT

R 3

90G

E T

700

-71

0DR

TM

322-

01/9

A

Hon

eyw

ell 5

5-G

A-7

14A

MyT

14"

Engine

kW / kg

Figure 6: A plot of specific power

Power Density

0

10

20

30

40

50

60

70

FM

/ALC

O 2

51 F

(8

cyl)

Ya

nmar

L4

8AE

-DE

Ya

nmar

L7

0AE

-DE

1206

E-E

70T

TA

Hat

z 4L

41C

1103

C-3

3M

TU

16V

M70

ST

EY

R M

OT

OR

S M

12N

api

er L

ion

II

MA

N D

0834

MA

N D

2066

Isu

zu 4

BD

1T

Cat

erp

illa

r 3

126E

Cat

erpi

llar

C32

AC

ER

TD

etr

oit

Die

sel 6

V-5

3T

D13

-900

Ca

terp

illar

C-1

6M

P8

US

07 4

85M

Cat

erp

illa

r C

76V

19

9 T

E20

ST

EY

R M

OT

OR

S M

14

VT

IC

ate

rpill

ar C

-18

4R 1

06

TD

216R

106

TD

21

Cat

erp

illa

r C

9S

TE

YR

MO

TO

RS

SE

286E

40

V12

-18

009

50 P

lus

ST

EY

R M

OT

OR

S M

16

SC

IM

TU

8V

199

TE

20

Co

swor

th L

HF

E-

2 cy

lC

ate

rpill

ar C

6.6

Ca

terp

illar

C 4

.4M

TU

8V

199

TE

21

Hu

rric

ane

DID

600

3300

Aer

o E

ngin

e

DH

200A

4/V

4/R

4V

GT

500

AG

T-1

500

C m

ulti

-fue

l tu

rbin

eN

apie

r S

abre

H-2

4 V

A

MT

U M

T 8

81 K

a-5

00S

chri

ck S

R3

50i

MT

U M

T 8

83A

rriu

s 2B

2

MT

U 1

0V

890

AR

741

-11

01

AR

801R

MT

R 3

90V

4 (2

- st

roke

)

RT

M32

2-01

/9A

GE

T70

0-71

0D

Hon

eyw

ell 5

5-G

A-7

14A

MyT

6"

MyT

14"

Mer

cede

s-B

enz

OM

612

2.7

L 5

cly

Me

rce

des-

Ben

z O

M64

2 3L

V6

ISB

e 4

Cyl

Eu

ro 5

Tru

ck

ISB

e 6

cyl,

6.7l

Eur

o 3

Po

we

r S

trok

e 7

.3-l

iter

V-8

ISB

e 6

Cyl

Eu

ro 5

Tru

ckIS

Le 6

Cyl

Eur

o 5

Tru

ck/C

oach

V9

03 (

Vee

8)Engine

MW / m

Figure 7: A plot of power density

Note: Power density can not be calculated for those engines with no volumes listed, i.e. the Cummins, Ford or Mercedes Benz engines.

3.1 Identification of Classes

From the figures above it is clearly evident that the MyT can be classified by a variety of means. Regardless of classification, it is plainly obvious that the MyT engine is grouped with the best of those in each of the comparison sets. However, the detailed class comparisons are progressed using just specific power and power density as the two primary metrics.

It is acknowledged that additional classes can be considered. The two selected metrics for establishing each class are the only two compound metrics. More information is conveyed through the use of the compound metrics.

The singular metrics are considered briefly after the detailed comparisons arising from the compound metrics.

122


4. Detailed Comparisons

The detailed comparisons examine the top 10 engines in both specific power and power density. The weight, gross volume, power and torque are compared for each of the top 10 engines for both classes.

4.1 Specific Power Class

The top 10 engines in terms of specific power as per figure 6, are listed in table 2, below.

Table 2: Specific Power: Top 10 Engines

Ser Engine SpecificPower

(kW / kg) (a) (b) (c)

1Martin Aircraft V4 engine

2.50

2 Schrick SR350i 2.55 3 AR741-1101 2.66 4 Arrius 2B2 3.83 5 MyT 6" 5.08 6 MTR 390 5.53 7 GE T700-710D 7.23

8Rolls-Royce Turbomeca RTM322

8.32

9Honeywell 55-GA-714A

10.08

10 MyT 14" 32.91

Interestingly, all of these engines, except for the MyT engines are for aircraft of some description and most are not piston engines. It is not until about a third of the way through the entire list in figure 6, above, that the first dedicated land platform application is rated, i.e. the MTR 10V 890 for the Puma. Thus the 14 MyT engine appears to outclass all engines in specific power, even the Honeywell engines for the M1 tank and the CH47 helicopter.

The detailed comparisons of these 10 engines across the four criteria are depicted in figures 8 11 below.

Dry Weight

0

100

200

300

400

Sch

rick

SR

350i

AR

741-

1101

MyT

6"

Mar

tin A

ircra

ft V

4 en

gine

MyT

14"

Arr

ius

2B2

MT

R 3

90

GE

T70

0-71

0D

Rol

ls-R

oyce

Tur

bom

eca

RT

M32

2

Hon

eyw

ell 5

5-G

A-7

14A

Engine

kg

Figure 8: Specific Power Top 10 Weight


0.0

0.2

0.3

0.5

0.6

MyT

6"

AR

741-

1101

Sch

rick

SR

350i

MyT

14"

Mar

tin A

ircra

ft V

4 en

gine

GE

T70

0-71

0D

Arr

ius

2B2

Hon

eyw

ell 5

5-G

A-7

14A

Rol

ls-R

oyce

Tur

bom

eca

RT

M32

2

MT

R 3

90

Engine

m

Figure 9: Specific Power Top 10 Volume

123


Power

0

1000

2000

3000

4000

Sch

rick

SR

350i

AR

741-

1101

MyT

6"

Mar

tin A

ircra

ft V

4 en

gine

Arr

ius

2B2

MT

R 3

90

GE

T70

0-71

0D

Rol

ls-R

oyce

Tur

bom

eca

RT

M32

2 MyT

14"

Hon

eyw

ell 5

5-G

A-7

14A

Engine

kW

Figure 10: Specific Power Top 10 Power

Torque

0

1500

3000

4500

6000

V4

(2-

stro

ke)

MyT

14"

Sch

rick

SR

350i

AR

741-

1101

MyT

6"

Arr

ius

2B2

MT

R 3

90

GE

T70

0-71

0D

RT

M32

2-01

/9A

Hon

eyw

ell 5

5-G

A-7

14A

Engine

Nm

Figure 11: Specific Power Top 10 Torque

From the four graphs above, a visual inspection reveals that the MyT engine is small, light, and powerful and has an enormous amount of torque. It weighs about the least and occupies about the least space in the engine bay yet is only out powered by the Honeywell 55 GA-714A used in large helicopters. Although, only one of the aircraft engines had any torque figures listed in the OEM product specification literature or websites, the claim of ~5000Nm for the MyT engines rather substantial. Thus the MyT engine may be a suitable power pack candidate for

future aircraft both occupied and remotely piloted as well as the full range of land borne platforms and possibly even a selection of marine vessels.

4.2 Power Density Class

The top 10 engines in terms of power density are listed in table 3 below.

Table 3: Power Density: Top 10 Engines

Ser Engine

Power

Density

(MW / m)

(a) (b) (c) 1 MTU 10V 890 1.306 2 AR741-1101 1.639 3 AR801R 1.823 4 MTR 390 1.915

5Martin Aircraft V4 engine

2.222

6Rolls-Royce Turbomeca RTM322

4.886

7 GE T700-710D 10.399 8 Honeywell 55-GA-714A 10.665 9 MyT 6" 10.878 10 MyT 14" 63.157

Again, all of these engines, except for the MyT engines and the MTU 10V 890 are for aircraft. Also the MyT engines appear to outclass all engines in power density, even the Honeywell engines for the M1 tank and the CH47 helicopter.

The detailed comparisons of these 10 engines across the four criteria are depicted in figures 12 15 below.

124


Dry Weight

0

250

500

750

1000

AR

741-

1101

MyT

6"

AR

801R

Mar

tin A

ircra

ft V

4 en

gine

MyT

14"

MT

R 3

90

GE

T70

0-71

0D

Rol

ls-R

oyce

Tur

bom

eca

RT

M32

2

Hon

eyw

ell 5

5-G

A-7

14A

MT

U 1

0V 8

90

Engine

kg

Figure 12: Power Density Top 10 Weight


0.0

0.2

0.4

0.6

0.8

MyT

6"

AR

741-

1101

AR

801R

MyT

14"

Mar

tin A

ircra

ft V

4 en

gine

GE

T70

0-71

0D

Hon

eyw

ell 5

5-G

A-7

14A

Rol

ls-R

oyce

Tur

bom

eca

RT

M32

2

MT

R 3

90

MT

U 1

0V 8

90

Engine

m

Figure 13: Power Density Top 10 Volume

Power

0

1000

2000

3000

4000

AR

741-

1101

AR

801R

MyT

6"

Mar

tin A

ircra

ft V

4 en

gine

MT

U 1

0V 8

90

MT

R 3

90

GE

T70

0-71

0D

Rol

ls-R

oyce

Tur

bom

eca

RT

M32

2 MyT

14"

Hon

eyw

ell 5

5-G

A-7

14A

Engine

kW

Figure 14: Power Density Top 10 Power

Torque

0

1500

3000

4500

6000V

4 (2

- st

roke

)

MT

U 1

0V 8

90

MyT

14"

AR

741-

1101

AR

801R

MyT

6"

MT

R 3

90

GE

T70

0-71

0D

RT

M32

2-01

/9A

Hon

eyw

ell 5

5-G

A-7

14A

Engine

Nm

Figure 15: Power Density Top 10 Torque

From the four graphs above a visual inspection reveals that the MTU 10V 890 is the largest and heaviest of the top ten. And although is it considered a modern engine it still lags the 14 MyT engine by a significant margin; which as almost twice the torque and twice the power for about a 10th of the weight and about a 20th of the gross volume. Again, it appears that the MyT engine may be a suitable power pack candidate for future aircraft both occupied and remotely piloted as well as the full range of land borne platforms and possibly even a selection of marine vessels.

125


4.3 Other Classes

Considering two other classes in which the MyT engine can be categorised, namely size and weight, it is clearly evident from the data in figures 2 7 that the MyT engine may be a suitable power pack candidate for other military platforms. These include but are not limited to future plant and equipment such as generators, pumps and air-conditioner units.

5. Potential Benefits

Should the ADF take up the MyT engine once it matures to a suitable TRL, then there are a number of benefits which may accrue and be realised.

It would simultaneously enable the competing demands of protection and mobility of modern combat vehicles to be met without detriment to either factor. The weight and space savings could enable additional stores for extended range, greater firepower or any situationally or tactically optimised combination. Possibly even the carriage of additional troops and/or equipment.

Furthermore, the better fuel economy [27],improved RAM, and fleet commonality would contribute directly to a reduction of the logistic support footprint and the demands on the supply chain. This then translates into a reduction in the overall risk profile of an operation as there is less demand for logistic support personnel to be either in or transiting through the contested combat areas.

The MyT engine provides a means for the ADF to move towards a single engine type for all of its land vehicles, plant and equipment. Aircraft OEMs have the opportunity to offer platforms in current form factors with greatly enhanced characteristics such as transit range and speed, time on station, pursuit speed or payload. Even if it was just confined to the

manned vehicle fleets the expected payoffs would be substantial.

6. Potential Applications

The range of potential applications for the MyT engine is extensive. From a cursory analysis it could be used in maritime vessels up to and including Armadale class patrol boats; air-cushion vehicles both for the propulsion and for the generation and maintenance of the air-cushion, helicopters; all types of ground vehicles; jet packs-both manned and unmanned, and other aircraft-for example self-powered remotely-piloted air cargo pallets; plant and equipment such as generators, pumps, air-conditioner units and ground servicing equipment and emergency control and support equipment.

In terms of using the MyT engine in ground vehicles, the characteristics of it open up many new possibilities. Examples are powered bogies for both road trains and railway cars. Fundamental redesign of power trains is possible because of the small sized of the MyT engine. This could lead to faster, lighter, and more powerful yet still air transportable ground mobility vehicles with greater payloads, endurance and/or protection

A miniaturised form factor opens up many possibilities. It could be considered a better replacement for dental drills and other air tools. Micro / nano / pico UAVs could be powered with user refillable compressed air containers thus greatly reducing their entire emissive signatures. Powered hand tools would also benefit from the use of the MyT engine in various small form factors.

It is expected that the efforts required to develop large scale variants of the MyT engine would also be worth the cost. This would then give scope for it to be used in large ocean going vessels. Also it could be used for large electrical generation plants in remote localities which do not have access to a suitable electricity grid. This could be

126


in either the driving or driven modes of operation, with hydrothermal energy being the power source in the second case.

Where-ever there in an internal combustion engine, pump, compressor or air powered motor currently in use there is scope for a more powerful, smaller, lighter and more efficient option to be employed using the MyT engine design. Even current hybrid systems would stand to benefit of such advances as may be realised by the MyT engine. Much more work remains to be done, to ratify the initial claims, then bring this new engine design to maturity and finally to market itlegally. [28]

7. Conclusion

The MyT clearly outperforms and outclasses all of the COTS/MOTS power packs considered. The 14 MyT engine weighing 68 kg, occupying 0.035 m and with a claimed output of 2238 kW has a minimum specific power of 32.91 kW/kg and a power density of 63.156 MW/m.[29]

The levels specific power and power density for internal-combustion piston engines within the current ADF inventory are clearly sub-par in comparison to the MyT engine. Notwithstanding any other benefits, there is no valid or logical justification for the ADO to ignore the MyT engine any longer. As a matter of priority the MyT engine needs to be investigated and the claims ratified so that its output characteristics and general dimensions may be the default essential specifications for power packs across multiple platforms in either block upgrades or initial acquisitions. The Australian Defence Industry has a brilliant opportunity to pre-empt the ADF in the uptake of this technological break-through to the mutual benefit.

8. Annex

A. Quinns Quilt [30]

9. References

Bender, A., L400 S&T Support, DSTO Internal Presentation, 30 Jul 2012

http://americas.cosworth.com/defense/lightweight-heavy-fuel-engines/

http://en.wikipedia.org/wiki/Napier Lion

http://en.wikipedia.org/wiki/Napier Sabre

http://en.wikipedia.org/wiki/Turbomeca_Arrius

http://martinjetpack.com/technical-information/v4-engine.aspx

http://pesn.com/2010/04/08/9501634_MYT_Engine_6-inch_version_could_go_into_production_soon/

http://pesn.com/2011/04/23/9501814_Russian_firm_claims_MYT_engine_design_its_own/

http://pesn.com/2011/05/20/9501830_MYT-6_Engine_Signed_for_Strategic_Commercialization/

http://www.4btswaps.com/forum/showthread.php?7348-Isuzu-4BD1T-Introduction.

http://www.angellabsllc.com/2006-02-13%20LA%20Auto_photo.html

127


http://www.angellabsllc.com/2006-02-13%20Sema%20Show_photo.html

http://www.angellabsllc.com/AirMotoringResearch.html

http://www.angellabsllc.com/news_nasa.html

http://www.angellabsllc.com/news2.html

http://www.angellabsllc.com/specs.html

http://www.angellabsllc.com/specs.html

http://www.angellabsllc.com/video/animation.xls

http://www.csiro.au/science/TiRO

http://www.deltahawkengines.com/econom00.shtml, et al

http://www.deltahawkengines.com/object00.shtml

http://www.fairbanksmorse.com/engines/engine_fm_alco_251.php

http://www.geaviation.com/engines/military/t700/t700-701d.html

http://www.internationalpowerstroke.com/67psd.html

http://www.mtu-online.com/mtu/products/engine-program/diesel-engines-for-wheeled-and-tracked-armored-vehicles/engines-for-light-and-medium-weight-vehicles/detail/product/975/cHash/fd3c89d1beb26a6e0724d108e2296c63/?L=pmhwhvenqzrqht

http://www.perkins.com/cda/files/2484142/7/1206E-E70TTA+IOPU+PN1962.pdf

http://www.perkins.com/cda/files/285876/7/1103A-33G+ElectropaK+PN1780.pdf

http://www.perkins.com/cda/files/285897/7/1103C-33+Engine+PN1700.pdf

http://www.rolls-royce.com/Images/MTR390_tcm92-6709.pdf

http://www.rtbot.net/Mercedes-Benz_OM612_engine

http://www.steyr-motors.com/automotive/engines/diesel-engine-6-cylinder-3200-cm3-m16/

http://www.whnet.com/4x4/pix/OM642.pdf

https://acc.dau.mil/adl/en-US/25811/file/3206/TRL%20Calc%202_2.zip

https://acc.dau.mil/CommunityBrowser.aspx?id=25811

https://en.wikipedia.org/wiki/Ford_Power_Stroke_engine

OEM Product Brochure - No.3, Seatek Marine (medium boat) applications, diesel

OEM Product Brochure CAT 6757877, 2006

OEM Product Brochure CAT C18 Military Diesel Engine, 2011

OEM Product Brochure CAT C4.4 Military Diesel Engine

OEM Product Brochure CAT C6.6 Military Diesel Engine

OEM Product Brochure CAT C9 Military Diesel Engine, 2011

OEM Product Brochure CAT Industrial Engine Ratings Guide, page 19, LECH3874-11 (2-11)

128


OEM Product Brochure CAT LEHT9326 (8-99)

OEM Product Brochure Cummins Bulletin 4087195, Aug 2011

OEM Product Brochure Cummins Bulletin 4951351, UK, 7/10



OEM Product Brochure Cummins Bulletin 4971323, July 2010

OEM Product Brochure Detroit 3SA402 0010, 2000

OEM Product Brochure HATZ Deisel L Series, 5/569 ENG - 02.08 - 1

OEM Product Brochure Honeywell: PA00-2613, May 2000

OEM Product Brochure Honeywell: PA02-2993B, April 2002

OEM Product Brochure Jabiru, 3300 Aero Engine

OEM Product Brochure LEDT7014-01, 2007

OEM Product Brochure Mack: A Sales Engineering Publication, ENG139 1001519_9B 04/04/2008

OEM Product Brochure MAN D 114.482/E - mu 11092

OEM Product Brochure MAN D 114.483/E - mu 11092

OEM Product Brochure MAN, D114567/E

OEM Product Brochure Marine Diesel: Marine (medium boat) applications, diesel

OEM Product Brochure MTU 3230991, 2/10, VMD 2010-09




OEM Product Brochure - MTU Friedrichshafen GmbH brochure, www.mtu-online.com

OEM Product Brochure MTU Marine Diesel Engines 12V/16V 2000 M70 for Vessels with High Load Factors (1B)

OEM Product Brochure Schrick: diesel/Kerosene for UAVs

OEM Product Brochure Schrick: lightweight gasoline engine for UAVs

OEM Product Brochure Steyr Motors: 25kW Diesel Electric Generator, August 2011

OEM Product Brochure Steyr Motors: MONOBLOCK DIESEL, [Marine engine series - SE 6 cylinder]

OEM Product Brochure Steyr Motors: STEYR MONOBLOCK DIESEL - FOR HEAVY DUTY DEMANDS

OEM Product Brochure UAV Engines Ltd: AR741 - 38 bhp

OEM Product Brochure UAV Engines Ltd: AR801 - 51 bhp

OEM Product Brochure VCOMB 0636 May 2009

129


OEM Product Brochure VOLVO PENTA, 47701285

OEM Product Brochure Yanmar Service Manual, Industrial Diesel Engine, Model: LA Series

Taleb N. N., The Black Swan: Second Edition: The Impact of the Highly Improbable, Random House, USA, 2010

US Patent 7438044 B2

US Patent: 6,739,307 B2

http://www.marinediesel.se

http://www.schrick.com

http://www.seatek-spa.com

130


10. Annex A

Figure A-1: Quinns Quilt [31]

131


11. Endnotes

1 http://www.angellabsllc.com/ 2 http://www.angellabsllc.com/specs.html 3 Taleb, 2010 4 Bender, 2012 5 http://www.angellabsllc.com/news_nasa.html 6 http://www.angellabsllc.com/2006-02-13%20Sema%20Show_photo.html 7 http://www.angellabsllc.com/2006-02-13%20LA%20Auto_photo.html 8 http://www.angellabsllc.com/ 9 http://pesn.com/2010/04/08/9501634_MYT_Engine_6-inch_version_could_go_into_production_soon/ 10 US Patent: 6,739,307 B2 11 http://www.angellabsllc.com/ 12 US Patent: 6,739,307 B2 13 http://www.angellabsllc.com/ 14 US Patent: 6,739,307 B2 15 http://www.angellabsllc.com/ 16 http://www.angellabsllc.com/video/animation.xls 17 US Patent: 6,739,307 B2 18 http://www.angellabsllc.com/ 19 http://www.angellabsllc.com/news2.html 20 US Patent: 6,739,307 B2 21 http://www.angellabsllc.com/ 22 http://www.angellabsllc.com/AirMotoringResearch.html 23 http://www.angellabsllc.com/specs.html 24 https://acc.dau.mil/CommunityBrowser.aspx?id=25811 25 https://acc.dau.mil/adl/en-US/25811/file/3206/TRL%20Calc%202_2.zip 26 http://www.csiro.au/science/TiRO 27 http://www.angellabsllc.com/news2.html 28 http://pesn.com/2011/04/23/9501814_Russian_firm_claims_MYT_engine_design_its_own/ 29 http://www.angellabsllc.com/specs.html 30 Bender ibid 31 Bender ibid

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Conference PapersModel-based Nonlinear Digital Pulse Processing Electronics Brendan Allman, Paul Scoullar, and Chris McLean

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Documents

MYT Engine Comparative Analysis 2012