Sidecar airplane?

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Riggerrob

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A whimsical challenge to design an airplane with a motorcycle sidecar.
In keeping with the motorcycle theme, it would start out like a Volksplane 2 or 2D, open-profile fuselage plane, but add a sidecar for a passenger. Perhaps the "sidecar" would be a full, aerodynamic "egg" as test-flown on a Stuka or proposed for Harrier and AH-64 Apache helicopter. Despite all the fancy "diploma engineering" when Israelis and Brits needed to evacuate casualties, they just sat casualties on stub wings and wrapped a seat-belt around them. Then they hopped a kilometer or two until they could land the attack helicopter beside an ambulance. Since it only needs to carry one passenger, the "sidecar" will probably be asymmetrical.

Back in 1919, Blackburn did build a prototype "Sidecar" but it was symmetrical in configuration. The only unusual part was the very deep fuselage, so deep that the main wheel axle and wing bracing wires were bolted to the bottom of the keel.

Please allow your imaginations to run wild!
 
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patrickrio

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Yes. and since you are the pilot, it can only be for passengers.

Make sure to call it a "pod" at all times when strapping passenger in.

Then when in flight have an automated recording that says "Pod drop in 10 seconds. 10....9.........."
 

cluttonfred

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Well, you could make the sidecar serve as the fuselage itself.

B.A.T. F.K. 28 Crow (by Frederick Koolhaven)
1622237362197.png

Ramsey Flying Bathtub (modern reproduction)
1622237540797.png

After that there are the designs for passenger-carrying nacelles on or under the wings!
 

patrickrio

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Yes please. She will be much more compliant after vomiting up her last 3 meals due to wing flex.
 

Appowner

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You mean like a smaller version of this B-17 with its mother in law cabin?
I have to wonder what the purpose of that contraption is? It appears to have a sort of radome on it and another one on the tail. An early form of Sub Chaser perhaps?
 

Daleandee

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Well ... you could make it like a trailer that you pull behind you on a rope. When it came time to land you could disconnect it and the passenger could land it themselves. Could use something like a Pawnee to tow it with and ... oh wait!!! 🤗
 

Tiger Tim

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On a (marginally) more serious note, I once suggested to someone who wanted a two-seat Affordaplane-style light flier that the structurally simplest answer may be to make a 2-D fuselage that’s a warren truss from firewall to fin post and just hang a seat off either side like saddle bags. If you were really nuts you could scale the thing up and add a second row of saddle bag seats... or a third row! Imagine a 50mph floater the size of a Cessna 170 or a Beaver!
 

Riggerrob

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On a (marginally) more serious note, I once suggested to someone who wanted a two-seat Affordaplane-style light flier that the structurally simplest answer may be to make a 2-D fuselage that’s a warren truss from firewall to fin post and just hang a seat off either side like saddle bags. If you were really nuts you could scale the thing up and add a second row of saddle bag seats... or a third row! Imagine a 50mph floater the size of a Cessna 170 or a Beaver!
Now Tiger Tim is applying some independent thinking!
Hah!
Hah!
 

Riggerrob

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You mean like a smaller version of this B-17 with its mother in law cabin?
That experimental wing-tip crew pod was originally proposed for a gun turret. Apparently, extra crew members enjoyed riding in it and drew lots for the "fun" seat."
A few years later (Cold War) , the concept was revived for a proposed nuclear-powered, long-range, jet bomber. They hoped that distance squared would be enough to protect pilots from radiation emitted from a nuclear reactor mounted in the opposite wing tip. The USAF did test fly a bomber (modified B-36), but never actually powered engines with nuclear power.
 

Riggerrob

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Lets see...

Nonsymmetric drag for thing.

Then would that throw the lateral balance off causing it to roll?
If wings were only the size of Volksplane 2, you would need to extend the center-section towards the "sidecar."
The larger than wing span, the less important lateral balance becomes. In an extreme case, hanging a single sidecar under an airplane the size of a Douglas Skyraider (50 foot wingspan and 18,000 pound gross weight) "might" require a little aileron trim.
 

Riggerrob

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Prone position in a streamlined pod, strapped to the underside of the wing like a missile :) For best effect, make the entire pod transparent.
The USAAF did experiment with modified drop tanks suspended from (bomb racks) under the wing roots of P-38 Lightnings. Only the nose was made of transparent Plexiglass. It hinged to the side for entry. Plexiglass was only 1/10 the length of "sidecar" similar to the nose on Mosquito bombers.
 

Riggerrob

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On a (marginally) more serious note, I once suggested to someone who wanted a two-seat Affordaplane-style light flier that the structurally simplest answer may be to make a 2-D fuselage that’s a warren truss from firewall to fin post and just hang a seat off either side like saddle bags. If you were really nuts you could scale the thing up and add a second row of saddle bag seats... or a third row! Imagine a 50mph floater the size of a Cessna 170 or a Beaver!
You are reminding us of Carl Bergy's Breezy. I did 4 parachute jumps from a Breezy, during an EAA Fly-In at Stanley, Nova Scotia. That seat really does shrink by 1 inch per thousand feet of altitude!
Hah!
Hah!
Chances are, your proposal would be so light that it would be flown more like a KR-2 with a pair of skinny pilots or a single 95 th percentile pilot. The larger pilot puts a foot on each outboard rudder pedal.
 

Tiger Tim

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You are reminding us of Carl Bergy's Breezy... That seat really does shrink by 1 inch per thousand feet of altitude!
I really want to fly a Breezy to experience that for myself.

Chances are, your proposal would be so light that it would be flown more like a KR-2 with a pair of skinny pilots or a single 95 th percentile pilot. The larger pilot puts a foot on each outboard rudder pedal.
That’s actually a big strike against Ol’ Saddlebags: the pilot(s) can’t really cross the centre line because there’s structure in the way. The good news is if you put the seats on some sort of clip-in rail system you could also have provision to hang your passenger backwards. Not sure why you’d want to (photography? Spotter? Thrill ride? Coyote gunner?) but you could.
 

Tiger Tim

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Bomb rack & strike a Super Man pose

Wipe the bugs off your teeth before the smile:popcorn:
Here’s a more elegant(?) version of exactly that:
 
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