Saunders Roe Jet Propelled Flying Boat, Project 16.7.43

[Justo Miranda]

Saunders Roe Jet Propelled Flying Boat, Project 16.7.43

 

[airman]

Could be early project of SR A/1 ?

 

[Justo Miranda]

Could be early project of SR A/1 ?

Evolution here

 

[airman]

Could be early project of SR A/1 ?

Evolution here

then i was right

 

[steelpillow]

Could be early project of SR A/1 ?

Evolution here

Is there any more information about the MAEE proposal; they did not normally design aircraft, why this one? Why tailless? Who initiated the whole jet flying boat thing ca.1943; MAEE or Saro or a third party? Was it put to anybody else besides Saro?

 

[TsrJoe]

MAEE. Helensburgh, jet flying boat fighter proposal, 1943 (noted to be based upon Gloster 'Whittle') tested at Denny Wavetank

 

[TsrJoe]

Airspeed proposed a similar small jet flying boat, 1943

 

[Hood]

MAEE. Helensburgh, jet flying boat fighter proposal, 1943 (noted to be based upon Gloster 'Whittle') tested at Denny Wavetank

It's not hard to discern some elements of the eventual SR A/1 in that design, though the armament layout surely leaves a lot to be desired!

 

[Schneiderman]

Could be early project of SR A/1 ?

Evolution here

Is there any more information about the MAEE proposal; they did not normally design aircraft, why this one?

I can't answer the why but it is interesting that the RAE were also engaged in advanced conceptual designs around this time. A canard twin-jet, swept wing bomber was one such suggestion.

 

[riggerrob]

Could be early project of SR A/1 ?

Evolution here

Is there any more information about the MAEE proposal; they did not normally design aircraft, why this one?

I can't answer the why but it is interesting that the RAE were also engaged in advanced conceptual designs around this time. A canard twin-jet, swept wing bomber was one such suggestion.

View attachment 687035

At first glance, I did not even notice the canard.
This "eyeball engineer" suggests that the center-of-gravity is too far aft for decent pitch stability. Curtiss Ascender and the Japanese Shinden suffered the same stability problems.

 

[steelpillow]

This "eyeball engineer" suggests that the center-of-gravity is too far aft for decent pitch stability. Curtiss Ascender and the Japanese Shinden suffered the same stability problems.

CG is no problem if other things are right. Yaw stability is the usual problem. The first safe canard, the ASL Valkyrie, flew around 1910 and there have been many since. Some swept wings similar to these have neither tailplane nor canard and fly perfectly well.
What matters are the detailed aerodynamic characteristics. The Ascender had an all-flying canard which was supposed to self-adjust to offer the optimum control authority. Turned out that stability got sacrificed. Not sure about the Shinden, it flew OK but only a few times; the war seems to have ended too soon to evaluate it properly. Certainly, almost everything you will read about these planes is biased by either the canards-are-the-best or the canards-are-the-worst fanatics.